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ALCOHOLS, PHENOLS AND ETHER

15013 Cresols are

1 Hydroxy toluenes

2 Dihydric phenols

3 Trihydric phenols

4 Trihydric alcohols

ALCOHOLS, PHENOLS AND ETHER

15159 In reaction of alcohols with alkali metal, acid etc. which of the following alcohol will react fastest

1 Secondary

2 Tertiary

3 Primary

4 All equal

Explanation:

(c)Order of reactivity with alkali metal (e.g.-Sodium) follows the order $1^{o} > 2^{o} > 3^{o}$ .

ALCOHOLS, PHENOLS AND ETHER

15014 Carbon percentage is maximum in

1 Pyrene

2 Gammexane

3 Ethylene glycol

4 PVC

Explanation:

(c) $%$ of $C = \frac{M a s s o f C}{M a s s o f s u b s t a n c e} \times 100$
$C C l_{4} = \frac{12}{154} \times 100 = 7.79 %$
$C_{6} H_{6} C l_{6} = \frac{72}{291} \times 100 = 24.74 %$
$C H_{2} O H - C H_{2} O H = \frac{24}{62} \times 100 = 38.70 %$ .

ALCOHOLS, PHENOLS AND ETHER

15015 Ortho-dihydroxy benzene is

1 Carvacrol

2 Resorcinol

3 Catechol

4 Orcinol

Explanation:

(c) $o -$ dihydroxy benzene or catechol. 351-s7

ALCOHOLS, PHENOLS AND ETHER

15013 Cresols are

1 Hydroxy toluenes

2 Dihydric phenols

3 Trihydric phenols

4 Trihydric alcohols

ALCOHOLS, PHENOLS AND ETHER

15159 In reaction of alcohols with alkali metal, acid etc. which of the following alcohol will react fastest

1 Secondary

2 Tertiary

3 Primary

4 All equal

Explanation:

(c)Order of reactivity with alkali metal (e.g.-Sodium) follows the order $1^{o} > 2^{o} > 3^{o}$ .

ALCOHOLS, PHENOLS AND ETHER

15014 Carbon percentage is maximum in

1 Pyrene

2 Gammexane

3 Ethylene glycol

4 PVC

Explanation:

(c) $%$ of $C = \frac{M a s s o f C}{M a s s o f s u b s t a n c e} \times 100$
$C C l_{4} = \frac{12}{154} \times 100 = 7.79 %$
$C_{6} H_{6} C l_{6} = \frac{72}{291} \times 100 = 24.74 %$
$C H_{2} O H - C H_{2} O H = \frac{24}{62} \times 100 = 38.70 %$ .

ALCOHOLS, PHENOLS AND ETHER

15015 Ortho-dihydroxy benzene is

1 Carvacrol

2 Resorcinol

3 Catechol

4 Orcinol

Explanation:

(c) $o -$ dihydroxy benzene or catechol. 351-s7

ALCOHOLS, PHENOLS AND ETHER

15013 Cresols are

1 Hydroxy toluenes

2 Dihydric phenols

3 Trihydric phenols

4 Trihydric alcohols

ALCOHOLS, PHENOLS AND ETHER

15159 In reaction of alcohols with alkali metal, acid etc. which of the following alcohol will react fastest

1 Secondary

2 Tertiary

3 Primary

4 All equal

Explanation:

(c)Order of reactivity with alkali metal (e.g.-Sodium) follows the order $1^{o} > 2^{o} > 3^{o}$ .

ALCOHOLS, PHENOLS AND ETHER

15014 Carbon percentage is maximum in

1 Pyrene

2 Gammexane

3 Ethylene glycol

4 PVC

Explanation:

(c) $%$ of $C = \frac{M a s s o f C}{M a s s o f s u b s t a n c e} \times 100$
$C C l_{4} = \frac{12}{154} \times 100 = 7.79 %$
$C_{6} H_{6} C l_{6} = \frac{72}{291} \times 100 = 24.74 %$
$C H_{2} O H - C H_{2} O H = \frac{24}{62} \times 100 = 38.70 %$ .

ALCOHOLS, PHENOLS AND ETHER

15015 Ortho-dihydroxy benzene is

1 Carvacrol

2 Resorcinol

3 Catechol

4 Orcinol

Explanation:

(c) $o -$ dihydroxy benzene or catechol. 351-s7

ALCOHOLS, PHENOLS AND ETHER

15013 Cresols are

1 Hydroxy toluenes

2 Dihydric phenols

3 Trihydric phenols

4 Trihydric alcohols

ALCOHOLS, PHENOLS AND ETHER

15159 In reaction of alcohols with alkali metal, acid etc. which of the following alcohol will react fastest

1 Secondary

2 Tertiary

3 Primary

4 All equal

Explanation:

(c)Order of reactivity with alkali metal (e.g.-Sodium) follows the order $1^{o} > 2^{o} > 3^{o}$ .

ALCOHOLS, PHENOLS AND ETHER

15014 Carbon percentage is maximum in

1 Pyrene

2 Gammexane

3 Ethylene glycol

4 PVC

Explanation:

(c) $%$ of $C = \frac{M a s s o f C}{M a s s o f s u b s t a n c e} \times 100$
$C C l_{4} = \frac{12}{154} \times 100 = 7.79 %$
$C_{6} H_{6} C l_{6} = \frac{72}{291} \times 100 = 24.74 %$
$C H_{2} O H - C H_{2} O H = \frac{24}{62} \times 100 = 38.70 %$ .

ALCOHOLS, PHENOLS AND ETHER

15015 Ortho-dihydroxy benzene is

1 Carvacrol

2 Resorcinol

3 Catechol

4 Orcinol

Explanation:

(c) $o -$ dihydroxy benzene or catechol. 351-s7

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