NTPC CBT-2 Chemistry Quiz - 42

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Question 1:

Alkaline medium ________ rusting of iron 

Question 2:

What is the pH of acid rainwater ?

Question 3:

A sample of 'soft soap' contains-

Question 4:

Which of the following is used as a diluent for oxygen in modern diving apparatus ?

Question 5:

Which of the following is used for silvering of mirror ?