datavorous/entrance-exam-dataset huggingface dataset:
Precondition for adaptive radiation is:

Options:
A Natural selection
B Breaching descent
C Geographical barrier
D Saltation

The correct answer is:
Geographical barrier

Solution:
The most important pre-condition for adaptive radiation is a geographic barrier or an isolated habitat.

Topic: Biology, Evolution, NEET
Predict all the alkenes that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane with sodium ethoxide in ethanol and identify the major alkene

Options:
A 1-methyl-2-cyclohexene
B 1-methyl-1-cyclohexene
C 1-methyl-1-cycloheptene
D 4-methyl-1-cyclohexene

The correct answer is:
1-methyl-1-cyclohexene

Solution:
Correct Option is : (B)
1-methyl-1-cyclohexene

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Predict all the alkenes that would be formed by dehydrohalogenation of 2-Chloro-2-methylbutane with sodium ethoxide in ethanol and identify the major alkene

Options:
A 2-methylbut-2-ene(major product) and 2-methylbut-1-ene
B 2-methylbut-1-ene(major product)
C 2-methylbut-2-ene and 2-methylbut-1-ene (major product)
D 2-methylbut-2-ene(major product)

The correct answer is:
2-methylbut-2-ene(major product) and 2-methylbut-1-ene

Solution:
Correct Option is : (A)
2-methylbut-2-ene(major product) and 2-methylbut-1-ene

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Predict all the alkenes that would be formed by dehydrohalogenation of 2,2,3-Trimethyl-3-bromopentane with sodium ethoxide in ethanol and identify the major alkene

Options:
A Trimethylpentene(major product) and 2-Ethyl-3,3-dimethylbut–1-ene
B 3,4,4-trimethylpent-2-ene and 2-Ethyl-3,3-dimethylbut–1-ene(major product)
C 3,4,4-trimethylpent-2-ene(major product) and Ethyldimethylbut–1-ene
D 3,4,4-trimethylpent-2-ene(major product) and 2-Ethyl-3,3-dimethylbut–1-ene

The correct answer is:
3,4,4-trimethylpent-2-ene(major product) and 2-Ethyl-3,3-dimethylbut–1-ene

Solution:
Correct Option is : (D)
3,4,4-trimethylpent-2-ene(major product) and 2-Ethyl-3,3-dimethylbut–1-ene

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Predict conditions under which Aluminum (Al) might be expected to reduce Magnesium Oxide (MgO).

Options:
A High temperatures above the melting points of both Al and MgO.
B Low temperatures below the melting points of both Al and MgO.
C High temperatures above the melting point of Al but below the melting point of MgO.
D Low temperatures below the melting point of Al but above the melting point of MgO.

The correct answer is:
High temperatures above the melting points of both Al and MgO.

Solution:
Correct Option is : (A)
High temperatures above the melting points of both Al and MgO.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
Predict if the solutions of the following salts are neutral, acidic or basic\nNaCl, KBr, NaCN, NH4NO3, NaNO2and KF.

Options:
A NaCl - Neutral, KBr - Neutral, NaCN - Basic, NH4NO3- Neutral, NaNO2-Acidic, KF – Basic
B NaCl - Neutral, KBr - Neutral, NaCN - Basic, NH4NO3- Acidic, NaNO2-Basic, KF – Acidic
C NaCl - Neutral, KBr - Neutral, NaCN - Basic, NH4NO3- Acidic, NaNO2-Acidic, KF – Neutral
D NaCl - Acidic, KBr - Acidic, NaCN - Basic, NH4NO3- Neutral, NaNO2- Basic, KF - Acidic

The correct answer is:
NaCl - Neutral, KBr - Neutral, NaCN - Basic, NH4NO3- Acidic, NaNO2-Acidic, KF – Neutral

Solution:
Correct Option is : (C)
NaCl - Neutral, KBr - Neutral, NaCN - Basic, NH4NO3- Acidic, NaNO2-Acidic, KF – Neutral

Topic: Chemistry, Ionic Equilibrium, NEET
Predict in which of the following, entropy increases/decreases : (i) 2NaHCO3(s) → Na2CO3(s) + H2O(g) + CO2(g) and (ii) H2(g) → 2H(g)

Options:
A (i) entropy increases and (ii) entropy decreases
B (i) entropy decreases and (ii) entropy increases
C (i) entropy increases and (ii) entropy increases
D (i) entropy decreases and (ii) entropy decreases

The correct answer is:
(i) entropy increases and (ii) entropy increases

Solution:
Correct Option is : (C)
(i) entropy increases and (ii) entropy increases

Topic: Chemistry, Thermodynamics (C), NEET
Predict in which of the following, entropy increases/decreases : (i) A liquid crystallizes into a solid and (ii) Temperature of a crystalline solid is raised from 0 K to 115 K.

Options:
A (i) entropy increases and (ii) entropy decreases
B (i) entropy decreases and (ii) entropy increases
C (i) entropy increases and (ii) entropy increases
D (i) entropy decreases and (ii) entropy decreases

The correct answer is:
(i) entropy decreases and (ii) entropy increases

Solution:
Correct Option is : (B)
(i) entropy decreases and (ii) entropy increases

Topic: Chemistry, Thermodynamics (C), NEET
Predict the abbreviation and digit for enn

Options:
A e ,9
B e ,11
C E ,9
D E ,11

The correct answer is:
e ,9

Solution:
Correct Option is : 1
e ,9

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Predict the abbreviation and digit for nil

Options:
A N , 0
B N ,1
C n , 0
D n ,1

The correct answer is:
n , 0

Solution:
Correct Option is : 3
n , 0

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Predict the abbreviation and digit for un

Options:
A u , 0
B u ,1
C u , 2
D U,0

The correct answer is:
u ,1

Solution:
Correct Option is : 2
u ,1

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Predict the atomic weight of C , N and O

Options:
A 6,7,8
B 12,14,16
C 12,14,18
D 12,13,16

The correct answer is:
12,14,16

Solution:
Correct Option is : 2
12,14,16

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Predict the atomic weight of Li , Be and B

Options:
A 6,8,10
B 7,9,11
C 5,7,10
D 7,9,10

The correct answer is:
7,9,11

Solution:
Correct Option is : 2
7,9,11

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Predict the atomic weight of P , S and Cl

Options:
A 32,33,35.5
B 33,34,35.5
C 31,32,35.5
D 32,34,35.5

The correct answer is:
31,32,35.5

Solution:
Correct Option is : 3
31,32,35.5

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Predict the change in internal energy for an isolated system at constant volume.

Options:
A ∆U = 0
B ∆U = ∞
C ∆U ≠ 0
D ∆U cannot be calculated for isolated systems

The correct answer is:
∆U = 0

Solution:
Correct Option is : (A)
∆U = 0

Topic: Chemistry, Thermodynamics (C), NEET
Predict the correct conclusion from the following chart.

Options:
A character is dominant and carried by X chromosome
B character is carried by Y chromosome
C character is sex linked recessive
D character is recessive autosomal

The correct answer is:
character is sex linked recessive

Solution:
The trait shown in the pedigree is X - linked recessive in which carrier female can transfer the diseased allele to some of its male progeny.

Topic: Biology, Principles of Inheritance and Variation, NEET
Predict the correct intermediate and product in the following reaction
H3C-C≡CH→H2O,H2SO4intermediate(X)→product(Y)

Options:
A
B
C
D

The correct answer is:

Solution:
Here first addition reaction occurs according to Markonikov reaction than tautomerisation occurs to give acetone as follows
H 3 C−C≡CH → H 2 O CH 3 −C= | OH CH 2 → Tautomerisation CH 3 − C || O − CH 3 Y

Topic: Chemistry, Hydrocarbons, NEET
Predict the correct intermediate and product in the following reaction
H 3 C - C ≡ CH → HgSO 4 H 2 O , H 2 SO 4 intermediate → product (A) (B)

Options:
A A : H 3 C - C | SO 4 = CH 2 B : H 3 C - C || O - CH 3
B A : H 3 C - C | OH = CH 2 B : H 3 C - C | SO 4 = CH 2
C A : H 3 C - C || O - CH 3 B : H 3 C - C ≡ CH
D A : H 3 C - C | OH = CH 2 B : H 3 C - C || O - CH 3

The correct answer is:
A : H 3 C - C | OH = CH 2 B : H 3 C - C || O - CH 3

Solution:
A=prop-1-en-2-ol , B=Acetone

Topic: Chemistry, Alcohols Phenols and Ethers, NEET, NEET 2017
Predict the correct order among the following:

Options:
A Lone pair - lone pair > lone pair - bond pair > bond pair - bond pair
B Lone pair - lone pair > bond pair - bond pair > lone pair - bond pair
C Bond pair - bond pair > lone pair - bond pair > lone pair - lone pair
D Lone pair - bond pair > bond pair - bond pair > lone pair - lone pair

The correct answer is:
Lone pair - lone pair > lone pair - bond pair > bond pair - bond pair

Solution:
As per VSEPR theory, overall order of Repulsion is:

Bond pair-bond pair<Bond pair-lone pair<Lone pair-lone pair. Since lone pair occupy more space in comparison to bond pair therefore, it causes more repulsion.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET, NEET 2016 (Phase 1)
Predict the Density of Eka-aluminium (i) and Eka-silicon(ii)

Options:
A i
B i>ii
C i=ii
D None of above

The correct answer is:
i>ii

Solution:
Correct Option is : 2
i>ii

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Predict the Density of Gallium (i) and Germanium (ii)

Options:
A i
B i>ii
C i=ii
D None of above

The correct answer is:
i>ii

Solution:
Correct Option is : 2
i>ii

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Predict the direction of induced current in the situations described by the following Fig

Options:
A clockwise
B anticlockwise
C No current induced
D Cannot determine

The correct answer is:
No current induced

Solution:
Correct Option is : (C)
No current induced

Topic: Chemistry, Electromagnetic Induction, NEET
Predict the direction of induced current in the situations described by the following Fig

Options:
A Along qprq
B Along qrpq
C along both
D Cannot determine

The correct answer is:
Along qrpq

Solution:
Correct Option is : (B)
Along qrpq

Topic: Chemistry, Electromagnetic Induction, NEET
Predict the direction of induced current in the situations described by the following Fig

Options:
A Along yzx
B Along yxz
C along both
D Cannot determine

The correct answer is:
Along yxz

Solution:
Correct Option is : (B)
Along yxz

Topic: Chemistry, Electromagnetic Induction, NEET
Predict the direction of induced current in the situations described by the following Fig

Options:
A Along yzx
B Along yxz
C along both
D Cannot determine

The correct answer is:
Along yzx

Solution:
Correct Option is : (A)
Along yzx

Topic: Chemistry, Electromagnetic Induction, NEET
Predict the direction of induced current in the situations described by the following Fig

Options:
A Along xyr
B Along xry
C No current induced
D Cannot determine

The correct answer is:
Along xry

Solution:
Correct Option is : (B)
Along xry

Topic: Chemistry, Electromagnetic Induction, NEET
Predict the direction of induced current in the situations described by the following Fig

Options:
A Along prq, Along yzx
B Along pqr, Along yxz
C Along prq, Along yxz
D Along pqr, Along yzx

The correct answer is:
Along prq, Along yzx

Solution:
Correct Option is : (A)
Along prq, Along yzx

Topic: Chemistry, Electromagnetic Induction, NEET
Predict the formula of the stable binary compound that would be formed by the combination of Aluminium and Iodine

Options:
A Alɪ
B Alɪ₂
C Al₂ɪ₃
D Alɪ3

The correct answer is:
Alɪ3

Solution:
Correct Option is : (D)
Alɪ3

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Predict the formula of the stable binary compound that would be formed by the combination of Element 71 and fluorine

Options:
A LuF2
B LuF
C Lu2F
D LuF₃

The correct answer is:
LuF₃

Solution:
Correct Option is : (D)
LuF₃

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Predict the formula of the stable binary compound that would be formed by the combination of Lithium and Oxygen

Options:
A LiO2
B Li4O7
C LiO
D Li2O3

The correct answer is:
LiO2

Solution:
Correct Option is : (A)
LiO2

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Predict the formula of the stable binary compound that would be formed by the combination of Magnesium and Nitrogen

Options:
A MgN
B Mg₃N₂
C Mg₂N₃
D Mg₃N

The correct answer is:
Mg₃N₂

Solution:
Correct Option is : (B)
Mg₃N₂

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Predict the formula of the stable binary compound that would be formed by the combination of Phosphorus and Fluorine

Options:
A PF
B PF₂
C PF₃
D PF8

The correct answer is:
PF₃

Solution:
Correct Option is : (C)
PF₃

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Predict the formula of the stable binary compound that would be formed by the combination of Silicon and Oxygen

Options:
A SiO
B SiO₂
C Si₂O
D Si₂O₃

The correct answer is:
SiO₂

Solution:
Correct Option is : (B)
SiO₂

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Predict the major product formed when HCl is added to isobutylene.

Options:
A 1-Chloro-1–methylpropane
B 2-Chloro-3–methylpropane
C 2-Chloro-2–methylpropane
D 1-Chloro-methylpropane

The correct answer is:
2-Chloro-2–methylpropane

Solution:
Correct Option is : (C)
2-Chloro-2–methylpropane

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Predict the major product of acid catalyzed dehydration of (i) 1-methylcyclohexanol and (ii) butan-1-ol

Options:
A (i) 1-Cyclohexene and (ii) But-1-ene
B (i) 1-Methylcyclohexene and (ii) But-1-ene
C (i) 1-Cyclohexene and (ii) But-2-ene
D (i) 1-Methylcyclohexene and (ii) But-2-ene

The correct answer is:
(i) 1-Methylcyclohexene and (ii) But-2-ene

Solution:
Correct Option is : (D)
(i) 1-Methylcyclohexene and (ii) But-2-ene

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Predict the major product (s) of the following reactions and explain their formation.

Options:
A (i) H3C-CH2-CH2Br and (ii) H3C-(Br)-CH3
B (i) H3C-CH2Br and (ii) H3C-CH(Br)-CH3
C (i) H3C-CH2-CH2Br and (ii) H3C-CH2(Br)
D (i) H3C-CH2-CH2Br and (ii) H3C-CH(Br)-CH3

The correct answer is:
(i) H3C-CH2-CH2Br and (ii) H3C-CH(Br)-CH3

Solution:
Correct Option is : (D)
(i) H3C-CH2-CH2Br and (ii) H3C-CH(Br)-CH3

Topic: Chemistry, Hydrocarbons, NEET
Predict the major product/s of the given reaction
major product

Options:
A
B
C
D

The correct answer is:

Solution:
Here addition occurs at double bond as follows

Topic: Chemistry, Hydrocarbons, NEET
Predict the melting point of Eka-aluminium and Eka-silicon

Options:
A Low , Low
B Low ,High
C High, Low
D High , High

The correct answer is:
Low ,High

Solution:
Correct Option is : 2
Low ,High

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Predict the n1 and n2 for Pfund series?

Options:
A n1 =4 ,n2 =5,6,7,8…..
B n1= 5 ,n2 =6,7,8,9…..
C n1= 6 ,n2 =7,8,9,10…..
D n1= 3 ,n2 =4,5,6,7….

The correct answer is:
n1= 5 ,n2 =6,7,8,9…..

Solution:
Correct Option is : 2
n1= 5 ,n2 =6,7,8,9…..

Topic: Chemistry, Structure of Atom, NEET
Predict the order of bond angle

Options:
A NH3>PH3>AsH3>SbH3
B NH3333
C NH33>AsH33
D NH333>SbH3

The correct answer is:
NH3>PH3>AsH3>SbH3

Solution:
Correct Option is : 1
NH3>PH3>AsH3>SbH3

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Predict the order of reactivity of the following compounds in SN1 reaction: C6H5CH2Br, C6H5CH(C6H5)Br, C6H5CH(CH3)Br, C6H5C(CH3)(C6H5)Br

Options:
A C6H5C(CH3)(C6H5)Br > C6H5CH(C6H5)Br > C6H5CH2Br > C6H5CH(CH3)Br
B C6H5C(CH3)(C6H5)Br > C6H5CH(C6H5)Br > C6H5CH(CH3)Br > C6H5CH2Br
C C6H5CH(CH3)Br > C6H5CH2Br > C6H5C(CH3)(C6H5)Br > C6H5CH(C6H5)Br
D C6H5CH(C6H5)Br > C6H5CH(CH3)Br > C6H5CH2Br > C6H5C(CH3)(C6H5)Br

The correct answer is:
C6H5C(CH3)(C6H5)Br > C6H5CH(C6H5)Br > C6H5CH(CH3)Br > C6H5CH2Br

Solution:
Correct Option is : (B)
C6H5C(CH3)(C6H5)Br > C6H5CH(C6H5)Br > C6H5CH(CH3)Br > C6H5CH2Br

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Predict the order of reactivity of the following compounds in SN1 reaction: The four isomeric bromobutanes

Options:
A CH3CH2CH2CH2Br < CH3CH2CH(Br)CH3< (CH3)3CBr < (CH3)2CHCH2Br
B (CH3)2CHCH2Br < CH3CH2CH(Br)CH3< (CH3)3CBr < CH3CH2CH2CH2Br
C CH3CH2CH2CH2Br < (CH3)2CHCH2Br < CH3CH2CH(Br)CH3< (CH3)3CBr
D CH3CH2CH(Br)CH3< (CH3)3CBr < CH3CH2CH2CH2Br < (CH3)2CHCH2Br

The correct answer is:
CH3CH2CH2CH2Br < (CH3)2CHCH2Br < CH3CH2CH(Br)CH3< (CH3)3CBr

Solution:
Correct Option is : (C)
CH3CH2CH2CH2Br < (CH3)2CHCH2Br < CH3CH2CH(Br)CH3< (CH3)3CBr

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Predict the order of reactivity of the following compounds in SN2 reaction: C6H5CH2Br, C6H5CH(C6H5)Br, C6H5CH(CH3)Br, C6H5C(CH3)(C6H5)Br

Options:
A C6H5C(CH3)(C6H5)Br < C6H5CH(C6H5)Br < C6H5CH(CH3)Br < C6H5CH2Br
B C6H5C(CH3)(C6H5)Br < C6H5CH(CH3)Br < C6H5CH2Br < C6H5CH(C6H5)Br
C C6H5C(CH3)(C6H5)Br < C6H5CH(C6H5)Br < C6H5CH2Br < C6H5CH(CH3)Br
D C6H5CH(C6H5)Br < C6H5CH(CH3)Br < C6H5CH2Br < C6H5C(CH3)(C6H5)Br

The correct answer is:
C6H5C(CH3)(C6H5)Br < C6H5CH(C6H5)Br < C6H5CH(CH3)Br < C6H5CH2Br

Solution:
Correct Option is : (A)
C6H5C(CH3)(C6H5)Br < C6H5CH(C6H5)Br < C6H5CH(CH3)Br < C6H5CH2Br

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Predict the order of reactivity of the following compounds in SN2 reaction: The four isomeric bromobutanes

Options:
A CH3CH2CH2CH2Br > (CH3)2CHCH2Br > (CH3)3CBr > CH3CH2CH(Br)CH3
B (CH3)2CHCH2Br > CH3CH2CH(Br)CH3> (CH3)3CBr > CH3CH2CH2CH2Br
C CH3CH2CH2CH2Br > CH3CH2CH(Br)CH3> (CH3)3CBr > (CH3)2CHCH2Br
D CH3CH2CH2CH2Br > (CH3)2CHCH2Br > CH3CH2CH(Br)CH3> (CH3)3CBr

The correct answer is:
CH3CH2CH2CH2Br > (CH3)2CHCH2Br > CH3CH2CH(Br)CH3> (CH3)3CBr

Solution:
Correct Option is : (D)
CH3CH2CH2CH2Br > (CH3)2CHCH2Br > CH3CH2CH(Br)CH3> (CH3)3CBr

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Predict the order of reactivity of the following four isomers towards $\mathrm{S}_{\mathrm{N}} 2$ reaction.
(I) $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{Cl}$
(II) $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}(\mathrm{Cl}) \mathrm{CH}_3$
(III) $\left(\mathrm{CH}_3\right)_2 \mathrm{CHCH}_2 \mathrm{Cl}$
(IV) $\left(\mathrm{CH}_3\right)_3 \mathrm{CCl}$

Options:
A (IV) $>$ (III) $>$ (II) $>$ (I)
B (I) $>$ (II) $>$ (III) $>$ (IV)
C (I) $>$ (III) $>$ (II) $>$ (IV)
D (IV) $>$ (II) $>$ (III) $>$ (I)

The correct answer is:
(I) $>$ (III) $>$ (II) $>$ (IV)

Solution:
The rate of reaction decreases with increase in stearu crowding around the substrate centre.
$\therefore \quad$ Rate of $\mathrm{S}_{\mathrm{N}}^2 \propto \frac{1}{\text { Stearic crowding }}$
$\therefore$ Rate of reactivity order is $: \mathrm{I}>$ III $>$ II $>$ IV

Topic: Chemistry, Haloalkanes and Haloarenes, NEET, NEET 2022 (Phase 2)
Predict the period, group and block of an element having electronic configuration 1s22s22p63s23p4 .

Options:
A Period=3rd,block=p,group=16
B Period=3rd,block=p,group=10
C Period=4th,block=d,group=12
D Period=5th,block=s,group=1

The correct answer is:
Period=3rd,block=p,group=16

Solution:
By observing principal quantum number (n), Orbital (s,p,d,f) and equating no. of e- ’s
we are able to find the period, block and group of element in periodic table.

Topic: Chemistry, Structure of Atom, NEET
Predict the product C in the following series of reactions,

Options:
A
B CH3CHOHC6H5
C CH3CHOHC2H5
D ( C H 3 ) 2 C( OH )C 6 H 5

The correct answer is:
( C H 3 ) 2 C( OH )C 6 H 5

Solution:

Topic: Chemistry, Carboxylic Acid Derivatives, NEET
Predict the product $\mathrm{C}$ obtained in the following reaction of butyne- 1 :
$\mathrm{CH}_3 \mathrm{CH}_2-\mathrm{C} \equiv \mathrm{CH}+\mathrm{HCl} \rightarrow \mathrm{B} \stackrel{\mathrm{HI}}{\longrightarrow} \mathrm{C}$

Options:
A

B

C

D

The correct answer is:

Solution:
A Caution
According to Markownikoff's rule, when an unsymmetrical alkene undergo hydrohalogenation, the negative part goes to that $C$-atom which contain lesser no. of H-atom.

Topic: Chemistry, Hydrocarbons, NEET, NEET 2007
Predict the product formed when cyclohexanecarbaldehyde reacts with excess ethanol and acid

Options:
A Cyclohexanecarbaldehyde diethyl acetal
B Diethyl acetal
C Cyclohexanecarbaldehyde
D Cyclohexanecarbaldehyde methyl acetal

The correct answer is:
Cyclohexanecarbaldehyde diethyl acetal

Solution:
Correct Option is : (A)
Cyclohexanecarbaldehyde diethyl acetal

Topic: Chemistry, Aldehydes and Ketones, NEET
Predict the product formed when cyclohexanecarbaldehyde reacts with PhMgBr and then H3O+

Options:
A Cyclohexyl Phenyl Ethanol
B Cycloheptylphenyl Methanol
C 1-Cyclohexyl 1-phenyl methanol
D Phenyl Methanol

The correct answer is:
1-Cyclohexyl 1-phenyl methanol

Solution:
Correct Option is : (C)
1-Cyclohexyl 1-phenyl methanol

Topic: Chemistry, Aldehydes and Ketones, NEET
Predict the product formed when cyclohexanecarbaldehyde reacts with Semicarbazide and weak acid

Options:
A Cyclohexanecarbaldehyde Carbazone
B Cyclohexanecarbaldehyde Semicarbazone
C Semicarbazone
D Cyclohexanecarbaldehyde

The correct answer is:
Cyclohexanecarbaldehyde Semicarbazone

Solution:
Correct Option is : (B)
Cyclohexanecarbaldehyde Semicarbazone

Topic: Chemistry, Aldehydes and Ketones, NEET
Predict the product formed when cyclohexanecarbaldehyde reacts with Tollens’ reagent

Options:
A Cyclohexylate ion
B Carboxylate ion
C Cycloheptanecarboxylate ion
D Cyclohexanecarboxylate ion

The correct answer is:
Cyclohexanecarboxylate ion

Solution:
Correct Option is : (D)
Cyclohexanecarboxylate ion

Topic: Chemistry, Aldehydes and Ketones, NEET
Predict the product formed when cyclohexanecarbaldehyde reacts with Zinc amalgam and dilute hydrochloric acid

Options:
A Methylcyclohexane
B Ethylcyclohexane
C Methylcycloheptane
D Ethylcycloheptane

The correct answer is:
Methylcyclohexane

Solution:
Correct Option is : (A)
Methylcyclohexane

Topic: Chemistry, Aldehydes and Ketones, NEET
Predict the product of reaction of aniline with bromine in non-polar solvent such as CS2.

Options:
A A mixture of 2-bromoaniline and 4-bromoaniline is formed.
B A mixture of 3-bromoaniline and 4-bromoaniline is formed.
C Only 2-bromoaniline is formed.
D Only 4-bromoaniline is formed.

The correct answer is:
A mixture of 2-bromoaniline and 4-bromoaniline is formed.

Solution:
Correct Option is : (A)
A mixture of 2-bromoaniline and 4-bromoaniline is formed.

Topic: Chemistry, Amines, NEET
Predict the product of the following reaction:

Options:
A Cyclopentanone
B Cyclopentanone oxime
C Cyclopentanone imine
D Cyclopentanal

The correct answer is:
Cyclopentanone oxime

Solution:
Correct Option is : (B)
Cyclopentanone oxime

Topic: Chemistry, Aldehydes and Ketones, NEET
Predict the product of the following reaction:

Options:
A Semicarbaldehyde
B Semicarboxylic acid
C Semicarbazone
D Semiethanoxymethane

The correct answer is:
Semicarbazone

Solution:
Correct Option is : (C)
Semicarbazone

Topic: Chemistry, Aldehydes and Ketones, NEET
Predict the product of the following reaction:

Options:
A 2,4-dinitro phenyl hydrazone
B 2,3-dinitro phenyl hydrazone
C 2,2-dinitro phenyl hydrazone
D 1,1-dinitro phenyl hydrazone

The correct answer is:
2,4-dinitro phenyl hydrazone

Solution:
Correct Option is : (A)
2,4-dinitro phenyl hydrazone

Topic: Chemistry, Aldehydes and Ketones, NEET
Predict the product of the reaction

Options:
A
B
C
D

The correct answer is:

Solution:
The more stable conjugated diene B is formed, even though it is less substituted than the isolated diene A, which is not formed.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Predict the products in the given reaction,

Options:
A

B

C

D

The correct answer is:

Solution:
When benzaldehyde is treated with $50 \%$ alkali, it undergoes oxidation to give an acid salt as well as reduction to give an alcohol. This reaction is called Cannizzaro's reaction.

Topic: Chemistry, Aldehydes and Ketones, NEET, NEET 2012 (Screening)
Predict the products of electrolysis in each of the following A dilute solution of H₂SO₄ with platinum electrodes.

Options:
A 2H⁺ ions reduced to H₂(g) at the cathode; 2H₂O(l) oxidized to O₂(g) and 4H⁺ ions at the anode.
B 2H⁺ ions reduced to H₂(g) at the cathode; 2H⁺ ions oxidized to O₂(g) and 2H₂O(l) at the anode.
C Cu²⁺ ions reduced to Cu(s) at the cathode; Cl⁻ ions oxidized to Cl₂(g) at the anode.
D Ag⁺ ions reduced to Ag(s) at the cathode; OH⁻ ions oxidized to O₂(g) and H₂O(l) at the anode.

The correct answer is:
2H⁺ ions reduced to H₂(g) at the cathode; 2H₂O(l) oxidized to O₂(g) and 4H⁺ ions at the anode.

Solution:
Correct Option is : (A)
2H⁺ ions reduced to H₂(g) at the cathode; 2H₂O(l) oxidized to O₂(g) and 4H⁺ ions at the anode.

Topic: Chemistry, Electrochemistry, NEET