Alcohols Phenols And Ethers Test

Alcohols Phenols And Ethers

This is alcohols phenols and ethers Test-02 for CBSE class 12 Chemistry.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Arrange the following alcohols, hydrocarbon and ether in order of their increasing boiling points Pentan – 1 – ol, n – butane, pentanal, ethoxyethane.
  • A
    pentanal and pentan – 1 – ol, n – Butane, ethoxyethane
  • B
    n – Butane, ethoxyethane, pentanal and pentan – 1 – ol.
    Correct
  • C
    ethoxyethane, pentanal and pentan – 1 – ol,n – Butane
  • D
    pentan – 1 – ol ,n – Butane, ethoxyethane, pentanal
2
IUPAC name of the following compound is
Question 2 figure 1
  • A
    2 – methoxy – 2 – methylethane
  • B
    2 – methoxypropane
  • C
    isopropylmethyl ether
  • D
    1 – methoxy – 1 – methylethane
    Correct
3
Boiling points of alcohols and phenols are higher than
  • A
    all of these
    Correct
  • B
    hydrocarbons
  • C
    haloalkanes and haloarenes of comparable molecular masses
  • D
    ethers
4
Lucas reagent.is
  • A
    conc.$H_2SO_4$and $ZnCl_2$
  • B
    conc. HCl and $ZnCl_2$
    Correct
  • C
    dil. HCl and $ZnCl_2$
  • D
    dil..$H_2SO_4$and $ZnCl_2$
5
Alcohols undergo dehydration (removal of a molecule of water) to form alkenes on treating with
  • A
    conc.$H_2SO_4$
    Correct
  • B
    conc. HCl and $ZnCl_2$
  • C
    conc. HCl
  • D
    conc.$H_2SO_4$and $ZnCl_2$
6
Alcohols are easily dehydrated in the following order
  • A
    Primary> Secondary >Tertiary
  • B
    None of the above
  • C
    Secondary > Primary>Tertiary
  • D
    Tertiary > Secondary > Primary
    Correct
7
One of the following alcohols do not undergo oxidation reaction
  • A
    None of these
  • B
    Tertiary alcohol
    Correct
  • C
    Primary alcohol
  • D
    Secondary alcohol
8
In the reaction
Question 8 figure 1
  • A
    Phenols are acidic in nature.
  • B
    All of these
    Correct
  • C
    They can donate a proton to a stronger base
  • D
    Cleavage of O – H bond
9
The reaction in Q No.26,phenols are
  • A
    acidic in nature.
  • B
    all of these
    Correct
  • C
    phenols are Brönsted acids
  • D
    O – H is highly polar
10
The reaction is known as
Question 10 figure 1
  • A
    Grignard's synthesis
  • B
    Kolbe's synthesis
  • C
    Wurtz's synthesis
  • D
    Williamson's synthesis
    Correct
11
Lucas test is associated with
  • A
    Carboxylic acid
  • B
    Aldehydes
  • C
    Alcohols
    Correct
  • D
    Phenols
12
An organic compound containing oxygen, upon oxidation forms a carboxylic acid as the only organic product with its molecular mass higher by 14 units. The organic compound is ______.
  • A
    a ketone
  • B
    an aldehyde
  • C
    a secondary alcohol
  • D
    a primary alcohol
    Correct
13
Arrange the following compounds in increasing order of their acid strength: Propan – 1 – ol, 2,4,6 – trinitrophenol, 3 – nitrophenol, 3,5 – dinitrophenol,phenol, 4 – methylphenol.
  • A
    3, 5 – dinitrophenol,2,4, 6 – trinitrophenol, 3 – nitrophenol ,Propan – 1 – ol, 4 – methylphenol,.
  • B
    3 – nitrophenol, 3,5 – dinitrophenol,2,4, 6 – trinitrophenol, Propan – 1 – ol, 4 – methylphenol
  • C
    4 – methylphenol, phenol, propan – 1 – ol,3 – nitrophenol, 3,5 – dinitrophenol,2,4, 6 – trinitrophenol.
  • D
    Propan – 1 – ol, 4 – methylphenol, phenol, 3 – nitrophenol, 3,5 – dinitrophenol,2,4, 6 – trinitrophenol.
    Correct
14
Alcoholic compounds react
  • A
    Only as nucleophiles.
    Correct
  • B
    only as electrophiles
  • C
    None of these
  • D
    both as nucleophiles and electrophiles.
15
An organic compound X is oxidised by using acidified $K_2Cr_2O_7$. The product obtained reacts with Phenyl hydrazine but does not answer silver mirror test. The possible structure of X is
  • A
    $(CH_3)_2CHOH $
    Correct
  • B
    $CH_3CHO$
  • C
    $CH_3CH_2OH$
  • D
    None of the above