NTPC CBT-2 Chemistry Quiz - 28

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Question 1:

Fresh Nitric acid is colourless , after sometime brown fumes are observed .These brown fumes is due to formation of

Question 2:

In electrochemical cell, the direction of current flow-

Question 3:

Monazite is an ore of?

Question 4:

Which of the following is responsible for pumping out tears fluid in the eye ?

Question 5:

How many Sigma and Pi bonds in Benzene?