NTPC CBT-2 Chemistry Quiz - 40

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Question 1:

Malachite is used as a pigments in paints to obtain

Question 2:

What is the most common element present in all Acids ?

Question 3:

Which of the following is used for killing rats ?

Question 4:

Which of the following fuels causes minimum air pollution?

Question 5:

Quartz crystals used in clocks are: