Alcohols Phenols and Ethers Test

Result

Alcohols Phenols and Ethers Test - 68

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Weekly Quiz Competition

Question 1
1 / -0

$$(CH_3)_2CHCH_2C \equiv N\xrightarrow[Heat]{HCl,H_2O} A \xrightarrow[II.H_2O]{I.LiAlH_4} B \xrightarrow [CH_2Cl_2]{PCC} C$$. The compound 'C' is:

A
$$(CH_3)_2 CH-{\overset{O}{\overset{||}C}} CH_3$$

B
$$(CH_3)_2 CHCH_2{\overset{O}{\overset{||}C}}H$$

C
$$(CH_3)_2 CHCH_2{\overset{O}{\overset{||}C}}OH$$

D
$$(CH_3)_2 CH{\overset{O}{\overset{||}C}} - CH_2OH$$

Solution
Question 2
1 / -0

Consider the following sequence of reactions:
$${ C }_{ 2 }{ H }_{ 5 }-C\equiv CH\xrightarrow { { CH }_{ 3 }MgBr } (A)\xrightarrow [ HCHO ]{ { H }_{ 2 }{ O } } (B)$$
The product (B) is:

A
$${ CH }_{ 3 }{ CH }_{ 2 }OH$$

B
$$C_2H_5 - \underset{\!\!CH_3}{\underset{|}{C}=} \,CH - CH_2OH$$

C
$$C_2H_5 - C \equiv C - \underset{\!\!OH}{\underset{|}{C}H} - CH_3$$

D
$${ C }_{ 2 }{ H }_{ 5 }-C\equiv C-{ CH }_{ 2 }OH$$

Solution
Question 3
1 / -0

What will be product in given reaction?

A

B

C

D

Solution
Question 4
1 / -0

In the reaction sequence

The product 'B' is

A

B

C

D
Question 5
1 / -0

Adipic acid $$\xrightarrow {P_2O_2 \triangle}{-CO_2-H-2O}A\xrightarrow {dil OH}{\triangle} B$$
The compound B can be:

A

B

C

D

Solution

Option B is the correct answer.
Adipic acid undergoes dehydration followed by decarboxylation to form Cyclopentanone. This Cyclopentanone then undergoes Aldol condensation to form the product shown in the figure.
Question 6
1 / -0

In the reaction $$CH_3CH_2ONa + CH_3CH_2OSO_2CH_3 \xrightarrow[heat]{THF}$$ the product formed is

A
$$CH_3CH_2OCH_3$$

B
$$CH_3CH_2OCH_2CH_3$$

C
$$CH_3CH_2OSO_2OCH_2CH_3$$

D
$$CH_3CH_2OSO_2OCH_3$$

Solution
Question 7
1 / -0

$$0.234g$$ of an organic compound containing nitrogen was Kjeldahlized and ammonia gas evolved was absorbed in $$90.3mL$$ of $$\cfrac{1}{10}N$$ $$HCl$$. Unused acid required $$20mL$$ of $$0.2N$$ $$NaOH$$ for complete neutralization. The percentage of nitrogen in the sample is:

A
$$30.12$$%

B
$$3.012$$%

C
$$60.24$$%

D
$$6.024$$%

Solution
Question 8
1 / -0

If the boiling point of ethanol (molecular weight= 46) is $$78^oC$$, what is the boiling point of diethyl ether (molecular weight = 46)?

A
$$100^{o}C$$

B
$$78^{o}C$$

C
$$86^{o}C$$

D
$$34^{o}C$$

Solution
Question 9
1 / -0

Dehydration of following alcohols will be in order :

A
$$1<2<3<4$$

B
$$4>3>1>2$$

C
$$4<2<1<3$$

D
$$1>3>4>2$$

Solution
Question 10
1 / -0

Structure of $$C_3H_7Br$$ should be

A

B

C
Both of these

D
None of these

Solution