datavorous/entrance-exam-dataset huggingface dataset:
Equilibrium constant, \(\mathrm{Kc}\) for the reaction:
\(N 2(g)+3 H 2(g) \rightleftharpoons 2 N H 3(g)\)
at \(500 \mathrm{~K}\) is 0.061 . At a particular time, the analysis shows that the composition of the reaction mixture is 3.0 mol L-1 N2, 2.0 mol L-1 H2 and 0.5 mol L-1 NH3. Is the reaction at equilibrium? if not, in which direction does the reaction tend to proceed to reach equilibrium?

Options:
A The reaction is at equilibrium.
B The reaction is not at equilibrium, it tends to form more \(\mathrm{NH} 3\).
C The reaction is not at equilibrium, it tends to form more \(\mathrm{N} 2\) and \(\mathrm{H} 2\).
D The reaction is not at equilibrium, it tends to shift in the reverse direction.

The correct answer is:
The reaction is not at equilibrium, it tends to form more \(\mathrm{N} 2\) and \(\mathrm{H} 2\).

Solution:
Correct Option is : (C)

Topic: Chemistry, Ionic Equilibrium, NEET
Equilibrium constants $\mathrm{K}_1$ and $\mathrm{K}_2$ for the following equilibria:
are related as:

Options:
A $\mathrm{K}_2=1 / \mathrm{K}_1{ }^2$
B $\mathrm{K}_2=\mathrm{K}_1{ }^2$
C $\mathrm{K}_2=1 / \mathrm{K}_1$
D $\mathrm{K}_2=\mathrm{K}_1 / 2$

The correct answer is:
$\mathrm{K}_2=1 / \mathrm{K}_1{ }^2$

Solution:
$$
\mathrm{K}_1=\frac{p_{\mathrm{NO} 2}}{p_{\mathrm{NO}} \cdot\left(\mathrm{p}_{\mathrm{O} 2}\right)^{1 / 2}}
$$
$$
\mathrm{K}_2=\frac{\left(p_{\mathrm{NO}}\right)^2 \cdot p_{\mathrm{O} 2}}{\left(\mathrm{p}_{\mathrm{NO} 2}\right)^2}
$$
takin square root on both sides in eq. 2.
$$
\begin{aligned}
& \Rightarrow \sqrt{\mathrm{K}_2}=\frac{p_{\mathrm{NO}} \cdot\left(p_{\mathrm{O} 2}\right)^{1 / 2}}{p_{\mathrm{NO} 2}} \\
& \Rightarrow \sqrt{\mathrm{K}_2}=\frac{1}{\mathrm{~K}_1} \Rightarrow \mathrm{K}_2=\frac{1}{\mathrm{~K}_1^2}
\end{aligned}
$$

Topic: Chemistry, Chemical Equilibrium, NEET, NEET 2005
Equimolar solutions of HF, HCOOH and HCN at 298 K have the values of Ka as 6.8×10-4,1.8×10-4 and 4.8×10-9 respectively. What will be the order of their acidic strength?

Options:
A HF > HCN > HCOOH
B HF > HCOOH > HCN
C HCN > HF > HCOOH
D HCOOH > HCN > HF

The correct answer is:
HF > HCOOH > HCN

Solution:
Solution which has higher Ka value will have more acidic strength .
So, KaHF6.8×10-4>HCOOH1.8×10-4>HCN4.8×10-9

Topic: Chemistry, Ionic Equilibrium, NEET
Equimolar solutions of the following substances were prepared separately. Which one of these will record the highest $\mathrm{pH}$ value?

Options:
A $\mathrm{BaCl}_2$
B $\mathrm{AlCl}_3$
C $\mathrm{LiCl}$
D $\mathrm{BeCl}_2$

The correct answer is:
$\mathrm{BaCl}_2$

Solution:
$\mathrm{BaCl}_2$ is a salt of strong acid $\mathrm{HCl}$ and strong base $\mathrm{Ba}(\mathrm{OH})_2$. So, its aqueous solution is neutral with $\mathrm{pH} 7$. All other salts give acidic solution due to cationic hydrolysis, so their $\mathrm{pH}$ is less than 7.
Thus, $\mathrm{pH}$ value is highest for the solution of $\mathrm{BaCl}_2$.

Topic: Chemistry, Ionic Equilibrium, NEET, NEET 2012 (Screening)
Equimolar solutions of the following were prepared in water separately. Which one of the solutions will record the highest $\mathrm{pH}$ ?

Options:
A $\mathrm{SrCl}_2$
B $\mathrm{BaCl}_2$
C $\mathrm{MgCl}_2$
D $\mathrm{CaCl}_2$

The correct answer is:
$\mathrm{BaCl}_2$

Solution:
Key Idea : As the basic nature increases, $p H$ increases
$\text {pH of base }>7$
$p H$ of acid $ < 7$
In alkaline earth metals on moving downward the size of cation increases, thus basicity increases. Hence, the increasing order of basicity is as :
$\mathrm{MgCl}_2 < \mathrm{CaCl}_2 < \mathrm{SnCl}_2 < \mathrm{BaCl}_2$
Therefore, the solution of $\mathrm{BaCl}_2$ will record the highest $\mathrm{pH}$.

Topic: Chemistry, Ionic Equilibrium, NEET, NEET 2008 (Screening)
Equistem belongs to class

Options:
A Lycopsida
B Psilopsida
C Sphenopsida
D Pteropsida

The correct answer is:
Sphenopsida

Solution:
Equistem belongs to the class of Sphenopsida of phylum Pteridophyta.

Topic: Biology, Plant Kingdom, NEET
Equivalent capacitance between x and y is

Options:
A 78 C
B 87 C
C 79 C
D 97 C

The correct answer is:
78 C

Solution:
As the circuit has a left-right symmetry, we can disconnect as shown in the figure.

Topic: Physics, Electrostatics, NEET
Equivalent conductance of 0.1 M HA (weak acid) solution is 10 Scm2 equivalent -1 and that at infinite dilution is 200 Scm2 equivalent -1. Hence pH of HA solution is

Options:
A 1.3
B 1.7
C 2.3
D 3.7

The correct answer is:
2.3

Solution:
Î±=ÎÎâ=10200=120
[H + ] weak acid  = Cα
=0.1Ã120=5Ã10-3
pH=3-log5=2.3

Topic: Chemistry, Electrochemistry, NEET
Equivalent mass of KMnO4 in acidic, strongly basic and neutral are in the ratio of

Options:
A 3 : 5 : 15
B 5 : 3 : 1
C 5 : 1 : 3
D 3 : 15 : 5

The correct answer is:
3 : 15 : 5

Solution:
Equivalent mass of KMnO4 in acidic, basic and neutral medium are 31.6, 158 and 52.6. The ratio will be 3 : 15 : 5.
n-factor of KMnO4 in acidic, basic and neutral medium are 5, 1 and 3 respectively.
Acid medium : Basic medium : Neutral medium
Ew=Mw5=1585 : Ew=Mw1=1581=158 : Ew=Mw3=1583
3 : 15 : 5

Topic: Chemistry, Redox Reactions, NEET
Equivalent mass of the reaction C6H5NO2→C6H5NH2 .

Options:
A M6
B M3
C M4
D M2

The correct answer is:
M6

Solution:
C6H5N+3O2→C6H5N-3H2
Change in oxidation Number in the reaction is 6
Eq. weight = M6

Topic: Chemistry, Redox Reactions, NEET
Equivalent resistance between points A & B in the given circuit is

Options:
A R6
B R3
C 2R3
D 5R3

The correct answer is:
R6

Solution:
R6
All the resistances are in parallel and connected between A & B , therefore equivalent circuit is

and equivalent resistance is,
Req=R3×R3R3+R3=R6

Topic: Physics, Current Electricity, NEET
Equivalent weight of crystalline oxalic acid, is

Options:
A 90
B 53
C 63
D 45

The correct answer is:
63

Solution:
Eq. wt of crystalline oxalic acid COOH 2 ⋅2 H 2 O= M.wt 2 = 126 2 =63

Topic: Chemistry, Some Basic Concepts of Chemistry, NEET
Ergot of rye is caused by a species of:

Options:
A Uncinula
B Ustilago
C Claviceps
D Phytophthora.

The correct answer is:
Claviceps

Solution:
Ergot of Rye is a plant disease that is caused by the fungus Claviceps purpurea. The so-called ergot that replaces the grain of the rye is a dark, purplish sclerotium, from which the sexual stage, of the life cycle will form after over wintering. Corn smut is caused by the fungus Ustilago maydis. Powdery mildew of grapes is caused by fungus Uncinula necator. Root and stem rot is caused by Phytophthora sojae.

Topic: Biology, Biological Classification, NEET, NEET 2007
Ernst Mayr was awarded the Balzan Prize in which year?

Options:
A 1983
B 1994
C 1999
D 2004

The correct answer is:
1983

Solution:
Ernst Mayr was awarded the Balzan Prize in 1983.

Topic: Biology, The Living World, NEET
Erythroblastosis foetalis can be seen in marriage between

Options:
A Rh-ve male and Rh+ve female
B Rh+ve male and Rh-ve female
C Rh-ve male and Rh-ve female
D Rh+ve male and Rh+ve female

The correct answer is:
Rh+ve male and Rh-ve female

Solution:
A special case of Rh incompatibility (mismatching) has been observed between the Rh-ve blood of a pregnant mother with Rh+ve blood of the foetus. Rh antigens of the foetus do not get exposed to the Rh-ve blood of the mother in the first pregnancy as the two types of blood are well separated by the placenta. However, during the delivery of the first child, there is a possibility of exposure of the maternal blood to small amounts of the Rh+ve blood from the foetus. In such cases, the mother starts preparing antibodies against Rh antigen in her blood. In case of her subsequent pregnancies, the Rh antibodies from the mother (Rh-ve) can leak into the blood of the foetus (Rh+ve) and destroy the foetal RBCs. This could be fatal to the foetus or could cause severe anaemia and jaundice to the baby. This condition is called erythroblastosis foetalis. This can be avoided by administering anti-Rh antibodies to the mother immediately after the delivery of the first child. Since the only antibody which can pass through the placenta is IgG, anti-Rh antibodies are actually a type IgG antibody.

Topic: Biology, Human Health and Diseases, NEET
Erythroblastosis foetalis can never occur in any child born to parents having blood groups

I. Mother: Rh-ve, Father: Rh+ve
II. Mother: Rh-ve, Father: Rh-ve
III. Mother: Rh+ve, Father: Rh-ve
IV. Mother: Rh+ve, Father: Rh+ve

Options:
A I and II
B III and IV
C I, II and III
D II, III and IV

The correct answer is:
II, III and IV

Solution:
Erythroblastosis foetalis is a condition seen when mother is Rh negative and the foetus is Rh positive. If foetus is Rh positive this means the father is also Rh positive. This is haemolytic condition which can be dangerous to the mother and also the second child if she conceives again. This is seen only in the above secanario.

Topic: Biology, Body Fluids and Circulation, NEET
Erythropoiesis may be stimulated by the deficiency of

Options:
A Iron
B Oxygen
C Protein
D None of the above

The correct answer is:
Oxygen

Solution:
The most important factor controlling the rate of RBC production is the oxygen content of the arterial blood, a decrease in oxygen content stimulates erythropoiesis.

Topic: Biology, Body Fluids and Circulation, NEET
Erythropoiesis starts in:

Options:
A Kidney
B Liver
C Spleen
D Red bone marrow

The correct answer is:
Red bone marrow

Solution:
Erythropoiesis starts in the liver and spleen in a foetus whereas in adults it starts in the red bone marrow. After birth, erythropoiesis occurs only in the bone marrow.

Topic: Biology, Structural Organisation in Animals, NEET, NEET 2015 (Phase 1)
Erythropoietin hormone which stimulates RBC formation is produced by:

Options:
A Alpha cells of pancreas
B The cells of rostral adenohypophysis
C The cells of bone marrow
D Juxtaglomerular cells of the kidney

The correct answer is:
Juxtaglomerular cells of the kidney

Solution:
Erythropoietin (Epo) is a glycoprotein that promotes the proliferation and differentiation of erythrocyte precursors. The juxtaglomerular kidney cells that make EPO are specialized and are sensitive to low oxygen levels in the blood coming into the kidney. After being released into the bloodstream it binds with receptors in the bone marrow, where it stimulates the production of red blood cells (erythrocytes). Medically, EPO is used to treat certain forms of anaemia.

Topic: Biology, Excretory Products and their Elimination, NEET, NEET 2021
Escherichia coli is used as an indicator organism to determine pollution of water with:

Options:
A heavy metals
B faecal matter
C industrial effluents
D pollen of aquatic plants

The correct answer is:
faecal matter

Solution:
Indicators of potential human or faecal contamination or of possible presence of pathogens include Staphylococci, Escherichia coli, faecal coliforms, Enterococci and Pseudomonas aeruginosa. Indicator organisms are used to assess overall sanitation or environmental conditions that may signal or indicate the potential presence of pathogens of food safety concern. It is important to note that indicator species are not necessarily pathogenic.

Topic: Biology, Organisms and Populations, NEET, NEET 2003
Escherichia coli is used extensively in biological research, because it is

Options:
A easily multiplied in host.
B easy to handle.
C easily available.
D easily cultured.

The correct answer is:
easily cultured.

Solution:
Escherichia coli is extensively used in biotechnological research because it can be easily cultured, and it can replicate rapidly. The ability to multiply copies of the antibiotic resistance gene in E. coli was called, cloning of antibiotic resistance gene in E. coli.

Topic: Biology, Biotechnology - Principles and Processes, NEET
Escherichia coli is used in biological research because

Options:
A it is easily available
B it can be easily cultured
C it is easy to handle
D it can easily multiply in the host

The correct answer is:
it can be easily cultured

Solution:
Escherichia coli is a bacterium that is rod-shaped and Gram-negative. It belongs to the genus Escherichia and the most widely studied prokaryotic model organism. This bacterium is mostly used in biological research for its minimal living requirement. This allows it to be cultured easily and manipulated as per the requirements making it inexpensive for lab purposes. The plasmid is used as a cloning vector in the genetic engineering process.

Topic: Biology, Biotechnology - Principles and Processes, NEET
Essential elements are

Options:
A Not required for normal reproduction
B Not replaceable by other elements
C Never directly involved with metabolism
D Required only in those metabolic processes responsible for biomass growth.

The correct answer is:
Not replaceable by other elements

Solution:
The criteria for the essentiality of an element are given below:
(i) The element must be absolutely necessary for supporting normal growth and reproduction. In the absence of the element the plants do not complete their life cycle or set the seeds.
(ii) The requirement of the element must be specific and not replaceable by another element. In other words, deficiency of any one element cannot be met by supplying some other element.
(iii) The element must be directly involved in the metabolism of the plant.

Topic: Biology, Mineral Nutrition, NEET
Essential requirement for seed germination is

Options:
A O2 and light
B H2O and O2
C H2O and high temperature
D scarification and vernalization

The correct answer is:
H2O and O2

Solution:
Germination is the process of growth of a plant that eventually causes the formation of a seedling. Many factors like temperature, water, oxygen regulate the process of germination. Seed is very durable and can germinate in a wide range of temperatures. Essential requirements for the germination process are water and oxygen and germination cannot occur take in their absence. Seeds need oxygen for aerobic respiration to produce energy.

Topic: Biology, Plant - Growth and Development, NEET
Estrogen and testosterone are steroid hormones and are most likely to bind with

Options:
A Membrane ions cannels
B Enzyme-linked membrane receptors
C G - protein linked membrane receptors
D Cytoplasmic receptors

The correct answer is:
Cytoplasmic receptors

Solution:
Oestrogen and testosterone are female and male sex hormones respectively. Chemically, these are steroid hormones (lipid soluble) which easily pass through the cell membrane and bind to specific intracellular receptor in cytoplasm.

Topic: Biology, Chemical Coordination and Integration, NEET
Ethanal and propanone undergo condensation reaction in presence of dil. alkali to form

Options:
A CH3CH(OH)CH2COCH3
B CH3-CO-C(OH)(CH3)2
C HOH2CCH2CH2COCH3
D CH3COCH(CH3)CH2OH

The correct answer is:
CH3CH(OH)CH2COCH3

Solution:
Ethanal and propanone undergo condensation reaction in presence of dil. alkali to form CH3CH(OH)CH2COCH3 . It is a case of cross aldol condensation.

Topic: Chemistry, Aldehydes and Ketones, NEET
Ethanal reacts with HCN and the addition product so obtained is hydrolyzed to form a new compound. This compound shows

Options:
A optical isomerism
B geometrical isomerism
C tautomerism
D metamerism

The correct answer is:
optical isomerism

Solution:
The asterisked carbon is 'chiral'.

Topic: Chemistry, Aldehydes and Ketones, NEET
Ethanol is commercially produced through a particular species of

Options:
A Clostridium
B Trichaderma
C Aspergillus
D Saccharomyces

The correct answer is:
Saccharomyces

Solution:
Yeast (Saccharomyces cerevisiae) is used for commercial production of ethanol.

Topic: Biology, Microbes in Human Welfare, NEET, NEET 2011 (Screening)
Ethers are prepared by the reaction of sodium alkoxides and alkyl halides. Which of the following reagents should be taken to prepare methyl tert-butyl ether?

Options:
A (CH3)3C-Br+NaOCH3
B CH3Br+NaOC(CH3)3
C CH3CH2Br+NaOC(CH3)2
D (CH3)2C-Br+NaOCH2CH3

The correct answer is:
CH3Br+NaOC(CH3)3

Solution:
Tertiary halide can involve elimination of HX to give alkene in presence of a base. Hence, a tertiary alkoxide and primary alkyl halide is taken for the reaction.
CH3Br+NaOC(CH3)3sod.t-butoxide→CH3O-C(CH3)3methylt-butylether+NaBr

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Ethers can be prepared by Williamson synthesis in which an alkyl halide is reacted with sodium alkoxide. Di-tert-butyl ether can’t be prepared by this method. Why?

Options:
A In tert-butyl halides, elimination is favored over substitution, so alkene is the only reaction product and ether is not formed.
B Di-tert-butyl ether is a highly reactive compound that undergoes side reactions during Williamson synthesis.
C Di-tert-butyl ether is a solid compound and does not dissolve in the reaction mixture required for Williamson synthesis.
D Di-tert-butyl ether is a symmetrical ether, and Williamson synthesis is only suitable for the preparation of unsymmetrical ethers.

The correct answer is:
In tert-butyl halides, elimination is favored over substitution, so alkene is the only reaction product and ether is not formed.

Solution:
Correct Option is : (A)
In tert-butyl halides, elimination is favored over substitution, so alkene is the only reaction product and ether is not formed.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Ethyl acetate is formed by the reaction between ethanol and acetic acid and the equilibrium is represented as:
\(\mathrm{CH}_3 \mathrm{COOH}(l)+\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}(l) \rightleftharpoons \mathrm{CH}_3 \mathrm{COOC}_2 \mathrm{H}_5(l)+\mathrm{H}_2 \mathrm{O}(l)\)
(i) Write the concentration ratio (reaction quotient), Qc, for this reaction (note: water is not in excess and is not a solvent in this reaction)

Options:
A \(\frac{\left[\mathrm{CH}_3 \mathrm{COOC}_2 \mathrm{H}_5\right] \cdot\left[\mathrm{H}_2 \mathrm{O}\right]}{\left[\mathrm{CH}_3 \mathrm{COOH}\right] \cdot\left[\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}\right]}\)
B \(\frac{\left[\mathrm{CH}_3 \mathrm{COOH}\right] \cdot\left[\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}\right]}{\left[\mathrm{CH}_3 \mathrm{COOC}{ }_2 \mathrm{H}_5\right] \cdot\left[\mathrm{H}_2 \mathrm{O}\right]}\)
C \(\frac{\left[\mathrm{CH}_3 \mathrm{COOCO}_2 \mathrm{H}_5\right] \cdot\left[\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}\right]}{\left[\mathrm{CH} \mathrm{H}_3 \mathrm{COOH}\right] \cdot\left[\mathrm{H}_2 \mathrm{O}\right]}\)
D \(\frac{\left[\mathrm{CH}_3 \mathrm{COOC}_2 \mathrm{H}_5\right] \cdot\left[\mathrm{H}_2 \mathrm{O}\right]}{\left[\mathrm{CH}_3 \mathrm{COOH}\right] \cdot\left[\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}\right]}\)

The correct answer is:
\(\frac{\left[\mathrm{CH}_3 \mathrm{COOC}_2 \mathrm{H}_5\right] \cdot\left[\mathrm{H}_2 \mathrm{O}\right]}{\left[\mathrm{CH}_3 \mathrm{COOH}\right] \cdot\left[\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}\right]}\)

Solution:
Correct Option is : (D)
\(\frac{\left[\mathrm{CH}_3 \mathrm{COOC}_2 \mathrm{H}_5\right] \cdot\left[\mathrm{H}_2 \mathrm{O}\right]}{\left[\mathrm{CH}_3 \mathrm{COOH}\right] \cdot\left[\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}\right]}\)

Topic: Chemistry, Ionic Equilibrium, NEET
Ethyl alcohol on oxidation with K2Cr2O7 gives

Options:
A Acetic acid
B Acetaldehyde
C Formaldehyde
D Formic acid

The correct answer is:
Acetic acid

Solution:
Ethyl alcohol on oxidation with K2Cr2O7 gives Acetic acid.
CH3CH2OH→K2Cr2O7CH3COOH

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Ethyl isocyanide on hydrolysis in acidic medium generates

Options:
A Propanoic acid and ammonium salt
B Ethanoic acid and ammonium salt
C Methylamine salt and ethanoic acid
D Ethylamine and methanoic acid

The correct answer is:
Ethylamine and methanoic acid

Solution:
Ethyl isocyanide on hydrolysis form primary amines.
CH 3 CH 2 NC + H 2 O → H + CH 3 CH 2 NH 2 + HCOOH

Topic: Chemistry, Amines, NEET
Ethylamine is heated with CS2 in the presence of HgCl2 . The product formed is

Options:
A ethanethiol
B diethyl sulphide
C ethyl thiocyanate
D ethyl isothiocyanate

The correct answer is:
ethyl isothiocyanate

Solution:
It is Hoffmann mustard oil reaction
C2H5-NH2+S=C=S→HgCl2C2H5-N=C=S

Topic: Chemistry, Amines, NEET
Ethylbenzene is generally prepared by acetylation of benzene followed by reduction and not by direct alkylation.Why?

Options:
A Direct alkylation of benzene with ethyl groups is a highly exothermic reaction.
B Acetylation followed by reduction provides a better yield of ethylbenzene.
C The direct alkylation cannot be performed because a poly-substituted product is also formed. After the monoalkylation, the benzene ring is activated and can undergo further alkylation
D Acetylation of benzene is a more cost-effective and readily available process.

The correct answer is:
The direct alkylation cannot be performed because a poly-substituted product is also formed. After the monoalkylation, the benzene ring is activated and can undergo further alkylation

Solution:
Correct Option is : (C)
The direct alkylation cannot be performed because a poly-substituted product is also formed. After the monoalkylation, the benzene ring is activated and can undergo further alkylation

Topic: Chemistry, Aldehydes and Ketones, NEET
Ethylene diaminetetraacetate (EDTA) ion is:

Options:
A Hexadentate ligand with four "O" and two "N"" donor atoms
B Unidentate ligand
C Bidentate ligand with two"N"" donor atoms
D Tridentate ligand with three "N"" donor atoms

The correct answer is:
Hexadentate ligand with four "O" and two "N"" donor atoms

Solution:
EDTA is

EDTA is hexadentate ligand having four oxygen donor atoms and two nitrogen donor atoms.

Topic: Chemistry, Coordination Compounds, NEET, NEET 2021
Ethylene diaminetetraacetate ion is a/an:

Options:
A hexadentate ligand
B ambidentate ligand
C monodentate ligand
D bidentate ligand

The correct answer is:
hexadentate ligand

Solution:
It is hexadentate as it can bind through two nitrogen and four oxygen atoms to a central metal ion.

Topic: Chemistry, Coordination Compounds, NEET, NEET 2024 (Re-NEET)
Ethylene dichloride and ethylidene chloride are isomeric compounds. The false statement about these isomers is that they

Options:
A are both hydrolysed to the same product
B contain the same percentage of chlorine
C are position isomers
D react with alcoholic potash and give the same product

The correct answer is:
are both hydrolysed to the same product

Solution:
On hydrolysis both gives different compounds.
CH2Cl-CH2ClEthylenedichloride→aq.KOHCH2OH-CH2OHGlycol

Topic: Chemistry, Aldehydes and Ketones, NEET
Ethylene glycol, when heated with anhydrous ZnCl2 , forms

Options:
A vinyl alcohol
B ethyl alcohol
C acetaldehye
D acetic acid

The correct answer is:
acetaldehye

Solution:
Ethylene glycol, when heated with anhydrous ZnCl2 , forms acetaldehye.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Ethylene is highly effective in fruit ripening. It enhances the respiration rate during ripening of fruits, this rise in rate of respiration is called

Options:
A Respiratory climactic
B Respiratory quotient
C Respiratory effect
D Respiratory quiescence

The correct answer is:
Respiratory climactic

Solution:
Ethylene promotes senescence and abscission of plant organs especially of leaves and flowers. Ethylene is highly effective in fruit ripening. It enhances the respiration rate during ripening of the fruits. This rise in rate of respiration is called respiratory climactic.

Topic: Biology, Plant - Growth and Development, NEET
Ethylene reacts with Baeyer's reagent to give

Options:
A Ethane
B Ethyl alcohol
C Ethylene glycol
D None of these

The correct answer is:
Ethylene glycol

Solution:
Baeyr's reagent is an alkaline solution of cold Potassium permanganate, 3CH2=CH2+2KMnO4+4H2Oâ3CH2-OHCH2-| OHGlycol+ 2KMnO2+2KOH

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Ethylene reacts with Baeyer's reagent to give

Options:
A Ethane
B Ethyl alcohol
C Ethylene glycol
D None of these

The correct answer is:
Ethylene glycol

Solution:
Baeyr's reagent is an alkaline solution of cold Potassium permanganate,3CH2=CH2+2KMnO4+4H2Oâ3CH2-OHCH2-| OHGlycol+ 2KMnO2+2KOH

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Ethylidene chloride on treatment with aqueous KOH gives ?

Options:
A Ethylene glycol
B Acetaldehyde
C Formaldehyde
D Ethyl alcohol

The correct answer is:
Acetaldehyde

Solution:
On treatment of ethylidene with aq. KOH gives acetaldehyde. The reaction is as follows :

Topic: Chemistry, Haloalkanes and Haloarenes, NEET