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Chemistry MCQ

9.1 Ammonia · ICSE STD 10 (ICSE - English Medium). 8 questions.

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8 questions · timed · auto-graded

MCQ 11 Mark
Ammonia can be obtained by adding water to:
  • A
    Ammonium chloride
  • B
    Ammonium nitrite
  • ✓
    Magnesium nitride
  • D
    Magnesium nitrate
Answer
Correct option: C.
Magnesium nitride
$
AlN +3 H _2 O \longrightarrow Al ( OH )_3+ NH _3 \uparrow
$
Magnesium nitride
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MCQ 21 Mark
In the Habers process for the manufacture of $NH_3$, iron is used as catalyst and molybedenum as promoter. The function of promoter is
  • A
    To Increase the rate of combination of gases
  • B
    To raise the activation energy of the reaction
  • ✓
    To increase the activity of the catalyst
  • D
    To increase the yield of ammonia.
Answer
Correct option: C.
To increase the activity of the catalyst
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MCQ 31 Mark
Liquid ammonia is used in refrigeration because of its
  • A
    High dipole moment
  • B
    Baricity
  • C
    Stability
  • ✓
    High heat of vaporization
Answer
Correct option: D.
High heat of vaporization
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MCQ 41 Mark
The other products obtained along with water where $NH_3$ is passed over heated CuO are
  • A
    $Cu \left( NH _2\right)_2$ and $H _2$
  • B
    $\left[ Cu \left( NH _3\right)_4\right]_2+\text { and } O _2$
  • ✓
    Cu and $N _2$
  • D
    None of these
Answer
Correct option: C.
Cu and $N _2$
Cu and $N _2$
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MCQ 51 Mark
Ammonia is commercially prepared by
  • ✓
    Haber's process
  • B
    Ostwald process
  • C
    Contact process
  • D
    Head chamber process
Answer
Correct option: A.
Haber's process
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MCQ 61 Mark
Nesslers reagent is an alkaline solution of
  • A
    $HgI _2$
  • ✓
    $K _2 Hgl _4$
  • C
    $HgNH _2 I$
  • D
    $NH _2 HgO HgI$
Answer
Correct option: B.
$K _2 Hgl _4$
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MCQ 71 Mark
Ammonia reacts with excess chlorine to form
  • A
    $NH _4 Cl$
  • B
    $NH _3, NCl _3, HCl$
  • C
    $N _2, NH _4 Cl$
  • ✓
    $NCl _3, HCl$
Answer
Correct option: D.
$NCl _3, HCl$
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MCQ 81 Mark
Ammonia is produced when ammonium chloride is heated with
  • A
    Potassium nitrate
  • ✓
    Slacked lime
  • C
    Quick lime
  • D
    Sodium nitrate
Answer
Correct option: B.
Slacked lime
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