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CHEMISTRY MCQ

Chemical Changes and Reactions · ICSE STD 9 (ICSE - English Medium). 4 questions.

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4 questions · timed · auto-graded

MCQ 11 Mark
Thermal decomposition of sodium carbonate will produce
  • ✓
    Carbon dioxide
  • B
    Oxygen
  • C
    Sodium hydroxide
  • D
    No other product
Answer
Correct option: A.
Carbon dioxide
Carbon dioxide
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MCQ 21 Mark
The reaction $\mathrm{BaCl}_{2(\mathrm{aq})}+\mathrm{H}_2 \mathrm{SO}_{4(\mathrm{aq})} \rightarrow \mathrm{BaSO}_{4(\mathrm{~s})}+2 \mathrm{HCl}_{(\mathrm{aq})}$ is
  • A
    Displacement reaction
  • B
    Neutralisation reaction
  • C
    Decomposition reaction
  • ✓
    Double displacement reaction
Answer
Correct option: D.
Double displacement reaction
Double displacement reaction
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MCQ 31 Mark
A reaction of a type$: AB + CD \rightarrow AD + CD,$ involves
  • A
    No chemical change
  • B
    Decomposition of $AB$ and $CD$
  • ✓
    Exchange of ions of $AB$ and $CD$
  • D
    Combination of $AB$ and $CD$
Answer
Correct option: C.
Exchange of ions of $AB$ and $CD$
Exchange of ions of $AB$ and $CD$
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MCQ 41 Mark
Which of the following is not a characteristic of a chemical change?
  • A
    It is irreversible.
  • ✓
    No net energy change is involved.
  • C
    New substance is formed.
  • D
    Involves absorption or liberation of energy.
Answer
Correct option: B.
No net energy change is involved.
No net energy change is involved.
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MCQ - CHEMISTRY STD 9 Questions - Vidyadip