Question 1.
Most commonly used bleaching agent is
A. Sodium chloride
B. Alcohol
C. Carbon dioxide
D. Chlorine
Ans: D. Chlorine
Question 2.
An alloy used in making heating elements for electric heating device is
A. Solder
B. Alloy Steel
C. Nichrome
D. German Silver
Ans: C. Nichrome
Question 3.
Bauxite is used as raw material by which industry ?
A. Aluminium
B. Iron
C. Steel
D. Gold
Ans: A. Aluminium
Question 4.
Brass is made of
A. Copper and tin
B. Tin and lead
C. Copper and zinc
D. Copper, tin and zinc
Ans: C. Copper and zinc
Question 5.
The acid which is secreted by the glands in the stomach wall is
A. Sulphuric acid
B. Hydrochloric acid
C. Nitric acid
D. Phosphoric acid
Ans: C. Nitric acid
Question 6.
Which of the following is an iron ore ?
A. Bauxite
B. Magnetite
C. Lignite
D. Nitrite
Ans: B. Magnetite
Question 7.
Brass contains
A. Copper and Zinc
B. Copper and Tin
C. Copper and Silver
D. Copper and Nickel
Ans: A. Copper and Zinc
Question 8.
Bridgmanite is
A. A bridge on the river Thames
B. Name of a game
C. Earth’s most abundant mineral
D. Name of a music
Ans: C. Earth’s most abundant mineral
Question 9.
Hydrochloric acid is also known as
A. Galic acid
B. Picric acid
C. Muriatic acid
D. Chloric acid
Ans: C. Muriatic acid
Question 10.
The important metal used with iron to produce stainless steel is
A. Aluminium
B. Chromium
C. Tin
D. Carbon
Ans: B. Chromium
Question 11.
Brass is a
A. Compound
B. Element
C. Homogeneous mixture
D. Heterogeneous mixture
Ans: C. Homogeneous mixture
Question 12.
Bronze is an alloy of
A. Copper and Zinc
B. Tin and Zinc
C. Copper and Tin
D. Iron and Zinc
Ans: C. Copper and Tin
Question 13.
Heating of a ore below its melting point in the absence of air is known as
A. Refining
B. Calcination
C. Roasting
D. Smelting
Ans: B. Calcination
Question 14.
Which of the following metals form an amalgam with other metals ?
A. Lead
B. Tin
C. Zinc
D. Mercury
Ans: D. Mercury
Question 15.
Brass is an alloy of
A. Lead and tin
B. Zinc and copper
C. Antimony, tin and lead
D. Zinc, tin and copper
Ans: B. Zinc and copper
Question 16.
Percentage of carbon in steel ranges from
A. 0.1 to 1.5
B. 1.5 to 3.0
C. 3.0 to 4.0
D. 4.0 to 6.0
Ans: A. 0.1 to 1.5
Question 17.
Stainless steel is usually made by alloying the steel with
A. Copper and nickel
B. Copper and chromium
C. Chromium and nickel
D. Manganese and copper
Ans: C. Chromium and nickel
Question 18.
__ gives hardness to stainless steel.
A. Zinc
B. Lead
C. Carbon
D. Tin[
Ans: C. Carbon
Question 19.
Brass is an alloy of :
A. Cu, Al and Zn
B. Cu and Sn
C. Cu and Zn
D. Al and Mg
Ans: C. Cu and Zn
Question 20.
Copper is refined by
A. Roasting
B. Oxidation
C. Electrolysis
D. Zone refining
Ans: A. Roasting
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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