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CHEMISTRY MCQ

Unit - 3.1 Elements, Compounds and Mixtures · ICSE STD 8 (ICSE - English Medium). 5 questions.

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5 questions · timed · auto-graded

MCQ 11 Mark
In which of the following substances its constituents retain their properties ?
  • A
    Atom
  • B
    Element
  • ✓
    Compound
  • D
    Mixture
Answer
Correct option: C.
Compound
(c) Compound is correct.
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MCQ 21 Mark
In which of the following formation of substances need energy change necessarily ?
  • A
    Element
  • ✓
    Compound
  • C
    Mixture
  • D
    All of these
Answer
Correct option: B.
Compound
(b) Compound is correct.
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MCQ 31 Mark
In which of the following substances mechanical separation is possible ?
  • A
    Atom
  • B
    Element
  • C
    Compound
  • ✓
    Mixture
Answer
Correct option: D.
Mixture
(d) Mixture is correct.
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MCQ 41 Mark
In nature, a chemical compound is
  • A
    pure
  • B
    homogeneous
  • C
    heterogeneous
  • ✓
    both (a) and (b)
Answer
Correct option: D.
both (a) and (b)
(d) both (a) and (b) is correct.
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MCQ 51 Mark
In which of the following reactions can an element be broken into two or more smaller parts ?
  • A
    Physical
  • B
    Chemical
  • ✓
    Nuclear
  • D
    Mechanical
Answer
Correct option: C.
Nuclear
(c) Nuclear is correct.
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MCQ - CHEMISTRY STD 8 Questions - Vidyadip