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Chemistry MCQ

9.2 Nitric Acid · ICSE STD 10 (ICSE - English Medium). 4 questions.

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4 questions · timed · auto-graded

MCQ 11 Mark
The catalyst used in the manufacture of $\ce{HNO_3}$ by Ostwald process is
  • A
    Platinum black
  • B
    Finely dividend nickel
  • C
    Vanadium pentoxide
  • ✓
    Platinum gauze
Answer
Correct option: D.
Platinum gauze
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MCQ 21 Mark
When treated with nitric acid which of the following liberate hydrogen?
  • A
    Zinc
  • ✓
    Magnesium
  • C
    Copper
  • D
    Mercury
Answer
Correct option: B.
Magnesium
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MCQ 31 Mark
Concentrated nitric acid oxidises phosphorus to :
  • ✓
    $H _3 PO _4$
  • B
    $P _2 O _3$
  • C
    $H _3 PO _2$
  • D
    $H _4 P _2 O _7$
Answer
Correct option: A.
$H _3 PO _4$
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MCQ 41 Mark
Nitric acid on standing develops brownish colour which may be attributed to the presence of
  • A
    $No _2^{+}$
  • B
    $NO _3^{-}$ions
  • ✓
    $NO _2$
  • D
    $HNO _2$
Answer
Correct option: C.
$NO _2$
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