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b3c5e9e3-453c-4d70-aefd-d1abe6d3f39e | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A crystalline hydrated salt on being rendered anhydrous, loses 45.6% of its weight. The percentage composition of anhydrous salt is: Al =10.5%, K =15.1%, S = 24.8% and O = 49.6%. Find the empirical formula of the anhydrous and crystalline salt. | The empirical formula of anhydrous salt would come out to be [LATEX:\text{KAlS}_2O_8] and that of crystalline salt would be [LATEX:\text{KAlS}_2O_8\cdot12H_2O] . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "b9691b7a-dcdb-45de-8489-ee895cf92add", "scraped_at": "2026-04-11T09:55:12.646761+00:00", "question": {"text": "A crystalline hydrated salt on being rendered anhydrous, loses 45.6% of its weight. The percentage composition of anhydrous salt is: Al ... |
74d5c87e-4d90-43e1-9685-75cd16ea2fe4 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | How much quantity of zinc will have to be reacted with excess of dilute HCl solution to produce sufficient hydrogen gas for completely reacting with the oxygen obtained by decomposing 5.104 g of potassium chlorate? | 7.8 gram of zinc would be required . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "4206ad3e-e094-45cf-a868-2654060ef20b", "scraped_at": "2026-04-11T09:55:13.330656+00:00", "question": {"text": "How much quantity of zinc will have to be reacted with excess of dilute HCl solution to produce sufficient hydrogen gas for completely r... |
4904edc4-dda9-4e33-982b-54505fe15fca | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A 1.85 g sample of mixture of [LATEX:\mathrm{CuCl}_{2} \text { and } \mathrm{CuBr}_{2}] was dissolved in water and mixed thoroughly with 1.8 g portion of AgCl. After reaction, the solid which now contain AgCl and AgBr was filtered, dried and weighed to be 2.052 g. What was the % by weight of [LATEX:\mathrm{CuBr}_{2}] i... | The percentage of [LATEX:\text{CuBr}_2] will be 34.18% . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "3c0749a5-bc8f-4a05-a9f1-755af71c420d", "scraped_at": "2026-04-11T09:55:14.049703+00:00", "question": {"text": "A 1.85 g sample of mixture of [LATEX:\\mathrm{CuCl}_{2} \\text { and } \\mathrm{CuBr}_{2}] was dissolved in water and mixed thoroughly w... |
41a07b76-a64b-4aef-8980-20437cb3139e | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | 1.0 g of a sample containing NaCl, KCl and some inert impurity is dissolved in excess of water and treated with excess of [LATEX:\mathrm{AgNO}_{3}] solution. A 2.0 g precipitate of AgCl separate out. Also sample is 23% by mass in sodium. Determine mass percentage of KCl in the sample. | The mass % of KCl is 29.28% in the sample. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "bf76eb98-0079-401b-bcdb-e573bb14c404", "scraped_at": "2026-04-11T09:55:14.752546+00:00", "question": {"text": "1.0 g of a sample containing NaCl, KCl and some inert impurity is dissolved in excess of water and treated with excess of [LATEX:\\mathr... |
916abff9-d3ab-4c59-a966-3b782e285e9c | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A one gram sample containing [LATEX:\mathrm{CaBr}_{2}] , NaCl and some inert impurity was dissolved in enough water and treated with excess of aqueous silver nitrate solution where a mixed precipitate of AgCl and AgBr weighing 1.94 g was obtained. Precipitate was washed, dried and shaken with an aqueous solution of NaB... | The mass % of NaCl is 60.47% and that of [LATEX:\text{CaBr}_2] is 24.3%. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "d1427bef-e872-4454-b80f-33a589127695", "scraped_at": "2026-04-11T09:55:15.468091+00:00", "question": {"text": "A one gram sample containing [LATEX:\\mathrm{CaBr}_{2}] , NaCl and some inert impurity was dissolved in enough water and treated with ex... |
761b6f56-9a1c-4d45-9eab-a8037ec72550 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | Sulphur combines with oxygen to form two oxide [LATEX:\mathrm{SO}_{2} \text { and } \mathrm{SO}_{3}] . If 10 g of S is mixed with 12 g of [LATEX:\text{O}_2] , what mass of [LATEX:\mathrm{SO}_{2} \text { and } \mathrm{SO}_{3}] will be formed, so that neither S nor oxygen will be left at the end of reaction? | Mass of [LATEX:\text{SO}_2] will be 12 gram and that of [LATEX:\text{SO}_3] will be 10 gram. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "4063c257-7415-4b3f-832d-49ac0e784567", "scraped_at": "2026-04-11T09:55:16.135993+00:00", "question": {"text": "Sulphur combines with oxygen to form two oxide [LATEX:\\mathrm{SO}_{2} \\text { and } \\mathrm{SO}_{3}] . If 10 g of S is mixed with 12 ... |
cbb13761-955a-42c3-82f5-d843c639aac8 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | An aqueous solution of ethanol has density 1.025 g/ml and it is 8.0 M. Determine molality (m) of this solution. | Molality of the solution will be = 12.17 m. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "396d12cb-69a0-4ddc-8343-dac753ea7a26", "scraped_at": "2026-04-11T09:55:16.834394+00:00", "question": {"text": "An aqueous solution of ethanol has density 1.025 g/ml and it is 8.0 M. Determine molality (m) of this solution.", "attachment_urls": []}... |
d9e06529-4512-4f0a-a0d3-ea98214b4b7b | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | An aqueous solution of acetic acid has density 1.12 g/mL and it is 5.0 m. Determine molarity (M). | The molarity of the solution is 4.3 M . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "d0adbe6b-212d-477a-a976-28fc9cc4a9b0", "scraped_at": "2026-04-11T09:55:17.505564+00:00", "question": {"text": "An aqueous solution of acetic acid has density 1.12 g/mL and it is 5.0 m. Determine molarity (M).", "attachment_urls": []}, "answers": [... |
4d12e699-6643-4ff6-93e6-4ecbc910b697 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | Octane is a component of gasoline. Incomplete combustion of octane produces some CO along with [LATEX:\mathrm{CO}_{2} \text { and } \mathrm{H}_{2} \mathrm{O}] , which reduces efficiency of engine. In a certain test run, 1.0 gallon of octane is burned and total mass of [LATEX:\mathrm{CO}, \mathrm{CO}_{2} \text { and } \... | The efficiency of engine would be 95.5% | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "5dcdc9f7-9177-4b74-81bc-68a7487d2148", "scraped_at": "2026-04-11T09:55:18.207430+00:00", "question": {"text": "Octane is a component of gasoline. Incomplete combustion of octane produces some CO along with [LATEX:\\mathrm{CO}_{2} \\text { and } \\... |
e6dda413-f9a7-4fa0-979e-e5925e014dc0 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | The formula of a hydrated salt of barium is [LATEX:\mathrm{BaCl}_{2} \cdot x \mathrm{H}_{2} \mathrm{O}] . If 1.936 g of this compound gives 1.846 g of anhydrous [LATEX:\mathrm{BaSO}_{4}] upon treatment with [LATEX:\mathrm{H}_{2} \mathrm{SO}_{4}] , Calculate x. | The value of x will approximately come equal to 2. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "ce4eada0-2f3a-464f-840e-eb14568f0b15", "scraped_at": "2026-04-11T09:55:18.865076+00:00", "question": {"text": "The formula of a hydrated salt of barium is [LATEX:\\mathrm{BaCl}_{2} \\cdot x \\mathrm{H}_{2} \\mathrm{O}] . If 1.936 g of this compoun... |
f1efb528-6503-4fd7-b29e-46d27a9b88bc | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A mixture of [LATEX:\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O} \text { and } \mathrm{MgSO}_{4} \cdot 7 \mathrm{H}_{2} \mathrm{O}] was heated until all the water was driven-off. If 5.0 g of mixture gave 3 g of anhydrous salts, what was the percentage by mass of [LATEX:\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \m... | The mass % of [LATEX:\text{CuSO}_4\cdot5H_2O] will be 74.4%. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "a5687dce-7c73-482e-84b8-d4f0f79f2a72", "scraped_at": "2026-04-11T09:55:19.533897+00:00", "question": {"text": "A mixture of [LATEX:\\mathrm{CuSO}_{4} \\cdot 5 \\mathrm{H}_{2} \\mathrm{O} \\text { and } \\mathrm{MgSO}_{4} \\cdot 7 \\mathrm{H}_{2} \... |
1199a663-0063-4c3e-8202-182a504e5bec | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A sample of clay contain 15% moisture, and rest are [LATEX:\mathrm{CaCO}_{3}] and non-volatile [LATEX:\mathrm{SiO}_{2}] . This on heating loses part of its moisture, but [LATEX:\mathrm{CaCO}_{3}] is completely converted into CaO. The partially dried sample now contain 7.35% moisture and 51.5% SiO2 . Determine mass perc... | The mass % of [LATEX:\text{CaCO}_3] will be 49.97%. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "015eaea6-e7b8-4278-bc5a-745149de0b11", "scraped_at": "2026-04-11T09:55:20.211639+00:00", "question": {"text": "A sample of clay contain 15% moisture, and rest are [LATEX:\\mathrm{CaCO}_{3}] and non-volatile [LATEX:\\mathrm{SiO}_{2}] . This on heat... |
2fbc07d8-71bf-4caa-8cfe-f8708274bdcd | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | Chlorine dioxide ( [LATEX:\mathrm{ClO}_{2}] ), has been used as a disinfectant in air conditioning systems. It reacts with water according to the reaction: [LATEX:\mathrm{ClO}_{2}+\mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{HClO}_{3}+\mathrm{HCl}] . In an experiment, a 10.0 L sealed flask containing [LATEX:\mathr... | The mole fraction of [LATEX:\text{ClO}_2] will be 44.33 . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "f9ed02bf-dbbb-413e-9916-1dcbecf5c5a5", "scraped_at": "2026-04-11T09:55:20.902895+00:00", "question": {"text": "Chlorine dioxide ( [LATEX:\\mathrm{ClO}_{2}] ), has been used as a disinfectant in air conditioning systems. It reacts with water accord... |
32569c2c-d809-4e2b-af87-712d639636c3 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | Potassium salt of benzoic acid ( [LATEX:\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COOK}] )can be made by the action of potassium permanganate on toluene as follows: [LATEX:\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{3}+\mathrm{KMnO}_{4} \longrightarrow \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{COOK}+\mathrm{MnO}_{2}+\mathrm{KOH... | Mass of toluene needed would be 9.31 gram. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "713e0d81-77ad-4940-86f4-3d83b19121b2", "scraped_at": "2026-04-11T09:55:21.529590+00:00", "question": {"text": "Potassium salt of benzoic acid ( [LATEX:\\mathrm{C}_{6} \\mathrm{H}_{5} \\mathrm{COOK}] )can be made by the action of potassium permanga... |
ed37d1fa-4887-4c1b-9b41-7e94564ea31a | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | Manganese trifluoride can be prepared by the following reaction: [LATEX:\mathrm{MnI}_{2}(s)+\mathrm{F}_{2}(g) \longrightarrow \mathrm{MnF}_{3}+\mathrm{IF}_{5}] What is minimum number of grams of [LATEX:\mathrm{F}_{2}] that must be used to react with 12.0 g of [LATEX:\mathrm{MnI}_{2}] if overall yield of [LATEX:\mathrm{... | The minimum grams of [LATEX:\text{F}_2] required is 12.78 grams. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "53bacd73-b21d-4e34-8a53-d8c6cc9625dc", "scraped_at": "2026-04-11T09:55:22.240841+00:00", "question": {"text": "Manganese trifluoride can be prepared by the following reaction: [LATEX:\\mathrm{MnI}_{2}(s)+\\mathrm{F}_{2}(g) \\longrightarrow \\mathr... |
05611b51-39c7-426c-b852-fa790f1b816a | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A compound containing Ca, C, N and S was subjected to quantitative analysis and formula mass determination. A 0.25 g of this compound was mixed with [LATEX:\mathrm{Na}_{2} \mathrm{CO}_{3}] to convert all Ca into 0.16 g [LATEX:\mathrm{CaCO}_{3}] . A 0.115 g sample of compound was carried through a series of reactions un... | Both empirical and molecular formula will be [LATEX:\text{CaC}_2N_2S_2] . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "a6b72fcd-16a3-4545-b242-b6839e111503", "scraped_at": "2026-04-11T09:55:22.950224+00:00", "question": {"text": "A compound containing Ca, C, N and S was subjected to quantitative analysis and formula mass determination. A 0.25 g of this compound wa... |
cc1308b5-4684-48ac-aa24-7d0e68774f9c | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A 0.2 g sample, which is mixture of NaCl, NaBr and NaI was dissolved in water and excess of [LATEX:\mathrm{AgNO}_{3}] was added. The precipitate containing AgCl, AgBr and AgI was filtered, dried and weighed to be 0.412 g. The solid was placed in water and treated with excess of NaBr, which converted all AgCl into AgBr.... | The mass % of NaCl, NaBr and NaI comes out to be 50, 20.23 and 29.77 . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "fe4e7ba5-ad69-4449-a854-166314b48755", "scraped_at": "2026-04-11T09:55:23.625273+00:00", "question": {"text": "A 0.2 g sample, which is mixture of NaCl, NaBr and NaI was dissolved in water and excess of [LATEX:\\mathrm{AgNO}_{3}] was added. The pr... |
f4320304-365f-4c56-a671-cbcaa80a107a | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A mixture of NaI and NaCl when heated with [LATEX:\mathrm{H}_{2} \mathrm{SO}_{4}] produced same weight of [LATEX:\mathrm{Na}_{2} \mathrm{SO}_{4}] as that of original mixture. Calculate mass percentage of NaI in the original mixture. | The mass% of NaI will be 30.25%. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "6a68f52b-e413-41da-9894-9419a32d0807", "scraped_at": "2026-04-11T09:55:24.286234+00:00", "question": {"text": "A mixture of NaI and NaCl when heated with [LATEX:\\mathrm{H}_{2} \\mathrm{SO}_{4}] produced same weight of [LATEX:\\mathrm{Na}_{2} \\ma... |
40ced166-c43e-4781-b093-78b1ec67c4a4 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | Ammonia is manufactured by the reaction of [LATEX:\mathrm{N}_{2}] and [LATEX:\mathrm{H}_{2}] . An equilibrium mixture contains 5.0 g of each , [LATEX:\mathrm{H}_{2}] and [LATEX:\mathrm{NH}_{3}] . Calculate mass of [LATEX:\mathrm{N}_{2}] and [LATEX:\mathrm{H}_{2}] present initially and maximum amount of [LATEX:\text{NH}... | The maximum amount of [LATEX:\text{NH}_3] produced could be 11.135 gram. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "50beef9d-cdcb-4d6e-ba1f-59d98d0f77aa", "scraped_at": "2026-04-11T09:55:25.014081+00:00", "question": {"text": "Ammonia is manufactured by the reaction of [LATEX:\\mathrm{N}_{2}] and [LATEX:\\mathrm{H}_{2}] . An equilibrium mixture contains 5.0 g o... |
fe8ed4af-095d-4305-b364-93faa9382a50 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | Consider the following reactions: [LATEX:\mathrm{XeF}_{2}+\mathrm{F}_{2} \longrightarrow \mathrm{XeF}_{6}] and [LATEX:\mathrm{XeF}_{6}+-\left(\mathrm{CH}_{2}-\mathrm{CH}_{2}\right)_{n} \longrightarrow+\left(\mathrm{CF}_{2}-\mathrm{CF}_{2}\right)_{n}+\mathrm{HF}+\mathrm{XeF}_{4}] Determine mass of [LATEX:\mathrm{F}_{2}(... | Therefore, mass of [LATEX:F_2] required for 1 kg of fluorinated polymer would be 3.04 kg . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "ac406155-2d85-4225-92a0-284d12a1a9f5", "scraped_at": "2026-04-11T09:55:25.758534+00:00", "question": {"text": "Consider the following reactions: [LATEX:\\mathrm{XeF}_{2}+\\mathrm{F}_{2} \\longrightarrow \\mathrm{XeF}_{6}] and [LATEX:\\mathrm{XeF}_... |
b84022ff-d8d6-49f4-9665-fc6ffb481239 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | 2.5 g of a sample containing [LATEX:\mathrm{Na}_{2} \mathrm{CO}_{3} ; \mathrm{NaHCO}_{3}] and some non-volatile impurity on gentle heating loses 12% of its weight. Residue is dissolved in 100 mL water and its 10 mL portion required 15 mL 0.1 M aqueous solution of BaCl2 for complete precipitation of carbonates. Determin... | Mass % of [LATEX:\text{Na}_2CO_3\text{ in the original sample is 42.4\%}] . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "b2166ea2-4a95-48c9-930f-85e19aae6bd2", "scraped_at": "2026-04-11T09:55:26.409788+00:00", "question": {"text": "2.5 g of a sample containing [LATEX:\\mathrm{Na}_{2} \\mathrm{CO}_{3} ; \\mathrm{NaHCO}_{3}] and some non-volatile impurity on gentle he... |
02f6371f-1a76-472f-83a2-7fb995af5109 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | 2.0 g of a sample containing NaCl, NaBr and some inert impurity is dissolved in enough water and treated with excess of AgNO3 solution. A 3.0 g of precipitate was formed. Precipitate on shaking with aqueous NaBr gain 0.76 g of weight. Determine mass percentage of NaCl in the original sample. | Mass % of NaCl is 50% . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "f76abce6-2443-4b28-8816-a6a9da8e7380", "scraped_at": "2026-04-11T09:55:27.062807+00:00", "question": {"text": "2.0 g of a sample containing NaCl, NaBr and some inert impurity is dissolved in enough water and treated with excess of AgNO3 solution. ... |
c1ae351f-3ed9-4008-8c69-a35535b41d55 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | Based on the following information, determine value of x and y: [LATEX:\begin{array}{ccc} \left(\mathrm{CH}_{3}\right)_{x} \mathrm{AlCl}_{y} & \longrightarrow x \mathrm{CH}_{4}(g)+y \mathrm{Cl}^{-}+\mathrm{Al}^{3+} \frac{\mathrm{AgNO}_{3}}{0.222 \mathrm{~g}} \operatorname{AgCl}(s) \\ 0.643 \mathrm{~g} & 0.996 \mathrm{~... | The value of x comes out to be approx 2 and of y to be 1. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "a2bdfcd2-d9e6-4855-b8c0-bbc5deb7b361", "scraped_at": "2026-04-11T09:55:27.766491+00:00", "question": {"text": "Based on the following information, determine value of x and y: [LATEX:\\begin{array}{ccc} \\left(\\mathrm{CH}_{3}\\right)_{x} \\mathrm{... |
78eb5601-283e-43c9-a5fe-52524f513a04 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | An organic compound containing C, H, O, N and Cl was analyzed and 0.15 g of sampleon combustion produced 0.138 g of [LATEX:\mathrm{CO}_{2}] and 0.0566 g of [LATEX:\mathrm{H}_{2} \mathrm{O}] . All the nitrogen in different 2.0 g sample of compound was converted into [LATEX:\mathrm{NH}_{3}] which was found to weigh 0.238... | The empirical formula of this compound is [LATEX:\text{C}_3H_6NCl_2O] . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "270ec1ec-b5a3-4e9d-b3ff-f599b52161b6", "scraped_at": "2026-04-11T09:55:28.434431+00:00", "question": {"text": "An organic compound containing C, H, O, N and Cl was analyzed and 0.15 g of sampleon combustion produced 0.138 g of [LATEX:\\mathrm{CO}_... |
c8df1b8e-a807-4d85-8c9c-92be9a934cb6 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A 5.0 g sample of felspar containing [LATEX:\mathrm{Na}_{2} \mathrm{O}, \mathrm{K}_{2} \mathrm{O}] and some inert impurity is dissolved in dilute HCl solution and NaCl and KCl formed are separated by fractional crystallization. During crystallization some less soluble impurities also comes out. Mass of NaCl, KCl and im... | Mass % of [LATEX:\text{Na}_2O] is 31.16% and of [LATEX:\text{K}_2O] is 37.34% . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "8cd97241-baff-4cdb-aa9e-0c287b044d8b", "scraped_at": "2026-04-11T09:55:29.115261+00:00", "question": {"text": "A 5.0 g sample of felspar containing [LATEX:\\mathrm{Na}_{2} \\mathrm{O}, \\mathrm{K}_{2} \\mathrm{O}] and some inert impurity is dissol... |
76e4ea4f-0dc2-4dc7-88a5-625b7049edb5 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | Potassium chlorate [LATEX:\left(\mathrm{KClO}_{4}\right)] is made in the following sequence of reactions: [LATEX:\begin{aligned} \mathrm{Cl}_{2}(g)+\mathrm{KOH} & \longrightarrow \mathrm{KCl}+\mathrm{KClO}+\mathrm{H}_{2} \mathrm{O} \\ \mathrm{KClO} \longrightarrow & \mathrm{KCl}+\mathrm{KClO}_{3} \\ \mathrm{KClO}_{3} &... | 2.05 kg of [LATEX:\text{Cl}_2] will be required to produce 1 kg of [LATEX:\text{KClO}_4] . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "d423eeba-d850-4a4a-a137-c0d0044d81e4", "scraped_at": "2026-04-11T09:55:29.810254+00:00", "question": {"text": "Potassium chlorate [LATEX:\\left(\\mathrm{KClO}_{4}\\right)] is made in the following sequence of reactions: [LATEX:\\begin{aligned} \\m... |
bc709c9b-be7d-47be-a984-fdbbc7776a63 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | Titanium oxide (TiO2 ) is heated in stream of hydrogen to give water and a new oxide [LATEX:\mathrm{Ti}_{x} \mathrm{O}_{y} . \text { If } 1.598 \mathrm{~g} \mathrm{TiO}_{2} \text { produces } 1.438 \mathrm{~g} \mathrm{Ti}_{x} \mathrm{O}_{y}] , what is the formula of new oxide ? | The formula of new oxide obtained will be [LATEX:\text{Ti}_2O_3] . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "734b1382-ac5f-4d6c-b70f-0882b7cebf76", "scraped_at": "2026-04-11T09:55:30.462218+00:00", "question": {"text": "Titanium oxide (TiO2 ) is heated in stream of hydrogen to give water and a new oxide [LATEX:\\mathrm{Ti}_{x} \\mathrm{O}_{y} . \\text { ... |
fd1b8d8b-1031-4a36-8083-ce1efb715fe2 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A solution of copper sulphate that contain 15% [LATEX:\mathrm{CuSO}_{4}] by weight has a density of 1.169 g/mL. 25 mL portion of this solution was reacted with excess of ammonia solution to form a dark blue solution. When cooled, filtered and dried, 6.127 g of dark blue solid was obtained. A 0.195g solid was analyzed f... | The formula deduced will be [LATEX:\text{Cu(NH}_3)\cdot SO_4\cdot H_2O] . The percentage yield of crystalline process will be 90.75%. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "4dbf1998-b864-4417-99fb-bdfa79bb4403", "scraped_at": "2026-04-11T09:55:31.172288+00:00", "question": {"text": "A solution of copper sulphate that contain 15% [LATEX:\\mathrm{CuSO}_{4}] by weight has a density of 1.169 g/mL. 25 mL portion of this s... |
20d12258-c652-4b9f-80c8-3b5131ccc1da | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | 0.1152 g of a compound containing carbon, hydrogen, nitrogen and oxygen are burned in oxygen. The gases produced are treated further to convert nitrogen containing product into N2 . The resulting mixture of CO2 , H2O and N2 is passed through a CaCl2 drying tube, which gains 0.09912 g./The gas stream was then bubbled th... | The molecular formula of the starting compound would be [LATEX:\text{C}_6H_{14}N_2O_2] . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "05ca1fba-8fd1-4033-b044-e6e67786329d", "scraped_at": "2026-04-11T09:55:31.919804+00:00", "question": {"text": "0.1152 g of a compound containing carbon, hydrogen, nitrogen and oxygen are burned in oxygen. The gases produced are treated further to ... |
6d87ef09-ec01-4512-baad-7b8d03d473f8 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | [LATEX:\mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2}] and KI reacts in aqueous solution to form an yellow precipitate of [LATEX:\mathrm{PbI}_{2}] . In one series of experiments, the masses of two reactants varied, but the total mass of the two was held constant at 5.0 g. What maximum mass of [LATEX:\mathrm{PbI}_{2}] can ... | Maximum mass of [LATEX:\text{PbI}_2] produced would be 3.464 gram. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "97ce9ef6-542e-4268-8c0f-701056170019", "scraped_at": "2026-04-11T09:55:32.535465+00:00", "question": {"text": "[LATEX:\\mathrm{Pb}\\left(\\mathrm{NO}_{3}\\right)_{2}] and KI reacts in aqueous solution to form an yellow precipitate of [LATEX:\\math... |
0ddd25b7-9d39-48b8-9fc8-d3bd26dd8e67 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | An element X react with hydrogen leading to formation of a class of compounds that is analogous to hydrocarbons. 5 g of X forms 5.628 g of a mixture of two compounds of [LATEX:X, X \mathrm{H}_{4} \text { and } X_{2} \mathrm{H}_{6}] in the molar ratio of 2 : 1. Determine molar mass of X. | The molar mass of X is 27.8 gram. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "226cfabf-c2c0-4aa8-821d-f1f5be2f8090", "scraped_at": "2026-04-11T09:55:33.174008+00:00", "question": {"text": "An element X react with hydrogen leading to formation of a class of compounds that is analogous to hydrocarbons. 5 g of X forms 5.628 g ... |
eadb574d-a283-4f6b-a14f-47797e784a83 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | The mineral Argyrodite is a stoichiometric compound that contain silver, sulphur (– 2) and an unknown element Y (+ 4). The mass-ratio of silver and Y in the compound is, m(Ag) :m(Y ) =11.88Y forms a reddish brown lower sulphide on heating the mineral in stream of [LATEX:\mathrm{H}_{2}(g) \text { , in which } Y] is in +... | Molar mass of Y is 72.6 g/mol and empirical formula of mineral is [LATEX:\text{Ag}_8YS_6] . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "a71f603d-aea0-4270-8edb-96939f8562eb", "scraped_at": "2026-04-11T09:55:33.888171+00:00", "question": {"text": "The mineral Argyrodite is a stoichiometric compound that contain silver, sulphur (\u2013 2) and an unknown element Y (+ 4). The mass-rat... |
09edb71f-858b-4dab-a45b-029653534b5d | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | Uranium is isolated from its ore by dissolving it as [LATEX:\mathrm{UO}_{2}\left(\mathrm{NO}_{3}\right)_{2}] and separating it as solid [LATEX:\mathrm{UO}_{2}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right) \cdot x \mathrm{H}_{2} \mathrm{O}] . A 1.0 g sample of ore on treatment with nitric acid yielded 1.48 g [LATEX:\mathrm{... | The weight % of uranium sample is 89.4% and x= 3. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "ae841c2a-3854-4214-9156-6e80950c01da", "scraped_at": "2026-04-11T09:55:34.583953+00:00", "question": {"text": "Uranium is isolated from its ore by dissolving it as [LATEX:\\mathrm{UO}_{2}\\left(\\mathrm{NO}_{3}\\right)_{2}] and separating it as so... |
609f8ed0-25f7-4852-b858-ac7eccb9b41c | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | When iodine was added to liquid chlorine in cold condition, orange crystal of a compound separate out. The amount of chlorine in a sample of crystal was determined by precipitating AgCl. A 0.467 g sample of crystal gave 0.861 g of AgCl. Deduce empirical formula of the crystal. | Empirical formula of the crystal is [LATEX:\text{ICl}_3] . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "43d1bb41-3088-475b-90c5-77c07f211b74", "scraped_at": "2026-04-11T09:55:35.257874+00:00", "question": {"text": "When iodine was added to liquid chlorine in cold condition, orange crystal of a compound separate out. The amount of chlorine in a sampl... |
82c7a8b7-728b-45b7-a642-62eda43ce0a9 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | Urea is manufactured on large scale by passing [LATEX:\mathrm{CO}_{2}(g)] through ammonia solution followed by crystallization. [LATEX:\mathrm{CO}_{2}] for the above reaction is prepared by combustion of hydrocarbons. If combustion of 236 kg of a saturated hydrocarbon produces as much [LATEX:\mathrm{CO}_{2}] as require... | The molecular formula of the hydrocarbon would be [LATEX:\text{C}_{12}H_{26}] . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "4ed0263c-8f9b-417b-8a2b-f339b0e84da9", "scraped_at": "2026-04-11T09:55:35.900515+00:00", "question": {"text": "Urea is manufactured on large scale by passing [LATEX:\\mathrm{CO}_{2}(g)] through ammonia solution followed by crystallization. [LATEX:... |
f834a3f3-69a4-4b9d-8009-024cd03a3a16 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | mcq | Sodium bicarbonate can be purified by dissolving it in hot water (at 60°C), filtering to remove insoluble impurities, cooling to 0°C to precipitate solid [LATEX:\mathrm{NaHCO}_{3}] and the filtering to remove the solid leaving soluble impurities in solution. Some NaHCO3 that remain in solution is not recovered. The sol... | The percentage purity of pure sample comes out to be 79.16% . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "a120fe92-2090-44ad-bba8-d15b5e8cdef3", "scraped_at": "2026-04-11T09:55:36.536285+00:00", "question": {"text": "Sodium bicarbonate can be purified by dissolving it in hot water (at 60\u00b0C), filtering to remove insoluble impurities, cooling to 0\... |
f9417a13-d5c2-4ef6-a343-75610917713e | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A 100 g solution was prepared by dissolving [LATEX:46 \mathrm{~g} \mathrm{CuSO}_{4} \cdot \mathrm{x} \mathrm{H}_{2} \mathrm{O} \text { in } 54 \mathrm{~g}] of water and mole fraction of [LATEX:\mathrm{CuSO}_{4}] in solution was found to be 0.05. Determine x. | The value of 'x' is 4. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "6c28378c-cb73-487a-9049-b833ef7806bf", "scraped_at": "2026-04-11T09:55:37.236195+00:00", "question": {"text": "A 100 g solution was prepared by dissolving [LATEX:46 \\mathrm{~g} \\mathrm{CuSO}_{4} \\cdot \\mathrm{x} \\mathrm{H}_{2} \\mathrm{O} \\t... |
16c8b64d-d63b-4eb1-b9a2-4c5c4173da74 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | An ore of iron contain FeS and non-volatile impurity. Roasting of this ore converts all FeS into [LATEX:\mathrm{Fe}_{2} \mathrm{O}_{3}] and a 4% loss in weight was observed. Determine mass percentage of FeS in ore. | The mass % of FeS in ore is 44% . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "a05ed946-8c5c-4d96-9c06-075709f657bc", "scraped_at": "2026-04-11T09:55:38.509430+00:00", "question": {"text": "An ore of iron contain FeS and non-volatile impurity. Roasting of this ore converts all FeS into [LATEX:\\mathrm{Fe}_{2} \\mathrm{O}_{3}... |
f5b09a12-7888-47bb-8b5c-ae143ea2fe0c | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | Optical measurement is a very efficient method of determining molar mass of unknown material. In one experiment, 3.0 g of an unknown polymeric material was dissolved in 100 mL of [LATEX:\mathrm{CCl}_{4}] and transmittance of this solution was found to be 72%. Transmittance of a 0.001Mstandard solution in the same solve... | The molar mass of unknown polymer would be 42857 u. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "bffa1afb-cb20-4172-8353-dce9c2510ede", "scraped_at": "2026-04-11T09:55:39.186229+00:00", "question": {"text": "Optical measurement is a very efficient method of determining molar mass of unknown material. In one experiment, 3.0 g of an unknown pol... |
3313f527-b0aa-41cf-a841-68d24a987841 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A crystalline polymer molecule is uniform prismatic in shape with dimensions as shown below,If density of this polymer is 1.2 g/cm [LATEX:^{-3}] , determine molar mass. | The molar mass of this polymer is [LATEX:939\times10^3\text{ amu}] . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "9743ec8a-54d7-4b88-a268-9a59fced1fcf", "scraped_at": "2026-04-11T09:55:39.842912+00:00", "question": {"text": "A crystalline polymer molecule is uniform prismatic in shape with dimensions as shown below,If density of this polymer is 1.2 g/cm [LATE... |
45182fea-19f9-4053-9ed2-5501c3c78640 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A mother cell disintegrate into sixty identical cells and each daughter cell further disintegrate into 24 smaller cells. The smallest cells are uniform cylindrical in shape with diameter of 120 Å and each cell is 6000 Å long. Determine molar mass of the mother cell if density of the smallest cell is 1.12 g/cm [LATEX:^3... | The molar cell of the mother cell is [LATEX:6.6\times10^{10}\text{ amu}] . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "67270523-0e84-4233-8596-8145c65a4aad", "scraped_at": "2026-04-11T09:55:40.557159+00:00", "question": {"text": "A mother cell disintegrate into sixty identical cells and each daughter cell further disintegrate into 24 smaller cells. The smallest ce... |
79567bea-5e82-4d2d-b2d4-6221df8a4090 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A sample of rock taken for analysis weigh 1.0 g on air dried basis. After drying for one hour at 110°C, the sample weigh 0.9437 g. The calcium is precipitated as oxalate but weighed as [LATEX:\mathrm{CaSO}_{4}] , that weigh 0.5g. The magnesium is precipitated as MgNH [LATEX:_4] PO [LATEX:4] which finally ignited to [LA... | The final mass % of CaO and MgO on over dried basis is 20.58% and 18%. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "69850efc-92b7-4c99-9649-e5a1dee03a91", "scraped_at": "2026-04-11T09:55:41.245342+00:00", "question": {"text": "A sample of rock taken for analysis weigh 1.0 g on air dried basis. After drying for one hour at 110\u00b0C, the sample weigh 0.9437 g. ... |
cb04847e-62da-4657-94f9-144286dc694e | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A sample is a mixture of Mohr’s salt and [LATEX:\left(\mathrm{NH}_{4}\right)_{2} \mathrm{SO}_{4}] . A 0.5 g sample on treatment with excess of [LATEX:\mathrm{BaCl}_{2}] solution gave 0.75 g [LATEX:\mathrm{BaSO}_{4}] . Determine percentage composition of the salt mixture. What weight of [LATEX:\mathrm{Fe}_{2} \mathrm{O}... | 18.77 mg of [LATEX:\text{Fe}_2O_3] would be obtained if 0.2 g of the sample were ignited in air. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "73ac9fc4-055c-4af0-8cc0-d6d1ad9d0fc7", "scraped_at": "2026-04-11T09:55:41.916275+00:00", "question": {"text": "A sample is a mixture of Mohr\u2019s salt and [LATEX:\\left(\\mathrm{NH}_{4}\\right)_{2} \\mathrm{SO}_{4}] . A 0.5 g sample on treatment... |
47a7593b-5c41-49ee-a02c-4ec244246249 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 1. Mole Concept | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A chloride mixture is prepared by grinding together pure [LATEX:\mathrm{BaCl}_{2} \cdot 2 \mathrm{H}_{2} \mathrm{O}] , KCl and NaCl. What is the smallest and largest volume of 0.15 M Ag [LATEX:\mathrm{NO}_{3}] solution that may be used for complete precipitation of chloride from a 0.3g sample of the mixture which may c... | The smallest and largest volume of [LATEX:\text{AgNO}_3] used for complete precipitation of chloride are 16.38 ml and 34.18 ml . | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "c88df772-1dc0-4aa6-b3bd-7fbcfb763800", "scraped_at": "2026-04-11T09:55:42.624870+00:00", "question": {"text": "A chloride mixture is prepared by grinding together pure [LATEX:\\mathrm{BaCl}_{2} \\cdot 2 \\mathrm{H}_{2} \\mathrm{O}] , KCl and NaCl.... |
56e00cfc-022f-4266-9599-0459cd012448 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 2. Acid -Base Titration | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A 1.5 g sample containing oxalic acid and some inert impurity was dissolved in enough water and volume made up to 250 mL. A 20 mL portion of this solution was then mixed with 30 mL of an alkali solution. The resulting solution was then treated with stoichiometric amount of [LATEX:\mathrm{CaCl}_{2}] just needed for prec... | The mass percentage of oxalic acid in the given sample is [LATEX:82.5] % | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "1657c248-2ecb-418e-9735-f77326c23eb2", "scraped_at": "2026-04-11T09:55:43.277159+00:00", "question": {"text": "A 1.5 g sample containing oxalic acid and some inert impurity was dissolved in enough water and volume made up to 250 mL. A 20 mL portio... |
a2106f40-955c-4577-8062-983a6d30a6df | JEE ADVANCED Reference Books | Class 12 | Chemistry | 2. Acid -Base Titration | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A 1.5 g sample containing [LATEX:\mathrm{P}_{2} \mathrm{O}_{3}] and some inert impurity was dissolved in enough water and boiled gently where [LATEX:\mathrm{P}_{2} \mathrm{O}_{3}] disproportionated quantitatively into PH [LATEX:_3] and H [LATEX:_3] PO [LATEX:_4] . The solution was further boiled for some time to let-of... | The mass percentage of P₂O₃ in the given sample is 79.85 % | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "36daf205-be41-4ed6-976e-dd907d3a7f97", "scraped_at": "2026-04-11T09:55:43.973481+00:00", "question": {"text": "A 1.5 g sample containing [LATEX:\\mathrm{P}_{2} \\mathrm{O}_{3}] and some inert impurity was dissolved in enough water and boiled gentl... |
bbfd45b5-ad19-4a00-8f26-b8d7eefcb124 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 2. Acid -Base Titration | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | 2.5 g of a mixture containing [LATEX:\mathrm{CaCO}_{3}, \mathrm{Ca}\left(\mathrm{HCO}_{3}\right)_{2}] and NaCl was dissolved in 100 mL water and its 10 mL portion required 10 mL 0.05 [LATEX:\mathrm{M} \mathrm{H}_{2} \mathrm{SO}_{4}] solution to reach the phenolphthalein end point. An another 10 mL portion of the same s... | The mass percentage of calcium carbonate and calcium bicarbonate is 40 % and 40 % respectively. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "c9c1a30b-6781-417f-82a8-d5444f7ac001", "scraped_at": "2026-04-11T09:55:44.679771+00:00", "question": {"text": "2.5 g of a mixture containing [LATEX:\\mathrm{CaCO}_{3}, \\mathrm{Ca}\\left(\\mathrm{HCO}_{3}\\right)_{2}] and NaCl was dissolved in 100... |
bfde1045-78d7-421d-996e-2ceb3258dee5 | JEE ADVANCED Reference Books | Class 12 | Chemistry | 2. Acid -Base Titration | 1500 Selected Problems In Chemistry for JEE Main & Advanced | English | subjective | A solution contain both [LATEX:\mathrm{Na}_{2} \mathrm{CO}_{3} \text { and } \mathrm{NaHCO}_{3}] . 10 mL portion of this solution is mixed with few drops of phenolphthalein indicator and titrated against 0.08 MH [LATEX:_2] SO [LATEX:_4] solution. 7.0 mL of acid was required to reach the end point A 5.0 mL portion of th... | The mass of Na₂CO₃ and NaHCO₃ per litre are 11.872 and 6.72 respectively. | {"book_id": "5beedd00-1f47-46da-8345-45349c12deaa", "question_part_id": "c1325abf-e9df-4c27-a69e-f536fff1f307", "scraped_at": "2026-04-11T09:55:45.330396+00:00", "question": {"text": "A solution contain both [LATEX:\\mathrm{Na}_{2} \\mathrm{CO}_{3} \\text { and } \\mathrm{NaHCO}_{3}] . 10 mL portion of this solution is... |
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