Alcohols Phenols and Ethers Test

Result

Alcohols Phenols and Ethers Test - 27

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Weekly Quiz Competition

Question 1
1 / -0

Identify the final product in the following sequence of reactions.

A
$$CH_3CH(CH_{(c)})COOH$$

B
$$CH_3CH_2CH_2CH_2OH$$

C
$$CH_3CH_2CH_2COOH$$

D
$$CH_3CH_2COOH
$$

Solution
Question 2
1 / -0

The structure of compound P is :

A

B

C

D

Solution
Question 3
1 / -0

The IUPAC name of $$CH_{3} - C(CH_{3}) (OH) CH_{2} - CH (CH_{3})_2$$ is:

A
2,4-Dimethylpentan-2-ol

B
2,4-dimethylpentan-4-ol

C
2,2-dimethylbutane

D
2,4,4-trimethylbutan-2-ol

Solution

In the longest carbon chain, $$-OH$$ group is closest to the left-hand side, therefore we number from the left-hand side. There is 5 carbon in the longest chain, in second and fourth positions methyl group is attached and in second position there is an alcoholic group. Thus IUPAC name is 2,4-Dimethyl pentan-2-ol.
Question 4
1 / -0

Trivial name of methanol is _________ .

A
wood spirit

B
methyl alcohol

C
wood alcohol

D
all of the above

Solution

Methanol is known as methyl alcohol, wood alcohol, wood naphtha or wood spirit because it was once produced as a byproduct of the destructive distillation of wood.
Question 5
1 / -0

Phenol reacts with bromine water in carbon disulphate at low temperature to give

A
o-bromophenol

B
o- and p-bromophenols

C
p-bromophenol

D
2, 4, 6-tribromophenol

Solution

$$-OH$$ is ring activating group because it is electron-donating so it is ortho and para director with compound $$o-$$ and $$p-bromophenols$$
Question 6
1 / -0

Hydrolysis of an ester gives acid A and alcohol B. The acid reduces Fehlings solution. Oxidation of alcohol B gives acid A. The ester is:

A
Mehthyl formate

B
Ethyl formate

C
Methyl acetate

D
Ethyl acetate

Solution

A
A:- HCOOH
B:- $$CH_{3}OH$$
Therefore the ester is $$HCOOCH_{3}$$
Question 7
1 / -0

The major product obtained in the reaction $$C{H_3}C{H_2}C \equiv CH\xrightarrow[{{H_2}O}]{{H{g^{ 2 + }},{H_3}{O^ + }}}$$ is:

A
$$CH_3CH_2CH_2CH(OH)_2$$

B
$$CH_3CH_2CH = CHOH$$

C
$$CH_3CH_2CH_2CHO$$

D
$$CH_3CH_2COCH_3$$

Solution
Question 8
1 / -0

Identify E :

A

B

C

D

Solution
Question 9
1 / -0

Which of the following is used as freezing mixture?

A
Mixture of ether and liquid $$CO_{2}$$

B
Mixture of ether and ethyl alcohol

C
Mixture of ether and dry ice

D
Mixture of ethyl alcohol and dry ice

Solution

A mixture of dry ice and solvents such as acetone, alcohol or ether acts as a freezing mixture.

Option C is correct.
Question 10
1 / -0

Which of the following is used in the manufacture of ethanol?

A
$$C_{2} H_{6}$$

B
$$C_{2}H_{2}$$

C
$$CH_{4}$$

D
$$C_{2}H_{4}$$

Solution

Alcohols can be prepared by the hydration of alkenes. Therefore, ethanol( $$C_{2}H_{5}OH$$) can be prepared from the corresponding alkene; $$C_{2}H_{4}$$ as:
$$CH_{2}=CH_{2} + H_{2}O \overset{H^{+}}{\rightarrow} CH_{3}CH_{2}OH$$