TNPSC Group 1, 2 Chemistry Question Paper with Answers - 1
Question: 1
Which of the toxic heavy metals is found in modern tannery industries?
(A) Lead
(B) Zinc
(C) Nickel
(D) Chromium
Ans: D
Chromium
Question: 2
Which of the following is not known as greenhouse gas?
(A) Hydrogen
(B) Methane
(C) Carbon dioxide
(D) Nitrous oxide
Ans: A
Hydrogen
Question: 3
The first synthetic fiber made by man was
(A) Polyester
(B) Reyon
(C) Nylon
(D) Terycot
Ans: C
Nylon
Question: 4
Which one of the following gases is supporter of combustion?
(A) Oxygen
(B) Hydrogen
(C) Carbon dioxide
(D) Nitrogen
Ans: A
Oxygen
Question: 5
Which of the following is the lightest gas?
(A) Ammonia
(B) Nitrogen
(C) Hydrogen
(D) Carbon dioxide
Ans: C
Hydrogen
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