NTPC CBT-2 Chemistry Quiz - 16

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Question 1:

Silver bromide is stored in dark bottles because

Question 2:

Which of the following statements is incorrect ?

1) Alloys are mixture .

2) Alloys can be separated into their component by physical methods

Question 3:

A salt is a substance formed by the reaction of an acid with a base. Which of the following salt is also known as table salt?

Question 4:

Malachite is used as a pigments in paints to obtain

Question 5:

Which one of the following is not used as a raw material in the manufacture of glass ?


Question 6:

Which of the following sodium compounds is used for softening hard water?

Question 7:

Calcium carbonate undergoes a decomposition reaction, resulting in the formation of______.

  1. Quick lime 
  2. Slaked lime
  3. Carbon dioxide 
  4. Water

Question 8:

Modern periodic table is based on atomic number . The experiment which proved the significance of atomic number is 

Question 9:

Empirical formula of Naphthalene is-

Question 10:

Which of the following atmospheric layer is used in the long distance communications?

serach-testwale
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