Question 1.
The metal used to galvanise iron to protect it from rusting is
A. Zinc
B. Chromium
C. Lead
D. Antimony
Ans: A. Zinc
Question 2.
When a spoon is to be electroplated with nickel the spoon is
A. Dipped in a nickel sulphate solution
B. Made anode and a pure nickel rod, the cathode
C. Made cathode and a pure nickel red, the anode
D. Coated with nickel sulphate and dried
Ans: C. Made cathode and a pure nickel red, the anode
Question 3.
Galvanization is the :
A. Deposition of zinc on iron
B. Deposition of tin on iron
C. Deposition of copper on iron
D. Deposition of aluminium on iron
Ans: A. Deposition of zinc on iron
Question 4.
A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed?
A. From brown to blue-black
B. From brown to orange-red
C. From blue to pink
D. From pink to blue-green
Ans: A. From brown to blue-black
Question 5.
Iron is prevented from rusting by coating with zinc. This process is called as
A. Galvanisation
B. Corrosion
C. Sublimation
D. Reduction
Ans: A. Galvanisation
Question 6.
Conversion of chemical energy into electrical energy occurs in
A. Atomic bombs
B. Dynamo
C. A battery
D. Electric heaters
Ans: C. A battery
Question 7.
Which one of the following metals is used to galvanise iron ?
A. Copper
B. Lead
C. Zinc
D. Mercury
Ans: C. Zinc
Question 8.
An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a :
A. Power transmittor
B. Battery
C. Uninterrupted power supply (UPS)
D. Generator
Ans: B. Battery
Question 9.
An electric iron has a heating element made of :
A. Copper
B. Tungsten
C. Nichrome
D. Zinc
Ans: C. Nichrome
Question 10.
The process of covering water pipes made of Iron with Zinc layer to prevent corrosion is called :
A. Zinc plating
B. Alloy formation
C. Vulcanization
D. Galvanization
Ans: D. Galvanization
Question 11.
A non-electronic conductor is
A. Iron
B. Gas Carbon
C. Copper Sulphate
D. None of these
Ans: D. None of these
Question 12.
The metals commonly used for electroplating are
A. Gold, Sodium and Chromium
B. Chromium, Copper and Nickel
C. Nickel, Lead and Chromium
D. Gold, Sodium and Potassium
Ans: B. Chromium, Copper and Nickel
Question 13.
The metal chiefly used for galvanising iron is :
A. Zinc
B. Mercury
C. Cadmium
D. Tin
Ans: A. Zinc
Question 14.
Galvanization of iron is carried out using
A. Zinc
B. Tin
C. Copper
D. Chromium
Ans: A. Zinc
Question 15.
The anode of a dry cell is made up of
A. Iron
B. Cadmium
C. Zinc
D. Lead
Ans: C. Zinc
Question 16.
In galvanization, iron is coated with
A. Copper
B. Zinc
C. Tin
D. Nickel
Ans: B. Zinc
Question 17.
The anode in a dry cell consists of
A. Copper
B. Zinc
C. Cadmium
D. Graphite
Ans: B. Zinc
Question 18.
The working of a dry cell is based on
A. Decomposition reaction
B. Spontaneous oxidation-reduction reaction
C. Combination reaction
D. Electrolysis
Ans: D. Electrolysis
Question 19.
The coating of a thin layer of zinc on steel or iron objects is known as
A. Hot dipping
B. Tinning
C. Galvanising
D. Electroplating
Ans: C. Galvanising
Question 20.
The process of improving the quality of rubber by heating it with sulphur is called
A. Vulcanization
B. Acceleration
C. Sulphonation
D. Galvanization
Ans: A. Vulcanization
Chemistry GK MCQs all set
- Chemistry GK MCQs Set-1
- Chemistry GK MCQs Set-2
- Chemistry GK MCQs Set-3
- Chemistry GK MCQs Set-4
- Chemistry GK MCQs Set-5
- Chemistry GK MCQs Set-6
- Chemistry GK MCQs Set-7
- Chemistry GK MCQs Set-8
- Chemistry GK MCQs Set-9
- Chemistry GK MCQs Set-10
- Chemistry GK MCQs Set-11
- Chemistry GK MCQs Set-12
- Chemistry GK MCQs Set-13
- Chemistry GK MCQs Set-14
- Chemistry GK MCQs Set-15
- Chemistry GK MCQs Set-16
- Chemistry GK MCQs Set-17
- Chemistry GK MCQs Set-18
- Chemistry GK MCQs Set-19
- Chemistry GK MCQs Set-20
- Chemistry GK MCQs Set-21
- Chemistry GK MCQs Set-22
- Chemistry GK MCQs Set-23
- Chemistry GK MCQs Set-24
- Chemistry GK MCQs Set-25
- Chemistry GK MCQs Set-26
- Chemistry GK MCQs Set-27
- Chemistry GK MCQs Set-28
- Chemistry GK MCQs Set-29
- Chemistry GK MCQs Set-30
- Chemistry GK MCQs Set-31
- Chemistry GK MCQs Set-32
- Chemistry GK MCQs Set-33
- Chemistry GK MCQs Set-34
- Chemistry GK MCQs Set-35
- Chemistry GK MCQs Set-36
- Chemistry GK MCQs Set-37
- Chemistry GK MCQs Set-38
- Chemistry GK MCQs Set-39
- Chemistry GK MCQs Set-40
- Chemistry GK MCQs Set-41
- Chemistry GK MCQs Set-42
- Chemistry GK MCQs Set-43
- Chemistry GK MCQs Set-44
- Chemistry GK MCQs Set-45
- Chemistry GK MCQs Set-46
- Chemistry GK MCQs Set-47
- Chemistry GK MCQs Set-48
- Chemistry GK MCQs Set-49
- Chemistry GK MCQs Set-50
- Chemistry GK MCQs Set-51
- Chemistry GK MCQs Set-52
- Chemistry GK MCQs Set-53
- Chemistry GK MCQs Set-54
- Chemistry GK MCQs Set-55
- Chemistry GK MCQs Set-56
- Chemistry GK MCQs Set-57
- Chemistry GK MCQs Set-58
- Chemistry GK MCQs Set-59
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