In the reaction sequence RCOCl + H 2 ⟶ Pd + BaSO 4 A ⟶ HCN B ⟶ H , O ⊕ C A , B and C are given by the set :-

RCHO , RCH ( OH ) CN , RCH ( OH ) COOH

RCHO , RCH ( OH ) CN , RCH ( OH ) CH 2 NH 2

RCHO , R - CH 2 - CN , R - CH 2 - COOH

In the reaction sequence A , B and C are given by the set :-

CH 3 COCH 3 , CCl 3 - C | CH 3 2 , CHI 3 OH

CH 3 CH 2 CHO , CH 3 CH 2 CH 2 Cl , CHI 3

CH 3 COCH 3 , CCl 3 - C O | | - CH 3 , CHI 3

CH 3 CH 2 CHO , CCl 3 - C | H - CH 2 - CH 3 , CHI 3 OH

Match the reactions given in column-I with the suitable reagent given in column-II column-I column-II (i) Benzophenone → Diphenylmethane (a) LiAlH 4 (ii) Benzaldehyde → 1 -Phenyl ethanol (b) Dibal - H (iii) Cyclohexanone → Cyclohexanol (c) Zn ( Hg ) / conc. H Cl (iv) Phenylbenzoate → Benzaldehyde (d) CH 3 MgBr

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

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

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

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

The reagents A and B in the reaction sequence are given by the set :-

CH 3 CH 3 - C | | - OH 2 , H 2 N - NH 2 CH 3

CH 3 - C | H - OH , H 2 N - NH 2 CH 3

CH 3 - C | H - OH , H 2 N - OH CH 3

CH 3 CH 3 - C | | - OH , H 2 N - OH CH 3

E M B I B E

Beta Question Bank for Medical: Chemistry>Chapter 25 - Aldehydes, Ketones and Carboxylic Acids>EXERCISE-II (Previous Year Questions)>Q 34

MEDIUM

NEET

IMPORTANT

Earn 100

A carbonyl compound gives a positive iodoform test but does not reduce Tollen's reagent or Fehling's solution. It forms a cyanohydrin with $HCN$ , which on hydrolysis gives a hydroxy acid with a methyl side chain. The compound is :-

50% studentsanswered this correctly

Important Questions on Aldehydes, Ketones and Carboxylic Acids

MEDIUM

NEET

IMPORTANT

Beta Question Bank for Medical: Chemistry>Chapter 25 - Aldehydes, Ketones and Carboxylic Acids>EXERCISE-II (Previous Year Questions)>Q 35

Which of the following statement is wrong :

MEDIUM

NEET

IMPORTANT

Beta Question Bank for Medical: Chemistry>Chapter 25 - Aldehydes, Ketones and Carboxylic Acids>EXERCISE-II (Previous Year Questions)>Q 36

In the reaction sequence

RCOCl + H_{2} \overset{Pd + {BaSO}_{4}}{⟶} A \overset{HCN}{⟶} B \overset{H, O^{\oplus}}{⟶} C

A, B

and

C

are given by the set :-

MEDIUM

NEET

IMPORTANT

Beta Question Bank for Medical: Chemistry>Chapter 25 - Aldehydes, Ketones and Carboxylic Acids>EXERCISE-II (Previous Year Questions)>Q 37

In the reaction sequence

Question Image

$A, B$ and $C$ are given by the set :-

MEDIUM

NEET

IMPORTANT

Beta Question Bank for Medical: Chemistry>Chapter 25 - Aldehydes, Ketones and Carboxylic Acids>EXERCISE-II (Previous Year Questions)>Q 38

Match the reactions given in column-I with the suitable reagent given in column-II

	column-I		column-II
(i)	Benzophenone $\to$ Diphenylmethane	(a)	${LiAlH}_{4}$
(ii)	Benzaldehyde $\to 1$ -Phenyl ethanol	(b)	$Dibal - H$
(iii)	Cyclohexanone $\to$ Cyclohexanol	(c)	$Zn (Hg) / conc. H Cl$
(iv)	Phenylbenzoate $\to$ Benzaldehyde	(d)	${CH}_{3} MgBr$

HARD

NEET

IMPORTANT

Beta Question Bank for Medical: Chemistry>Chapter 25 - Aldehydes, Ketones and Carboxylic Acids>EXERCISE-II (Previous Year Questions)>Q 39

The reagents $A$ and $B$ in the reaction sequence

Question Image are given by the set :-

MEDIUM

NEET

IMPORTANT

Beta Question Bank for Medical: Chemistry>Chapter 25 - Aldehydes, Ketones and Carboxylic Acids>EXERCISE-II (Previous Year Questions)>Q 40

{CH}_{3} {CH}_{2} {CH}_{2} - C \equiv N \overset{H_{3} O^{\oplus}}{\to} A \to_{Δ}^{{NH}_{3}} B

Product

' B'

is:-

MEDIUM

NEET

IMPORTANT

Beta Question Bank for Medical: Chemistry>Chapter 25 - Aldehydes, Ketones and Carboxylic Acids>EXERCISE-II (Previous Year Questions)>Q 41

Sodium ethoxide has reacted with ethanoyl chloride. The compound that is produced in the above reaction is

MEDIUM

NEET

IMPORTANT

Beta Question Bank for Medical: Chemistry>Chapter 25 - Aldehydes, Ketones and Carboxylic Acids>EXERCISE-II (Previous Year Questions)>Q 42

Trichloroacetaldehyde was subjected to the Cannizzaro's reaction by using

NaOH

. The mixture of the products contain sodium trichloroacetate ion and another compound. The other compound is :

Learn and Prepare for any exam you want !

|

|

|

|

|

|

|

|

A carbonyl compound gives a positive iodoform test but does not reduce Tollen's reagent or Fehling's solution. It forms a cyanohydrin with HCN, which on hydrolysis gives a hydroxy acid with a methyl side chain. The compound is :-

Important Questions on Aldehydes, Ketones and Carboxylic Acids

Learn and Prepare for any exam you want !

A carbonyl compound gives a positive iodoform test but does not reduce Tollen's reagent or Fehling's solution. It forms a cyanohydrin with $HCN$ , which on hydrolysis gives a hydroxy acid with a methyl side chain. The compound is :-