Alcohols Phenols and Ethers Test

Result

Alcohols Phenols and Ethers Test - 45

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Weekly Quiz Competition

Question 1
1 / -0

$$A$$ & $$B$$ respectively:

A

B

C

D

Solution

Refer to Image.
Firstly hydroxylation reaction occurs in presence of $$H_2O_2$$ to give syn-diol then, Pinacol-pinacolone reaction occurs in an acidic medium in which ring expansion occurs.
Question 2
1 / -0

$$CH_3 - CH_2 - OH\mathop \to \limits^{PCl_3 } P\mathop \to \limits_\Delta ^{alc.KOH} Q$$
'Q' is:

A
$$

H_2 C = CH_2

$$

B
$$

CH_3 - CH_2 - OH

$$

C

D
$$

CH_3 - CH_2 - Cl

$$

Solution

$$CH_3-CH_2-OH\longrightarrow CH_3-CH_2-Cl\longrightarrow CH_2=CH_2+HCl$$
chlorination reaction followed by elimination.
Question 3
1 / -0

Which of the following procedures would be best for the preparation of phenyl benzyl ether?
$$C_6H_5OCH_2C_6H_5$$.

A
$$C_6H_5Cl+C_6H_5H_2O^{(-)}Na^{(+)}$$

B
$$C_6H_5O^{(-)}Na^{(+)}+C_6H_5CH_2Cl$$

C
$$2C_6H_5Cl+Na_2O$$

D
$$2C_6H_5MgBr+CH_2O$$

Solution

Phenyl benzyl ether is being formed in the above reaction phenyl benzyl ether is a reactive organic oxygenate containing ether asa a functional group chlobenzene solution to afford a mixture of phenol o benzyl phenol & dichlorodiphenylmethane
Question 4
1 / -0

The product of acid catalyzed hydration of $$2-phenylpropene$$ is:

A
$$3-phenyl-2-propanol$$

B
$$1-phenyl-2-propanol$$

C
$$2-phenyl-2-propanol$$

D
$$2-phenyl-1-propanol$$

Solution
Question 5
1 / -0

An organic compound having the molecular formula $$C_8H_{10}O$$ on being heated with $$I_2$$ and dilute NaOH gives a yellow precipitate. The expected compound is?

A
$$C_6H_5CH_2CH_2OH$$

B

C

D

Solution

organic compound with the molecular formula of $$C_8H_{10}O$$ which on being heated with $$I_2$$ and dilute $$NaOH$$ gives a yelow precipitate is in the diagram.
basically acetyle group $$CH_3-C=O$$ containing compounds and $$CH_3-CH-OH$$ group containing compounds will give yellow ppt.($$CHI_3$$ iodoform) with $$I_2$$ and $$OH$$. this is iodoform test.
Question 6
1 / -0

The structure of the product formed in the reaction given below is :

A

B

C

D

Solution

In Pinacol-Pinacolone Rearrangement, geminal diols are converted to fused ring carbonyl compounds.
Question 7
1 / -0

The conversation of m- nitrophenol to resorcinol involves _________ respectively.

A
hydrolysis, diasotisation and reduction

B
diasotisation, reduction and hydrolysis

C
hydrolysis, reduction and diazotisation

D
reduction,diazotisation and hydrolysis

Solution
Question 8
1 / -0

Which of the following species show maximum volatility?

A
$$CH_3CH_2OH$$

B
$$CH_3-O-CH_3$$

C
$$H_2O$$

D
$$HF$$

Solution

Due to the lack of any Hydrogen bonding in case of $$CH_3-O-CH_3$$, its boiling point is comparatively low. In other words, it is the most volatile among the given compounds.
Hence, Option B is correct.
Question 9
1 / -0

What is its IUPAC name?

$$CH_3-\underset{\displaystyle CH_3}{\underset{|}{CH}}-CH_2-OH$$.

A
2-methyl propanol

B
2-ethyl ethanol

C
3-methyl propanol

D
3-ethyl ethanol

Solution

$$\overset{3}{C}H_3-\overset{2}{\underset{CH_3}{\underset{|}{CH}}}-\overset{1\,\,\,\,\,}{CH_2}-OH$$
2-Methyl propanol.
Question 10
1 / -0

On boiling with concentrated hydrobromic acid, phenyl ethyl ether will yield:

A
phenol and ethyl bromide

B
phenol and ethane

C
bromobenzene and ethanol

D
bromobenzene and ethane

Solution

On boiling with concentrated hydrobromic acid, phenyl ethyl ether will yield phenol and ethyl bromide.
Hence, option $$A$$ is correct.