NTPC CBT-2 Chemistry Quiz - 24

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Question 1:

The black tarry material obtained from coal on strong heating in the absence of air is 

Question 2:

Ammonium phosphate is an example of 

  1. Mixed fertilizer
  2. Synthetic fertilizer
  3. Natural fertilizer
  4. Manures

Question 3:

In the modern periodic table, which group elements have a complete outer shell?

Question 4:

Which of the following elements do not show variable oxidation state?

Question 5:

Which has maximum number of atoms?