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MCQ

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7 questions · timed · auto-graded

MCQ 11 Mark
Which of the following lose electrons to form cations ?
  • Metals
  • B
    Non-metals
  • C
    Both a. and b.
  • D
    None of these
Answer
Correct option: A.
Metals
Metals
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MCQ 21 Mark
Which among the following shows variable valency ?
  • A
    Zinc
  • B
    Sodium
  • Iron
  • D
    Calcium
Answer
Correct option: C.
Iron
Iron
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MCQ 31 Mark
Which of the following is a triatomic molecule ?
  • A
    Oxygen
  • B
    Sulphur
  • C
    Nitrogen
  • Ozone
Answer
Correct option: D.
Ozone
Ozone
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MCQ 51 Mark
The non-metal which is liquid at room temperature is
  • A
    sulphur
  • B
    chlorine
  • C
    iodine
  • bromine
Answer
Correct option: D.
bromine
bromine
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MCQ 61 Mark
Which of the following is a metalloid ?
  • A
    Copper
  • B
    Silver
  • Germanium
  • D
    Lead
Answer
Correct option: C.
Germanium
Germanium
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MCQ 71 Mark
The earth’s crust is made up mainly of oxygen and
  • A
    Carbon
  • B
    phosphorus
  • silicon
  • D
    nitrogen
Answer
Correct option: C.
silicon
silicon
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MCQ - CHEMISTRY STD 7 Questions - Vidyadip