The Pblock Elements Test

The Pblock Elements

This is the pblock elements Test-03 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 prepared by cyanamide process?
  • A
    Ammonia
    Correct
  • B
    Urea
  • C
    Nitrogen
  • D
    Cyanamide
2
Ozone can be detected by using
  • A
    Mercury
    Correct
  • B
    None of these
  • C
    Silver
  • D
    Sodium
3
Which of the following oxides reacts with both HCl and NaOH?
  • A
    ZnO
    Correct
  • B
    $N_2O_5$
  • C
    CaO
  • D
    $CO_2$
4
Name the gas whose formula was established by Sorret.
  • A
    Oxygen
  • B
    Nitrous oxide
  • C
    Nitric oxide
  • D
    Ozone
    Correct
5
Which colour is given by $CuSO_4$ with ammonia?
  • A
    Orange
  • B
    Blue
  • C
    Pink
  • D
    White
    Correct
6
$N_2O_3$ is
  • A
    A neutral oxide and the anhydride of $HNO_3$
  • B
    An acidic oxide and the anhydride of $H_2N_2O_2$
  • C
    A basic oxide and the anhydride of $HNO_2$
  • D
    An acidic oxide and an anhydride of $HNO_2$
    Correct
7
Which of the following is Paramagnetic?
  • A
    $N_2O_5$
  • B
    None of these
  • C
    NO
    Correct
  • D
    $N_2O$
8
Laughing gas is soluble in
  • A
    Hot water
  • B
    None of these
  • C
    Cold water
    Correct
  • D
    Both cold and hot water
9
Which is used to produce smoke screens?
  • A
    Zinc phosphide
  • B
    Zinc sulphide
  • C
    Calcium phosphide
    Correct
  • D
    Sodium carbonate
10
In $XeO_3$ and $XeF_6$ the oxidation state of Xe is
  • A
    +4
  • B
    +1
  • C
    +3
  • D
    +6
    Correct
11
The structure of ClF3 is
  • A
    Trigonal bipyramidal
    Correct
  • B
    Octahedral
  • C
    Pyramidal
  • D
    Tetrahedral
12
Iodine is liberated from KI solution when treated with
  • A
    $NiSO_4$
  • B
    $FeSO_4$
  • C
    $ZnSO_4$
  • D
    $CuSO_4$
    Correct
13
Xenondifluoride is
  • A
    Trigonal
  • B
    Pyramidal
  • C
    Angular
  • D
    Linear
    Correct
14
Ammonia is used in detection of
  • A
    Sodium ion
  • B
    Magnesium ion
  • C
    Copper ion
    Correct
  • D
    Potassium ion
15
Laughing gas is
  • A
    $N_2O_3$
  • B
    $N_2O_5$
  • C
    $N_2O$
    Correct
  • D
    NO