Aldehydes, Ketones & Carboxylic Acids - Live Session

1.

In the reaction, the product (X) is :
(1)
(2)
(3)
(4)

2.

Rank the following in oreder of increasing value of the equilibrium constant for
hydration K $_{h y d}$ . (Smallest value first).
$O$
$| |$
$(C H$ ₃)3CCC(CH₃)3
1. 1<2<3
2. 3<1<2
3. 2<1<3
4. 2<3<1

3.

Above conversion can be achieved by
1. $Z n (H g), H C I$
2. $N H_{2} - N H_{2} / K O H / ∆$
3. $L i A I H_{4}$
4. $H_{2} / N i$

4.

Compounds (x) in the above reaction is:
1.
2.
3.
4.

5.

Product(A) is
1.
2.
3.
4.

6.

$C H_{3} - C = C H \to_{d i l H_{2} S O_{4}}^{H g S O_{4}} (A)$
$C H_{3} - C = C H \to_{(2) H_{2} O_{2} / H O^{-}}^{(1) B H_{3} T H F} (B)$
Product (A) and (B) is differentiated by
1. 2-4-DNP
2. NaOI
3. Na-metal
4. NaHSO $_{3}$

7.

Product(A) of the reaction is
1.
2.
3.
4.

8.

Compound A (molecular formula $C_{3} H_{8} O)$ is treated with acidified potassium dichromate to form a product B(molecular formula $C_{3} H_{6} O$ ). B forms a shining silver mirror on
warming with ammonica silver nitrate, B when treated with an aqueous solution of NH $_{2}$
NHCONH $_{2}$ and sodium acetate gives a product and sodium acetate gives a product C.
Identify the structure of C.
1. $C H_{3} C H_{2} C H = N N H C O N H_{2}$
2.
$C H_{3} C = N H H C O N H_{2}$
$|$
$C H_{3}$
3. $C H_{3} C = N C O H N H N H_{2}$
$|$
$C H_{3}$
4. $C H_{3} C H_{2} C H = N C O N H N H_{2}$

9.

Compound $(A)$ will be
(1) $P h - C \equiv C - C \equiv C - C H O$
(2) $P h - C \equiv C - CH= C H - C H O$
(3) $P h - C= CH - C \equiv C - C H O$
(4) $_{2}$

10.

Product(B) is
1.
2.
3.
4.

11.

Carbonyl group undergoes:
1. Electrophilic addition reactions
2. Nucleophilic addition reactions
3. Both (1) and (2)
4. None of the above

12.

Formaldehyde is not used in:
(1) adhesives
(2) bakelite
(3) tooth powders
(4) explosives

13.

Identify the compound that on Aldol condensation followed by dehydration gives methyl vinyl ketone.
1. Methanal and ethanal
2. Two moles of formaldehyde
3. Methanal and propanone
4. Two moles of ethanal

14.

The reagent with which both acetaldehyde and acetone react easily is:
(1) Fehling's solution
(2) Grignard reagent
(3) Schiff's reagent
(4) Tollens reagent

15.

Formaldehyde can be distinguished from acetaldehyde by the use of:
(1) Schiff's reagent
(2) Tollens reagent
(3) Fehling's solution
(4) NaOH and iodine

16.

Dry distillation of barium salt of Hexane-1,2-dicarboxylic acid gives:
1.
2.
3.
4.

17.

In the reaction, P is:

1. $C H_{3} C O C H O$
2. $C H_{3} C O O C H_{3}$
3. $C H_{3} C O C H_{2} O H$
4. none of these

18.

Compound (A) $C_{5} H_{10} O$ forms a phenyl hydrazone and gives negative Tollen's and iodoform tests. Compound (A) on reduction gives n-pentane. Compound (A) is:
(1) A primary alcohol
(2) An aldehyde
(3) A ketone
(4) A secondary alcohol

19.

Identify Z in the series,

(1) $C H_{3} . C O . C H_{2} C O O N a$
(2) $(C H$ ₃CO)2O
(3) $C H_{2} C l . C O . O . C O C H_{3}$
(4) $C H C l_{2} . C O . O . C O C H_{3}$