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Chemistry MCQ

Electrolysis · ICSE STD 10 (ICSE - English Medium). 11 questions.

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11 questions · timed · auto-graded

MCQ 11 Mark
The electrolyte used for electroplating an article with silver is:
  • A
    Silver nitrate solution
  • B
    Silver cynide solution
  • ✓
    Sodium argentocyanide solution
  • D
    Nickel sulphate solution
Answer
Correct option: C.
Sodium argentocyanide solution
The electrolyte used for electroplating an article with silver is: Sodium argentocyanide solution
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MCQ 21 Mark
When fused lead bromide is electrolyzed we observe
  • A
    A silver grey deposit at anode and a reddish brown deposit at cathode
  • B
    A silver grey deposit at cathode and reddish brown deposit at anode
  • ✓
    A silver grey deposit at cathode and reddish brown fumes at anode
  • D
    Silver grey fumes at anode and reddish brown fumes at cathode
Answer
Correct option: C.
A silver grey deposit at cathode and reddish brown fumes at anode
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MCQ 31 Mark
Which of these will act as a non$-$electrolyte?
  • ✓
    Liquid carbon tetrachloride
  • B
    Acetic acid
  • C
    Sodium hydroxide aqueous solution acid
  • D
    Potassium chloride aqueous solution
Answer
Correct option: A.
Liquid carbon tetrachloride
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MCQ 41 Mark
During ionization metals lose electrons, this change can be called $.......$
  • ✓
    Oxidation
  • B
    Reduction
  • C
    Redox 
  • D
    Displacement
Answer
Correct option: A.
Oxidation
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MCQ 51 Mark
A compound which liberates reddish brown gas around the anode during the electrolysis in its molten state is:______________
  • A
    Sodium chloride
  • B
    Copper (II) oxide
  • C
    Copper (II) sulphate
  • ✓
    Lead (II) bromide
Answer
Correct option: D.
Lead (II) bromide
A compound which liberates reddish brown gas around the anode during the electrolysis in its molten state is : Lead (II) bromide
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MCQ 61 Mark
During the electrolysis of molten lead bromide, which of the following takes place?
  • A
    Bromine is released at the cathode
  • B
    Lead is deposited at the anode
  • C
    Bromine ions gain electrons
  • ✓
    Lead is deposited at the cathode
Answer
Correct option: D.
Lead is deposited at the cathode
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MCQ 71 Mark
Electrolysis of acidulated water is used in the production of
  • A
    Hydrogen
  • B
    Oxygen
  • C
    Nitrogen
  • ✓
    Hydrogen and oxygen
Answer
Correct option: D.
Hydrogen and oxygen
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MCQ 81 Mark
In electrolysis of molten lead bromine anode is made up of
  • A
    Steel rod
  • B
    Platinum foil
  • C
    Glass rod
  • ✓
    Graphite rod
Answer
Correct option: D.
Graphite rod
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MCQ 91 Mark
Which among the following anions will discharge with ease at anode?
  • A
    $Cl ^{-}$
  • B
    $I ^{-}$
  • ✓
    $OH ^{-}$
  • D
    $SO _4^{2-}$
Answer
Correct option: C.
$OH ^{-}$
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MCQ 101 Mark
Which among the following cations will discharge with ease at cathode?
  • A
    $Na ^{+}$
  • ✓
    $Au ^{3+}$
  • C
    $Cu ^{2+}$
  • D
    $H ^{+}$
Answer
Correct option: B.
$Au ^{3+}$
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