Alcohols, Phenols and Ethers Quiz-4
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.
Which of the following statements is true?
Path I is feasible, whereas path II is not
Path II is feasible, whereas path I is not
iii. The Cl of (A) undergoes SN reaction because it is activated by the two EWG(-NO_2) groups
Path I is feasible, whereas path II is not
Path II is feasible, whereas path I is not
iii. The Cl of (A) undergoes SN reaction because it is activated by the two EWG(-NO_2) groups
Solution
(c)
(c)
Q2.
Which of the following is most basic in character?
Which of the following is most basic in character?
Solution
(c) Ethers are Lewis bases due to the presence of 2LP e ̅'s
(c) Ethers are Lewis bases due to the presence of 2LP e ̅'s
Q3. 
Solution
a
a
Q4.
Solution
(a) The positive charge that develops on benzylic C in this SN1 reaction is most effectively delocalised by (OMe) group (+R and –I). The (p-NO2) group withdraws e- density from the ring by –I and –R(p-Cl) group withdraws e ̅s’ from the ring by –I only. More EDG (e.g-OMe)stabilies positive chargeon the benzyl C atom, whereas EWG (e.g,-NO2,-Cl) destabilises the positive charge. Hence, the reactivity order is: I>II>III>IV
(a) The positive charge that develops on benzylic C in this SN1 reaction is most effectively delocalised by (OMe) group (+R and –I). The (p-NO2) group withdraws e- density from the ring by –I and –R(p-Cl) group withdraws e ̅s’ from the ring by –I only. More EDG (e.g-OMe)stabilies positive chargeon the benzyl C atom, whereas EWG (e.g,-NO2,-Cl) destabilises the positive charge. Hence, the reactivity order is: I>II>III>IV
Q5.
The crown ethers are heterocyclic polyethers, usually with at least four oxygen atoms. The 12-crown-4 ether contains…………….carbon atoms
The crown ethers are heterocyclic polyethers, usually with at least four oxygen atoms. The 12-crown-4 ether contains…………….carbon atoms
Solution
c
c
Q6. When benzene sulphonic acid and p-nitrophenol are treated with NaHCO3, the gases released respectively are
Solution
Q7.
Solution
c
c
Q8.Diethylene glycol is obtained by heating glycol with:
Solution
(b)
(b)
Q9.The best method to prepare cyclohexene from cyclohexanol is by using
Solution
(b) The best method to prepare cyclohexene from cyclohexanol is by conc. H3 PO4 because in given options dehydrating agent is conc. H3 PO4
(b) The best method to prepare cyclohexene from cyclohexanol is by conc. H3 PO4 because in given options dehydrating agent is conc. H3 PO4
Q10.
Hydrogen bonding is maximum in:
Hydrogen bonding is maximum in:
Solution
(a) H-bonding is maximum in ethanol because H is bounded to high EN element, i.e., O atom
(a) H-bonding is maximum in ethanol because H is bounded to high EN element, i.e., O atom
