Here you will find GK MCQ Questions for Chemistry GK with Answers PDF Free Download based on the important concepts and topics given in the textbook as per new exam pattern. This may assist you to understand and check your knowledge about the Chemistry GK. Students also can take a free test of the Multiple Choice Questions of Chemistry GK. Each question has four options followed by the right answer.
Question 1.
Which one is the most reactive gaseous element?
A. Chlorine
B. Bromine
C. Iodine
D. Flourine
Ans: D. Flourine
Question 2.
The element which is used for vulcanizing rubber
A. Sulphur
B. Bromine
C. Silicon
D. Phosphorus
Ans: A. Sulphur
Question 3.
What is the mass percentage of oxygen in carbon dioxide (CO2)?
A. 30.5%
B. 50.9 %
C. 65.8 %
D. 72.7 %
Ans: D. 72.7 %
Question 4.
Gold dissolves in
A. Hydrochloric acid
B. Nitric acid
C. Aqua regia
D. Acetic acid
Ans: C. Aqua regia
Question 5.
Which of the following metals occurs in free state ?
A. Copper
B. Iron
C. Zinc
D. Lead
Ans: D. Lead
Question 6.
Chemically ‘Quick Silver’ is known as
A. Mercury
B. Silver
C. Aluminium
D. Copper
Ans: A. Mercury
Question 7.
Number of 6.023 × 1023 atoms present in one mole of a gas at STP is
A. 6.023 × 1020
B.6.023 × 1023
C. 6.023 × 10–20
D. 6.023 × 10–23
Ans: B.6.023 × 1023
Question 8.
Nitric acid does not react with
A. Gold
B. Copper
C.Zinc
D. Iron
Ans: A. Gold
Question 9.
A. Gold
B. Silver
C. Iron
D. Aluminium
Ans: A. Gold
Question 10.
The weight of 6.023 × 1023 atoms of carbon is
A. 12 gms
B. 120 gms
C. 1.2 gms
D. 0.12 gms
Ans: A. 12 gms
Question 11.
The percentage of nitrogen present in ammonium sulphate is :
A. 27%
B. 25%
C. 30.5%
D. 18%
Ans: A. 27%
Question 12.
Nitrogen in water is commonly found in the form of
A. Nitrous oxide
B. Nitrate
C. Nitric oxide
D. Nitrite
Ans: D. Nitrite
Question 13.
Which of the following metals is used in Space Crafts to withstand high temperatures ?
A. Fe
B. Ti
C. Ni
D. Pb
Ans: B. Ti
Question 14.
If there is one million Mg2+ ions in MgCl2, how many chloride ions are there?
A. Two million
B. One million
C. Half a million
D. Ten million
Ans: A. Two million
Question 15.
The value of Avogadro Number is
A. 6.023 × 1022
B. 6.023 × 1023
C. 6.023 × 1024
D. 6.023 × 1025
Ans: B. 6.023 × 1023
Question 16.
Aquaregia is a mixture of the following in the ratio 1 : 3 by volume
A. Conc. HNO3 and conc. HCl
B. Conc. HNO3 and conc. H2SO4
C. Dil. HCl and dil. HNO3
D. Conc. HCl and conc. HNO3
Ans: A. Conc. HNO3 and conc. HCl
Question 17.
Phosphorus is kept in water because
A. Its ignition temperature is very high
B. Its ignition temperature is very low
C. Its critical temperature is high
D. Its critical temperature is low
Ans: B. Its ignition temperature is very low
Question 18.
What is the mass percentage of carbon in carbon dioxide (CO2)?
A. 15.8 %
B. 20.1 %
C. 27.3 %
D. 32.3 %
Ans: C. 27.3 %
Question 19.
Aqua regia is a 1 : 3 mixture, by volume, of
A. Conc. nitric acid and conc. hydrochloric acid
B. Conc. hydrochloric acid and conc. nitric acid
C. Conc. nitric acid and conc. sulphuric acid
D. Conc. sulphuric acid and conc. nitric acid
Ans: A. Conc. nitric acid and conc. hydrochloric acid
Question 20.
One of the following is used to dissolve noble metals. That is
A. Nitric acid
B. Hydrochloric acid
C. Sulphuric acid
D. Aqua regia
Ans: D. Aqua regia
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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