Question 1: Palette 1/100

NEET 2026 MCQ

Compound $\mathrm{P}\left(\mathrm{C}_8 \mathrm{H}_8 \mathrm{O}\right)$ gives a red orange precipitate with 2,4-DNP reagent and it does not reduce Fehling's reagent. On drastic oxidation with chromic acid, $P$ gives an aromatic product $Q$ that produces effervescence on treating with aq. $\mathrm{NaHCO}_3$. Compounds P and Q , respectively, are :

A

B

C

D

Question 2: Palette 2/100

NEET 2026 MCQ

$ \text { Match List I with List II: } $

Choose the correct answer from the options given below :

A

A-II, B-III, C-I, D-IV

B

A-II, B-III, C-IV, D-I

C

A-II, B-IV, C-III, D-I

D

A-I, B-III, C-IV, D-II

Question 3: Palette 3/100

NEET 2026 MCQ

In a test tube containing a salt, a few drops of dilute $\mathrm{H}_2 \mathrm{SO}_4$ was added, which gave colourless vapours having the smell of vinegar. The vapours turned the blue litmus paper red.

Identify the correct anion from the following :

A

Sulphide, $\mathrm{S}^{2-}$

B

Sulphate, $\mathrm{SO}_4^{2-}$

C

Acetate, $\mathrm{CH}_3 \mathrm{COO}^{-}$

D

Carbonate, $\mathrm{CO}_3^{2-}$

Question 4: Palette 4/100

NEET 2026 MCQ

Consider the following reaction, and choose the correct option.

A

Compound $\mathbf{P}$ is obtained by the hydrogenation of benzoyl chloride with Pd on $\mathrm{BaSO}_4$

B

On treating compound $\mathbf{P}$ with saturated $\mathrm{NaHCO}_3$ solution, brisk effervescence is observed

C

Compound $\mathbf{P}$ can be prepared by treating benzene with anhydrous $\mathrm{AlCl}_3$ and $\mathrm{CH}_3 \mathrm{COCl}$

D

On treating with bromine water, compound $\mathbf{P}$ gives a white precipitate

Question 5: Palette 5/100

NEET 2026 MCQ

$ \text { The compound that CANNOT be obtained from the aldol condensation reaction shown below, is } $

A

B

C

D

Question 6: Palette 6/100

NEET 2026 MCQ

$ \text { For the following reaction sequence, choose the correct option } $

A

Both $\mathbf{P}$ and $\mathbf{Q}$ are carbonyl compounds

B

If $\mathbf{P}$ is the sodium salt of a carboxylic acid, $\mathbf{Q}$ is a primary alcohol

C

$\mathbf{P}$ and $\mathbf{Q}$ are aromatic compounds

D

If $\mathbf{P}$ gives a carboxylic acid on acidification, $\mathbf{Q}$ gives a poisonous gas on exposure to air and light

Question 7: Palette 7/100

NEET 2025 MCQ

Identify the suitable reagent for the following conversion.

A

(i) $\mathrm{NaBH}_4$, (ii) $\mathrm{H}^{+} / \mathrm{H}_2 \mathrm{O}$

B

$\quad \mathrm{H}_2 / \mathrm{Pd}-\mathrm{BaSO}_4$

C

(i) $\mathrm{LiAlH}_4$, (ii) $\mathrm{H}^{+} / \mathrm{H}_2 \mathrm{O}$

D

(i) $\mathrm{AlH}(\mathrm{iBu})_2$, (ii) $\mathrm{H}_2 \mathrm{O}$

Question 8: Palette 8/100

NEET 2025 MCQ

The correct order of decreasing acidity of the following aliphatic acids is

A

$\mathrm{HCOOH}>\mathrm{CH}_3 \mathrm{COOH}>\left(\mathrm{CH}_3\right)_2 \mathrm{CHCOOH}>\left(\mathrm{CH}_3\right)_3 \mathrm{CCOOH}$

B

$\mathrm{HCOOH}>\left(\mathrm{CH}_3\right)_3 \mathrm{CCOOH}>\left(\mathrm{CH}_3\right)_2 \mathrm{CHCOOH}>\mathrm{CH}_3 \mathrm{COOH}$

C

$\left(\mathrm{CH}_3\right)_3 \mathrm{CCOOH}>\left(\mathrm{CH}_3\right)_2 \mathrm{CHCOOH}>\mathrm{CH}_3 \mathrm{COOH}>\mathrm{HCOOH}$

D

$\mathrm{CH}_3 \mathrm{COOH}>\left(\mathrm{CH}_3\right)_2 \mathrm{CHCOOH}>\left(\mathrm{CH}_3\right)_3 \mathrm{CCOOH}>\mathrm{HCOOH}$

Question 9: Palette 9/100

NEET 2024 MCQ

Select the incorrect reaction among the following :

A

$ \mathrm{CH}_3 \mathrm{COCl} \xrightarrow[\Delta]{\mathrm{H}_2 \mathrm{O}} \mathrm{CH}_3 \mathrm{COOH} $

B

C

$ \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH} \xrightarrow[\text { (i) } \mathrm{H}_3 \mathrm{O}^{\oplus}]{\text { (i) } \mathrm{KMOO}_4 / \mathrm{OH}^{-}} \mathrm{CH}_3 \mathrm{COOH} $

D

$ \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{OH} \xrightarrow{\mathrm{CrO}_3-\mathrm{H}_2 \mathrm{SO}_4} \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{COOH} $

Question 10: Palette 10/100

NEET 2024 MCQ

Identify the correct reagents that would bring about the following transformation.

A

(i) $\mathrm{H}_2 \mathrm{O} / \mathrm{H}^{+}$

(ii) $\mathrm{CrO}_3$

B

(i) $\mathrm{BH}_3$

(ii) $\mathrm{H}_2 \mathrm{O}_2 / \stackrel{\ominus}{\mathrm{O}} \mathrm{H}$

(iii) PCC

C

(i) $\mathrm{BH}_3$

(ii) $\mathrm{H}_2 \mathrm{O}_2 / \stackrel{\ominus}{\mathrm{O}} \mathrm{H}$

(iii) alk. $\mathrm{KMnO}_4$

D

(i) $\mathrm{H}_2 \mathrm{O} / \mathrm{H}^{+}$

(ii) PCC

Question 11: Palette 11/100

NEET 2024 MCQ

Match List I with List II.

	List I (Reaction)		List II (Reagents/Condition)
A.		I.
B.		II.	CrO$_3$
C.		III.	KMnO$_4$/KOH, $\Delta$
D.		IV.	(i) O$_3$ (ii) Zn-H$_2$O

Choose the correct answer from the options given below:

A

A-IV, B-I, C-III, D-II

B

A-III, B-I, C-II, D-IV

C

A-IV, B-I, C-II, D-III

D

A-I, B-IV, C-II, D-III

Question 12: Palette 12/100

NEET 2024 MCQ

For the given reaction:

'P' is

A

B

C

D

Question 13: Palette 13/100

NEET 2023 MCQ

Consider the given reaction:

$\mathrm{CH}_3 \mathrm{COCH}_3 \stackrel{\text { dil } \mathrm{Ba}(\mathrm{OH})_2}{\longrightarrow} \text { ''X" }$

The functional groups present in compound "$\mathrm{X}$" are:

A

ketone and double bond

B

double bond and aldehyde

C

alcohol and aldehyde

D

alcohol and ketone

Question 14: Palette 14/100

NEET 2023 MCQ

Identify 'X' in above reactions

A

B$_2$H$_6$

B

LiAlH$_4$

C

NaBH$_4$

D

H$_2$/Pd

Question 15: Palette 15/100

NEET 2023 MCQ

The following conversion is known as:

A

Stephen reaction

B

Gattermann-Koch reaction

C

Etard reaction

D

Rosenmund reaction

Question 16: Palette 16/100

NEET 2023 MCQ

Reagents which can be used to convert alcohols to carboxylic acids, are

(A) $\mathrm{CrO}_3-\mathrm{H}_2 \mathrm{SO}_4$

(B) $\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7+\mathrm{H}_2 \mathrm{SO}_4$

(C) $\mathrm{KMnO}_4+\mathrm{KOH} / \mathrm{H}_3 \mathrm{O}^{+}$

(D) $\mathrm{Cu}, 573 \mathrm{~K}$

(E) $\mathrm{CrO}_3,\left(\mathrm{CH}_3 \mathrm{CO}\right)_2 \mathrm{O}$

Choose the most appropriate answer from the options given below :

A

(B), (C) and (D) only

B

(B), (D) and (E) only

C

(A), (B) and (C) only

D

(A), (B) and (E) only

Question 17: Palette 17/100

NEET 2023 MCQ

The major product formed in the following conversion is ___________.

A

B

C

D

Question 18: Palette 18/100

NEET 2023 MCQ

Complete the following reaction:

[C] is _______.

A

B

C

D

Question 19: Palette 19/100

NEET 2023 MCQ

Identify the major product obtained in the following reaction:

A

B

C

D

Question 20: Palette 20/100

NEET 2023 MCQ

Identify the final product [D] obtained in the following sequence of reactions.

A

B

C$_4$H$_{10}$

C

$\mathrm{HC} \equiv \mathrm{C}^{\ominus} \mathrm{Na}^{+}$

D

Question 21: Palette 21/100

NEET 2022 MCQ

Which of the following reactions is not an example for nucleophilic addition-elimination reaction?

A

CH₃CHO + NH₃ $\rightleftharpoons$ CH₃CH = NH + H₂O

B

C

CH₃CHO + NH₂OH $\rightleftharpoons$ CH₃CH = N $-$ OH + H₂O

D

CH₃CHO + C₆H₅NHNH₂ $\rightleftharpoons$ CH₃CH = N $-$ NHC₆H₅ + H₂O

Question 22: Palette 22/100

NEET 2022 MCQ

The product formed from the following reaction sequence is

A

B

C

D

Question 23: Palette 23/100

NEET 2022 MCQ

Match List-I with List-II :

	List-I (Reaction)		List-II (Product formed)
(a)	Gabriel synthesis	(i)	Benzaldehyde
(b)	Kolbe synthesis	(ii)	Ethers
(c)	Williamson synthesis	(iii)	Primary amines
(d)	Etard reaction	(iv)	Salicylic acid

Choose the correct answer from the options given below :

A

(a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)

B

(a) - (iii), (b) - (i), (c) - (ii), (d) - (iv)

C

(a) - (ii), (b) - (iii), (c) - (i), (d) - (iv)

D

(a) - (iv), (b) - (iii), (c) - (i), (d) - (ii)

Question 24: Palette 24/100

NEET 2022 MCQ

The incorrect method to synthesize benzaldehyde is

A

B

C

D

Question 25: Palette 25/100

NEET 2022 MCQ

Given below are two statements :

Statement I : The boiling points of aldehydes and ketones are higher than hydrocarbons of comparable molecular masses because of weak molecular association in aldehydes and ketones due to dipole - dipole interactions.

Statement II : The boiling points of aldehydes and ketones are lower than the alcohols of similar molecular masses due to the absence of H-bonding.

In the light of the above statements, choose the most appropriate answer from the given below

A

Both Statement I and Statement II are correct

B

Both Statement I and Statement II are incorrect

C

Statement I is correct but Statement II is incorrect

D

Statement I is incorrect but Statement II is correct

Question 26: Palette 26/100

NEET 2022 MCQ

RMgX + CO₂ $\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{ether}^{dry}} $ Y $\buildrel {{H_3}{O^ + }} \over \longrightarrow $ RCOOH

What is Y in the above reaction?

A

RCOO^$-$Mg⁺X

B

R₃CO^$-$Mg⁺X

C

RCOO^$-$X⁺

D

(RCOO)₂Mg

Question 27: Palette 27/100

NEET 2022 MCQ

Match List-I with List-II.

	List - I (Products formed)		List - II (Reaction of carbonyl compound with)
(a)	Cyanohydrin	(i)	NH$_2$OH
(b)	Acetal	(ii)	RNH$_2$
(c)	Schiff's base	(iii)	Alcohol
(d)	Oxime	(iv)	HCN

Choose the correct answer from the options given below

A

(a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)

B

(a) - (ii), (b) - (iiii), (c) - (iv), (d) - (i)

C

(a) - (i), (b) - (iii), (c) - (ii), (d) - (iv)

D

(a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)

Question 28: Palette 28/100

NEET 2022 MCQ

Compound X on reaction with O₃ followed by Zn/H₂O gives formaldehyde and 2-methyl propanal as products. The compound X is

A

3-Methylbut-1-ene

B

2-Methylbut-1-ene

C

2-Methylbut-2-ene

D

Pent-2-ene

Question 29: Palette 29/100

NEET 2022 MCQ

Which one of the following is not formed when acetone reacts with 2-pentanone in the presence of dilute NaOH followed by heating?

A

B

C

D

Question 30: Palette 30/100

NEET 2021 MCQ

What is the IUPAC name of the organic compound formed in the following chemical reaction?

A

2-methylbutan-2-ol

B

2-methylpropan-2-ol

C

pentan-2-ol

D

pentan-3-ol

Question 31: Palette 31/100

NEET 2021 MCQ

Consider the above reaction and identify the missing reagent/chemical.

A

DIBAL-H

B

B₂H₆

C

Red Phosphorus

D

CaO

Question 32: Palette 32/100

NEET 2021 MCQ

Match List-I with List-II


Choose the correct answer from the options given below.

A

(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

B

(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)

C

(a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)

D

(a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)

Question 33: Palette 33/100

NEET 2021 MCQ

The intermediate compound 'X' in the following chemical reaction is :

A

B

C

D

Question 34: Palette 34/100

NEET 2021 MCQ

The product formed in the following chemical reaction is :

A

B

C

D

Question 35: Palette 35/100

NEET 2020 MCQ

Identify compound X in the following sequence of reactions :

A

B

C

D

Question 36: Palette 36/100

NEET 2020 MCQ

Reaction between benzaldehyde and acetophenone in presence of dilute NaOH is known as :

A

Cannizzaro's reaction

B

Cross Cannizzaro's reaction

C

Cross Aldol condensation

D

Aldol condensation

Question 37: Palette 37/100

NEET 2020 MCQ

Reaction between acetone and methylmagnesium chloride followed by hydrolysis will give :

A

Sec. butyl alcohol

B

Tert. butyl alcohol

C

Isobutyl alcohol

D

Isopropyl alcohol

Question 38: Palette 38/100

NEET 2018 MCQ

Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their

A

formation of intramolecular H-bonding

B

formation of carboxylate ion

C

more extensive association of carboxylic acid via van der Waals’ forces of attraction

D

formation of intermolecular H-bonding.

Question 39: Palette 39/100

NEET 2017 MCQ

Of the following, which is the product formed when cyclohexanone undergoes aldol condensation followed by heating?

A

B

C

D

Question 40: Palette 40/100

NEET 2017 MCQ

Consider the reactions,

Identify A, X, Y and Z.

A

A-Methoxymethane, X-Ethanol,
Y-Ethanoic acid, Z-Semicarbazide.

B

A-Ethanal, X-Ethanol,
Y-But-2-enal, Z-Semicarbazone.

C

A-Ethanol, X-Acetalfehyde,
Y-Butanone, Z-Hydrazone.

D

A-Methoxymethane, X-Ethanoic acid,
Y-Acetate ion, Z-Hydrazine.

Question 41: Palette 41/100

NEET 2016 MCQ

The correct structure of the product 'A' formed in the reaction

A

B

C

D

Question 42: Palette 42/100

NEET 2016 MCQ

The correct order of strengths of the carboxylic acids

is

A

I > II > III

B

II > III > I

C

III > II > I

D

II > I > III

Question 43: Palette 43/100

NEET 2016 MCQ

The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha-carbon, is

A

a carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding enol and this process is known as carbonylation

B

a carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding enol and this process is known as keto-enol tautomerism

C

a carbonyl compound with a hydrogen atom on its alpha-carbon never equilibrates with its corresponding enol

D

a carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding enol and this process is known as aldehyde-ketone equilibration.

Question 44: Palette 44/100

NEET 2016 MCQ

Which of the following reagents would distinguish cis-cyclopenta-1-2-diol from the trans-isomer?

A

MnO₂

B

Aluminimum isopropoxide

C

Acetone

D

Ozone

Question 45: Palette 45/100

NEET 2015 MCQ

Which one of the following esters gets hydrolysed most easily under alkaline conditions?

A

B

C

D

Question 46: Palette 46/100

NEET 2015 MCQ

The oxidation of benzene by V₂O₅ in the presence of air produces

A

maleic anhydride

B

benzoic acid

C

benzaldehyde

D

benzoic anhydride.

Question 47: Palette 47/100

NEET 2015 MCQ

Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is

A

hydrazine in presence of feebly acidic solution

B

hydrocyanic acid

C

sodium hydrogen sulphate

D

a Grignard reagent.

Question 48: Palette 48/100

NEET 2015 MCQ

Treatment of cyclopentanone


with methyl lithium gives which of the following species ?

A

Cyclopentanonyl radical

B

Cyclopentanonyl biradical

C

Cyclopentanonyl anion

D

Cyclopentanonyl cation

Question 49: Palette 49/100

NEET 2015 MCQ

An organic compound 'X' having molecular formula C₅H₁₀O yields phenylhydrazone and gives negative response to the iodoform test and Tollens' test. It produces n-pentane on reduction. 'X' could be

A

3-pentanone

B

n-amyl alcohol

C

pentanal

D

2-pentanone

Question 50: Palette 50/100

NEET 2014 MCQ

Which one is most reactive towards nucleophilic addition reaction?

A

B

C

D

Question 51: Palette 51/100

NEET 2013 MCQ

The order of stability of the following tautomeric compounds is

A

II > I > III

B

II > III > I

C

I > II > III

D

III > II > I

Question 52: Palette 52/100

NEET 2013 MCQ

Reaction by which benzaldehyde cannot be prepared

A

B

C

D

Question 53: Palette 53/100

NEET 2012 MCQ

Consider the reaction :
RCHO + NH₂NH₂ $ \to $ RCH $=$ N $-$ NH₂

What sort of reaction is it?

A

Electrophilic addition-elimination reaction

B

Free radical addition-elimination reaction

C

Electrophilic substitution-elimination reaction

D

Nucleophilic addition-elimination reaction

Question 54: Palette 54/100

NEET 2012 MCQ

Consider the following reaction


The product A is

A

C₆H₅CHO

B

C₆H₅OH

C

C₆H₅COCH₃

D

C₆H₅Cl

Question 55: Palette 55/100

NEET 2012 MCQ

CH₃CHO and C₆H₅CH₂CHO can be distinguished chemically by

A

Benedict's test

B

Iodoform test

C

Tollen's reagent test

D

Fehling's solution test

Question 56: Palette 56/100

NEET 2012 MCQ

Predict the products in the given reaction.

A

B

C

D

Question 57: Palette 57/100

NEET 2012 MCQ

Acetone is treated with excess of ethanol in the presence of hydrochloric acid. The product obtained is

A

B

C

D

Question 58: Palette 58/100

NEET 2012 MCQ

The correct order of decreasing acid strength of trichloroacetic acid (A), trifluoroacetic acid (B), acetic acid (C) and formic acid (D) is

A

B > A > D > C

B

B > D > C > A

C

A > B > C > D

D

A > C > B > D

Question 59: Palette 59/100

NEET 2012 MSQ

Which of the following compounds will give a yellow precipitate with iodine and alkali?

A

Acetophenone

B

Methyl acetate

C

Acetamide

D

2-Hydroxypropane

Question 60: Palette 60/100

NEET 2011 MCQ

An organic compound A on treatment with NH₃ gives B, which on heating gives C. C when treated with Br₂ in the presence of KOH produces ethyl amine. Compound A is

A

CH₃COOH

B

CH₃CH₂CH₂COOH

C

D

CH₃CH₂COOH

Question 61: Palette 61/100

NEET 2011 MCQ

The order of reactivity of phenyl magnesium bromide (PhMgBr) with the following compounds:

A

III > II > I

B

II > I > III

C

I > III > II

D

I > II > III

Question 62: Palette 62/100

NEET 2011 MCQ

Match the compounds given in List-I with List-II and select the suitable option using the code given below.

List-I		List-II
(A)	Benzaldehyde	(i)	Phenolphthalein
(B)	Phthalic anhydride	(ii)	Benzoin condensation
(C)	Phenyl benzoate	(iii)	Oil of wintergreen
(D)	Methyl salicylate	(iv)	Fries rearrangement

A

(A)-(iv),  (B)-(i),  (C)-(iii),  (D)-(ii)

B

(A)-(iv),  (B)-(ii),  (C)-(iii),  (D)-(i)

C

(A)-(ii),  (B)-(iii),  (C)-(iv),  (D)-(i)

D

(A)-(ii),  (B)-(i),  (C)-(iv),  (D)-(iii)

Question 63: Palette 63/100

NEET 2011 MCQ

Clemmensen reduction of a ketone is carried out in the presence of which of the following?

A

Glycol with KOH

B

Zn-Hg with HCl

C

LiAlH₄

D

H₂ and Pt as catalyst

Question 64: Palette 64/100

NEET 2011 MCQ

In a set of reactions m-bromobenzoic acid gave a product D. Identify the product D.

A

B

C

D

Question 65: Palette 65/100

NEET 2011 MCQ

Which one is a nucleophilic substitution reaction among the following ?

A

B

C

D

Question 66: Palette 66/100

NEET 2010 MCQ

Which one of the following compounds will be most readily dehydrated?

A

B

C

D

Question 67: Palette 67/100

NEET 2010 MCQ

Which of the following reactions will not result in the formation of carbon-carbon bonds?

A

Reimer-Tiemann reaction

B

Cannizzaro reaction

C

Wurtz reaction

D

Friedel-Crafts acylation

Question 68: Palette 68/100

NEET 2010 MCQ

Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is

A

CH₃COOCH₃

B

CH₃CONH₂

C

CH₃COOCOCH₃

D

CH₃COCl

Question 69: Palette 69/100

NEET 2009 MCQ

Trichloroacetaldehyde, CCl₃CHO reacts with chlorobenzene in presence of sulphuric acid and produces

A

B

C

D

Question 70: Palette 70/100

NEET 2009 MCQ

Propionic acid with Br₂/P yields a dibromo product. Its structure would be

A

B

CH₂(Br) $-$ CH₂ $-$ COBr

C

D

CH₂(Br) $-$ CH(Br) $-$ COOH

Question 71: Palette 71/100

NEET 2008 MCQ

A strong base can abstract an $\alpha $-hydrogen from

A

ketone

B

alkane

C

alkene

D

amine

Question 72: Palette 72/100

NEET 2008 MCQ

The relative reactivities of acyl compounds towards nucleophilic substitution are in the order of

A

Acid anhydride > Amide > Ester > Acyl chloride

B

Acyl chloride > Ester > Acid anhydride > Amide

C

Acyl chloride > Acid anhydride > Ester > Amide

D

Ester > Acyl chloride > Amide > Acid anhydride.

Question 73: Palette 73/100

NEET 2008 MCQ

Acetophenone when reacted with a base, C₂H₅ONa,   yields a stable compound which has the structure

A

B

C

D

Question 74: Palette 74/100

NEET 2007 MCQ

Which of the following represents the correct order of the acidity in the given compounds ?

A

FCH₂COOH > CH₃COOH > BrCH₂COOH > ClCH₂COOH

B

BrCH₂COOH > ClCH₂COOH > FCH₂COOH > CH₃COOH

C

FCH₂COOH > ClCH₂COOH > BrCH₂COOH > CH₃COOH

D

CH₃COOH > BrCH₂COOH > ClCH₂COOH > FCH₂COOH

Question 75: Palette 75/100

NEET 2007 MCQ

Reduction of aldehydes and ketones into hydrocarbons using zinc amalgam and conc. HCl is called

A

Cope reduction

B

Dow reduction

C

Wolf-Kishner reduction

D

Clemmensen reduction

Question 76: Palette 76/100

NEET 2007 MCQ

Which one of the following on treatment with 50% aqueous sodium hydroxide yields the corresponding alcohol and acid?

A

C₆H₅CHO

B

CH₃CH₂CH₂CHO

C

D

C₆H₅CH₂CHO

Question 77: Palette 77/100

NEET 2007 MCQ

Consider the following compounds

The correct decreasing order of their reactivity towards hydrolysis is

A

(i) > (ii) > (iii) > (iv)

B

(iv) > (ii) > (i) > (iii)

C

(ii) > (iv) > (i) > (iii)

D

(ii) > (iv) > (iii) > (i)

Question 78: Palette 78/100

NEET 2007 MCQ

The product formed in Aldol condensation is

A

a beta-hydroxy aldehyde or a beta-hydroxy ketone

B

an alpha-hydroxy aldehyde or ketone

C

an alpha, beta unsaturated ester

D

a beta-hydroxy acid.

Question 79: Palette 79/100

NEET 2006 MCQ

Nucleophilic addition reaction will be most favoured in

A

CH₃CHO

B

C

(CH₃)₂C $=$ O

D

CH₃CH₂CHO

Question 80: Palette 80/100

NEET 2006 MCQ

Self condensation of two moles of ethyl acetate in presence of sodium ethoxide yields

A

ethyl propionate

B

ethyl butyrate

C

acetoacetic ester

D

methyl acetoacetate

Question 81: Palette 81/100

NEET 2006 MCQ

In a set of reactions propionic acid yielded a compound D.

The structure of D would be

A

CH₃CH₂NH₂

B

CH₃CH₂CH₂NH₂

C

CH₃CH₂CONH₂

D

CH₃CH₂NHCH₃

Question 82: Palette 82/100

NEET 2006 MCQ

A carbonyl compound reacts with hydrogen cyanide to form cyanohydrin which on hydrolysis forms a racemic mixture of $\alpha $-hydrixy acid. The carbonyl compound is

A

formaldehyde

B

acetaldehyde

C

acetone

D

diethyl ketone

Question 83: Palette 83/100

NEET 2005 MCQ

In a set of reactions acetic acid yielded a product D.

The structure of D would be

A

B

C

D

Question 84: Palette 84/100

NEET 2005 MCQ

The major organic product formed from the following reaction :


is

A

B

C

D

Question 85: Palette 85/100

NEET 2004 MCQ

The $-$ OH group of an alcohol or the $-$ COOH group of a carboxylic acid can be replaced by $-$ Cl using

A

phosphorus pentachloride

B

hypochlorous acid

C

chlorine

D

hydrochloric acid

Question 86: Palette 86/100

NEET 2004 MCQ

Which one of the following can be oxidised to the corresponding carbonyl compound?

A

2-Hydroxypropane

B

ortho-Nitrophenol

C

Phenol

D

2-Methyl-2-hydroxypropane

Question 87: Palette 87/100

NEET 2003 MCQ

In a set of the given reactions, acetic acid yielded a product C.

Product $C$ would be

A

CH₃CH(OH)C₂H₅

B

CH₃COC₆H₆

C

CH₃CH(OH)C₆H₅

D

Question 88: Palette 88/100

NEET 2003 MCQ

When $m$-chlorobenzaldehyde is treated with 50% KOH solution, the product(s) obtained is (are)

A

B

C

D

Question 89: Palette 89/100

NEET 2003 MCQ

$A$ and $B$ in the following reactions are :

A

B

C

D

Question 90: Palette 90/100

NEET 2003 MCQ

In this reaction :
CH₃CHO + HCN $ \to $ CH₃CH(OH)CN
           $\buildrel {HOH} \over \longrightarrow $ CH₃CH(OH)COOH
an asymmetric centre is generated. The acid obtained would be

A

$D$-isomer

B

$L$-isomer

C

50% $D$ + 50% $L$-isomer

D

20% $D$ + 80% $L$-isomer

Question 91: Palette 91/100

NEET 2002 MCQ

In the above reaction product P is

A

B

C

D

Question 92: Palette 92/100

NEET 2002 MCQ

In the following reaction product $P$ is

A

RCH₂OH

B

RCOOH

C

RCHO

D

RCH₃

Question 93: Palette 93/100

NEET 2002 MCQ

are

A

resonating structures

B

tautomers

C

geometrical isomers

D

optical isomers.

Question 94: Palette 94/100

NEET 2001 MCQ

Which of the following is incorrect?

A

FeCl₃ is used in detection of phenol.

B

Fehling solution is used in detection of glucose

C

Tollen's reagent is used in detection of unsaturation.

D

NaHSO₃ is used in detection of carbonyl compound.

Question 95: Palette 95/100

NEET 2001 MCQ

Which of the following give positive Fehling solution test?

A

Sucrose

B

Glucose

C

Fats

D

Protein

Question 96: Palette 96/100

NEET 2001 MCQ

Which alkene on ozonolysis gives CH₃CH₂CHO and CH₃COCH₃?

A

B

CH₃CH₂CH $=$ CHCH₂CH₃

C

CH₃CH₂CH $=$ CHCH₃

D

Question 97: Palette 97/100

NEET 2000 MCQ

Polarisation in acrolein can be described as

A

B

C

D

Question 98: Palette 98/100

NEET 2000 MCQ

First product of the reaction between RCHO and NH₂NH₂ is

A

RCH $=$ NNH₂

B

RCH $=$ NH

C

RCH₂NH₂

D

RCON₃

Question 99: Palette 99/100

NEET 2000 MCQ

Reduction by LiAlH₄ of hydrolysed product of an ester gives

A

two alcohols

B

two aldehydes

C

one acid and one alcohol

D

two acids.

Question 100: Palette 100/100

NEET 2000 MCQ

Benzoic acid may be converted into ethyl benzoate by reaction with :

A

ethyl alcohol

B

ethyl alcohol and dry HCl

C

ethyl chloride

D

sodium ethoxide.