Aldehydes Ketones and Carboxylic Acids Test

Result

Aldehydes Ketones and Carboxylic Acids Test - 27

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Weekly Quiz Competition

Question 1
1 / -0

Which of the Following reagents give reductive addition reaction to aldehyde and ketone ?

A
$$LiAlH_4$$

B
$$NaBH_4$$

C
Both A and B

D
None of them

Solution
Question 2
1 / -0

A major constituent of vinegar is:

A
Methanoic acic

B
Benzoic acid

C
Ethanoic acid

D
Picric acid

Solution

The main constituent of vinegar is acetic acid. The other constituents will depend on the nature of the raw material that has undergone fermentation.
Hence, option $$C$$ is correct.
Question 3
1 / -0

Manufacture of nylon$$-6,6$$ uses:

A
hexanoic acid

B
pentanoic acid

C
hexanedioic acid

D
acetic acid

Solution

Nylon$$-6,6$$ is prepared from adipic acid and hexamethylene diamine condensation reaction.
Question 4
1 / -0

On acid hydrolysis, propane nitrile gives :

A
Propanal

B
Acetic acid

C
Propionamide

D
Propanoic acid

Solution

On hydrolysis, propanenitrile gives propanoic acid.
Question 5
1 / -0

Number of moles of oxygen that one mole of benzoic acid uses in the production of phenol by oxidative decarboxylation?

A
$$3/2$$

B
$$1$$

C
$$1/2$$

D
$$2$$

Solution

Benzoic acid is mainly consumed in the production of phenol by oxidative decarboxylation at $$300-400^0$$ C:
$$C_6H_5CO_2H + 1/2O_2 \longrightarrow C_6H_5OH + CO_2$$
Question 6
1 / -0

A major constituent of vinegar is:

A
methanoic acid

B
benzoic acid

C
ethanoic acid

D
picric acid

Solution

The major constituent of vinegar is acetic acid; the other constituents will depend on the nature of the raw material that has undergone fermentation.
Question 7
1 / -0

Soaps and detergent industries uses:

A
lower fatty acids

B
higher fatty acids

C
esters

D
alcohols

Solution

Soaps and detergents are the sodium salt of higher fatty acids. Hence higher fatty acids are used by industries for the preparation of soaps and detergents.
Question 8
1 / -0

Which is a common standard for calibrating a bomb calorimeter in teaching laboratories?

A
Acetic acid

B
Benzoic acid

C
Picric acid

D
Phenol

Solution

In teaching laboratories, benzoic acid is a common standard for calibrating a bomb calorimeter.
Question 9
1 / -0

The IUPAC name of the compound is:

A
2,4-dimethylpentanoic acid

B
2,3-dimethylpentanoic acid

C
1,4-dimethylpentanoic acid

D
3,4-dimethylpentanoic acid

Solution

The given hydrocarbon has five carbon atoms in its parent chain and a $$ -COOH $$ functional group. if we start numbering the chain from right hand side so that the substitute comes closer to first carbon then the two methyl group come on second and fourth position respectively. Hence, the name 2,4-dimethylpentanoic acid.
Question 10
1 / -0

Reduction reactions of carbonyl compounds is known to be :

A
nucleophilic addition

B
nucleophilic substitution

C
addition reaction

D
elimination reaction

Solution

The carbonyl compounds undergo nucleophilic addition reactions. Reduction reactions are also a nucleophilic addition.