Alcohols, Phenols and Ethers - Quiz 8

Alcohols, Phenols and Ethers Quiz-7

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. 
When glycerol is heated with a large amount of HI or PI_3, the product obtained is:

•  Glycerol triiodide
•  Allyl iodide
•  2- Iodopropane
•  None

Solution
c

Q2. 
Which of the following ether is called phenetole?

•  PhOCH_3
•  PhOC_2 H_5
•  PhOC_3 H_7
•  p-NO_2-C_6 H_4 OC_2 H_5

Solution
(b)

Q3. Ethyl alcohol is heated with conc. H_2 SO_4. The product formed is:

•  
  
•  C_2 H_2
•  C_2 H_4
•  C_2 H_6

Solution
c

Q4. 
Which of the following is wood alcohol?

•  CH_3 OH
•  C_2 H_5 OH
•  1-Butanol
•  2-Methyl-1-propanol

Solution
(a)

Q5.Which of the following statements is/ are wrong?

•  When diethyl ether is treated with excess of Cl_2 in light, perchloro diethyl ether is obtained (C_2 Cl_5 )_2 O
•  When diethyl ether is treated with 1 mol of Cl_2 in dark, 1-chloro ethyl ether is obtained
•  When diethyl ether is treated with 2 mol of Cl_2 in dark, 1,1’-dichlorodiethyl is obtained
•  When diethyl ether is treated with 2 mol of Cl_2 in dark, 1,1’-dichloro and 1,2-dichloroethyl ether are obtained

Solution
(d)

Q6. Consider the reaction
C_3 H_7 OH + CH_2-N_2 (Diazomethane) + HBF_4 →
The leaving group is:

•  CH_2^⊖
•  N_2
• BF_4^⊖
•  C_3 H_7 O^⊖

Solution
b

Q7.
Dioxane used as a solvent is obtained by distilling…………with………

•  Glycerol, conc.H_2 SO_4
•  Glycerol, conc. H_3 PO_4
•  Glycol, conc. H_2 SO_4
•  Glycol, conc. H_2 SO_4

Solution
(c)

Q8.The presence of peroxides in old samples of ethers is detected by shaking them with a freshly prepared solution of Fe^(2+) (FeSO_4) followed by the addition of KCNS. The appearance of……………colour indicates the presence of peroxides:

•  Blue
•  Green
•  Red
•  Brown

Solution
(c)

Q9.

•  
  
•  
  
•  
  
•  d) All

Solution
(a) The cleavage of (C-OH) bond is feasible rather than cleavage of (Ar-OH) bond because of resonance stabilisation in ArOH

Q10. 
The compound that will react with HBr most readily is:

•  (CH_3 )_3 COH
•  (CH_3 )_2 CHOH
•  CH_3 CH_2 OH
• C_6 H_5 OH

Solution
(a) Reactivity with HBr is 3°>2°>1°alcohol;(a) is a 3° alcohol. Phenol does not react with HBr. (Ar-O) bond is not broken unless the ring is activated by the presence of EWG (e.g.,NO_2 )ato- and p-positions