Question 1.
The components of water can be separated by
A. Physical methods
B. Chemical methods
C. Both A and B
D. They can not be separated
Ans: B. Chemical methods
Question 2.
Rock salt is a mineral containing
A. Potassium
B. Magnesium
C. Sodium
D. Iron
Ans: C. Sodium
Question 3.
Chemical name of common salt is
A. Sodium Chloride
B. Sodium Bicarbonate
C. Sodium
D. Sodium Oxide
Ans: A. Sodium Chloride
Question 4.
Chemical name of bleaching powder is :
A. Calcium chlorate
B. Calcium hypochlorite
C. Calcium chloro hypochlorite
D. Calcium bi chloride
Ans: B. Calcium hypochlorite
Question 5.
Which of the following is not a chemical reaction?
A. Burning of paper
B.Digestion of food
C. Conversion of water into steam
D. Burning of coal
Ans: C. Conversion of water into steam
Question 6.
Baking soda is :
A. Potassium carbonate
B. Sodium hydroxide
C. Sodium carbonate
D. Sodium bicarbonate
Ans: D. Sodium bicarbonate
Question 7.
Nitrogen forms a variety of compounds in all oxidation states ranging from
A. –3 to +5
B. –3 to +3
C. –3 to +4
D. –3 to +6
Ans: A. –3 to +5
Question 8.
The chemical formula of the laughing gas is
A. NO
B. N2O
C.NO2
D. N2O3
Ans: B. N2O
Question 9.
Chemical formula of washing soda is
A. Na2SO4.10H2O
B. NaHCO3
C. Na2CO3.10H2O
D. Ca(OH)2
Ans: C. Na2CO3.10H2O
Question 10.
Sodium Carbonate is commonly known as
A. Baking Soda
B. Washing Soda
C. Caustic Soda
D. Caustic Potash
Ans: B. Washing Soda
Question 11.
What is the covalency of nitrogen in ammonia molecule
A. 2
B. 3
C. 4
D. 5
Ans: B. 3
Question 12.
The common name for the compound having formal NaOH is
A. Caustic soda
B. Caustic potash
C. Soda ash
D. Sodium hydroxide
Ans: A. Caustic soda
Question 13.
What is the chemical name for ‘Baking Soda’ ?
A. Sodium carbonate
B. Sodium bicarbonate
C. Sodium nitrite
D. Sodium nitrate
Ans: B. Sodium bicarbonate
Question 14.
Brine refers to :
A. Salt water
B. Sweet water
C. Pure water
D. Starch water
Ans: A. Salt water
Question 15.
What is ‘milk of magnesia’ chemically?
A. Magnesium carbonate
B. Sodium bicarbonate
C. Calcium hydroxide
D. Magnesium hydroxide
Ans: D. Magnesium hydroxide
Question 16.
Philosopher’s wool is chemically
A. Aluminium oxide
B. Magnesium oxide
C. Zinc oxide
D. Calcium oxide
Ans: C. Zinc oxide
Question 17.
The chemical name of ‘Common salt’ is
A. Sodium chloride
B. Sodium nitrate
C. Ammonium chloride
D. Calcium chloride
Ans: A. Sodium chloride
Question 18.
The chemical name of baking soda is
A. Sodium carbonate
B. Sodium bicarbonate
C. Sodium chloride
D. Sodium nitrate
Ans: B. Sodium bicarbonate
Question 19.
Which one of the following is a micro-element ?
A. Chlorine
B. Hydrogen
C. Nitrogen
D. Oxygen
Ans: A. Chlorine
Question 20.
What is the atomic number of Oxygen?
A. 5
B. 8
C. 12
D. 22
Ans: B. 8
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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