Haloalkanes And Haloarenes Test

Haloalkanes And Haloarenes

This is haloalkanes and haloarenes 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
A dibromo derivative of an alkane reacts with sodium metal to form an alicyclic hydrocarbon. The derivative is
  • A
    1, 1 – dibromopropane
  • B
    2, 2 – dibromobutane
  • C
    1, 4 – dibromobutane
    Correct
  • D
    1, 2 – dibromoethane
2
The synthesis of 3 – octyne is achieved by adding a bromoalkane into a mixture of sodium amide and an alkyne. The bromoalkane and alkyne respectively are
  • A
    Option A
  • B
    Option B
  • C
    Option C
    Correct
  • D
    Option D
3
A dibromo derivative of an alkane reacts with sodium metal to form an alicyclic hydrocarbon. The derivative is ______.
  • A
    1, 4 –dibromobutane
    Correct
  • B
    1, 1 – dibromopropane
  • C
    2, 2 – dibromobutane
  • D
    1, 2 – dibromoethane
4
Decomposition of benzene diozonium chloride by using Cu2Cl2/HCl to form chlorobenzene is
  • A
    Wurtz – Fittig reaction
  • B
    Friedel – Crafts reaction
  • C
    Sandmeyer's reaction
    Correct
  • D
    Finkelstein reaction
5
IUPAC name of $(CH_3)_3CCl$
  • A
    3 – chloro butane
  • B
    n – butyl chloride
  • C
    2 – chloro 2 methyl propane
    Correct
  • D
    t – butyl chloride
6
Maximum number of molecules of CH3I that can react with a molecule of $CH_3NH_2$is
  • A
    4
  • B
    3
    Correct
  • C
    2
  • D
    1
7
The best method for the conversion of an alcohol into an alkyl chloride is by treating the alcohol with
  • A
    Dry HCl in the presence of anhydrous $ZnCl_2$
  • B
    $PCl_3$
  • C
    $SOCl_2$ in presence of pyridine
    Correct
  • D
    $PCl_5$
8
Which one of the following forms propanenitrile as the major product?
  • A
    Ethyl bromide + alcoholic KCN
    Correct
  • B
    Propyl bromide + alcoholic KCN
  • C
    Ethyl bromide + alcoholic AgCN
  • D
    Propyl bromide + alcoholic AgCN
9
Which one of the following is employed as antityphoid drug?
  • A
    Omeprazole
  • B
    Chloroquine
  • C
    Chloramphenicol
    Correct
  • D
    Diphenyl hydramine
10
Which one of the following is a synthetic halogen compound?
  • A
    Diphenyl hydramine
  • B
    Omeprazole
  • C
    Chloroquine
    Correct
  • D
    Chloramphenicol
11
Decreasing order of reactivity of hydrogen halide acids in the conversion of ROH →RX is
  • A
    HI > HBr > HCl > HF
    Correct
  • B
    HCI > HBr > HI > HF
  • C
    HF > HCI> HBr > HI
  • D
    HF > HBr > HI > HCI
12
Ethyl benzene cannot be prepared by ______.
  • A
    Clemmensen reduction
  • B
    Wurtz – Fittig reaction
  • C
    Friedel – Crafts reaction
  • D
    Wurtz reaction
    Correct
13
Methyl bromide is converted into ethane by heating it in ether medium with
  • A
    Zn
  • B
    Al
  • C
    Cu
  • D
    Na
    Correct
14
The reaction is known as
Question 14 figure 1
  • A
    Grignard's synthesis
  • B
    Williamson's synthesis
    Correct
  • C
    Wurtz's synthesis
  • D
    Kolbe's synthesis
15
p – Dichlorobenzene has than those of o – and m – isomers
  • A
    low melting point and low solubility
  • B
    higher melting point and higher solubility
  • C
    lower melting point and higher solubility
  • D
    higher melting point and lower solubility
    Correct