NTPC CBT-2 Chemistry Quiz - 45

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Question 1:

Bleaching liquors are inorganic pollutants produced mainly by which industry ?

Question 2:

Which science is sometimes called ‘central science’?

Question 3:

Which of the following elements exist both as cation and anion in its free state-

Question 4:

Which of the following gases can be used for storage?

Question 5:

Bristles of tooth brush are made from: