Alcohols, Phenols and Ethers Quiz-1
Dear Readers,
JEE Advanced is a high level exam that checks your concept by putting various types of questions. The questions are in a different format from JEE mains.m, herein the questions are : single correct multiple choice questions, multiple correct multiple choice questions, statement based questions and comprehension type questions..
Q1.
HBr reacts fastest with:
HBr reacts fastest with:
Solution
(a) Reactivity of alcohol with HBr is 3°>2°>1°;(a) is 3° alcohol
(a) Reactivity of alcohol with HBr is 3°>2°>1°;(a) is 3° alcohol
Q2.
Diethyl ether on heating with cons.HI gives two moles of:
Diethyl ether on heating with cons.HI gives two moles of:
Solution
c
c
Q3. Phenol + Aerial Oxide → Coloured product. This is due to the formation of:
Solution
c
c
Q4.
The strongest acid among the following aromatic compound is:
Solution
c
c
Q5.
The crown-guest complex is called an inclusion compound. The crown ether allows the inorganic salt to dissolve in non-polar solvents. KMnO_4 forms a complex with crown ether. In this complex, the host is………… and the guest is……………
The crown-guest complex is called an inclusion compound. The crown ether allows the inorganic salt to dissolve in non-polar solvents. KMnO_4 forms a complex with crown ether. In this complex, the host is………… and the guest is……………
Solution
b
b
Q6. 
Solution
(d) IV>III>I>II
In(IV), (-NO_2 ) at para exerts more e ̅-withdrawing effect due to –R and –I effects, but in (III), (-NO_2)at m-position exert only –I effect. So,(IV) is stronger than (III).
Phenol (I) is stronger than (II) in which (Me) group exerts e ̅- donating effect due to (+I and H.C.).
Hence, the other of acidic character is as given above
(d) IV>III>I>II
In(IV), (-NO_2 ) at para exerts more e ̅-withdrawing effect due to –R and –I effects, but in (III), (-NO_2)at m-position exert only –I effect. So,(IV) is stronger than (III).
Phenol (I) is stronger than (II) in which (Me) group exerts e ̅- donating effect due to (+I and H.C.).
Hence, the other of acidic character is as given above
Q7.
Solution
b
b
Q8.The compound which reacts fastest with Lucas reagent at room temperature is:
Solution
(d) Reactivity of alcohol with Lucas reagent is 3°>2°>1°. Further, (d) is a 3° alcohol
(d) Reactivity of alcohol with Lucas reagent is 3°>2°>1°. Further, (d) is a 3° alcohol
Q9.
Solution
(a)
B_2 H_6/THF also resuces (C=O) group to (-CHOH) group and (-COOH) group to (CH_2 OH), along with reaction at (C=C) bond to from alcohol (anti-Markovnikov’s rule)
(a)
B_2 H_6/THF also resuces (C=O) group to (-CHOH) group and (-COOH) group to (CH_2 OH), along with reaction at (C=C) bond to from alcohol (anti-Markovnikov’s rule)
Q10.
Benzene diazonium chloride on reaction with phenol in a basic medium gives:
Benzene diazonium chloride on reaction with phenol in a basic medium gives:
Solution
b
b
