Alcohols Phenols And Ethers Test

Alcohols Phenols And Ethers

This is alcohols phenols and ethers Test-04 for CBSE class 12 Chemistry.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Which of the following is most acidic?
  • A
    m – Chlorophenol
    Correct
  • B
    Cyclohexanol
  • C
    Benzyl alcohol
  • D
    Phenol
2
Mark the correct order of decreasing acid strength of the following compounds.
Question 2 figure 1
  • A
    e > d > b > a > c
  • B
    e > d > c > b > a
  • C
    d > e > c > b > a
  • D
    b > d > c > a > e
    Correct
3
Increasing order of reactivity of the following compounds with HBr/HCl is
Question 3 figure 1
  • A
    b < a < c
  • B
    c < b < a
  • C
    b < c < a
    Correct
  • D
    a < b < c
4
n – propyl bromide on treating with alcoholic KOH produces
  • A
    propane
  • B
    propyne
  • C
    propene
    Correct
  • D
    propanol
5
Which of the following reactions will yield phenol?
Question 5 figure 1
  • A
    B,C,D
  • B
    D,A,B
  • C
    C,A,D
  • D
    A ,B,C
    Correct
6
Which of the following reagents can be used to oxidise primary alcohols to aldehydes?
  • A
    All of these
    Correct
  • B
    Pyridinium chlorochromate.
  • C
    $CrO_3$ in anhydrous medium..
  • D
    Heat in the presence of Cu at 573K.
7
Phenol can be distinguished from ethanol by the reactions with _________.
  • A
    $\begin{array}{*{20}{l}} {\frac{{B{r_2}}}{{water}}} \end{array}$
  • B
    Na
  • C
    B and C
  • D
    Neutral $FeCl_3$
    Correct
8
How many alcohols with molecular formula C_4{H_10}O are chiral in nature?
  • A
    4
  • B
    3
  • C
    2
    Correct
  • D
    1
9
Preparation of ethers by acid dehydration of secondary or tertiary alcohols is not a suitable method.
  • A
    elimination competes over substitution and alkenes are easily formed
    Correct
  • B
    alkyl group is hindered.
  • C
    alkyl group should be unhindered
  • D
    None of these
10
Di – tert – butyl ether can’t be prepared by Williamson synthesis is an important method for the preparation of ethers. Hint: the reaction is $CH_3ONa$ with $(CH_3)_3C–Cl$
  • A
    None of these
  • B
    $CH_3ONa$ with $(CH_3)_3C–Cl$
  • C
    Di – tert – butyl ether
  • D
    no ether is formed in the reaction and the major product of the given reaction is 2 – methylprop – 1 – ene
    Correct
11
Methyl bromide is converted into ethane by heating it in ether medium with
  • A
    Al
  • B
    Zn
  • C
    Na
    Correct
  • D
    Cu
12
One of the following alcohol is a poison and Ingestion of even small quantities can cause blindness and large quantities causes even death.
  • A
    ethanol
  • B
    propanol
  • C
    methanol
    Correct
  • D
    None of the above
13
The starting material for picric acid is,
  • A
    o – nitrophenol
  • B
    p – nitrophenol
  • C
    phenol
    Correct
  • D
    phenol – 2,4 – disulphonic acid
14
Glycerol is
  • A
    1, 2, 3 – hydroxy propane
  • B
    1, 2, 3 – trihydroxy propane
  • C
    Propane – 1, 2, 3 – triol
    Correct
  • D
    Propane – 1, 2, 3 – ol
15
Lucas reagent.is
  • A
    dil..$H_2SO_4$and $ZnCl_2$
  • B
    dil. HCl and $ZnCl_2$
  • C
    conc. HCl and $ZnCl_2$
    Correct
  • D
    conc.$H_2SO_4$and $ZnCl_2$