NTPC CBT-2 Chemistry Quiz - 18

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Question 1:

Colligative properties of a solution depends upon-

Question 2:

Which of the following compound is prepared by contact process?

Question 3:

Zinc fails to evolve hydrogen gas on reacting with dilute nitric acid because-

Question 4:

One metal dissolved in another is called-

Question 5:

Who predicted the existence of some yet to be discovered elements on the basis of gaps in his periodic table ?

Question 6:

Which of the following is used as a lubricant for the fast moving parts of machinery?

Question 7:

Which of the following is sink for CO?

Question 8:

The properties of eka-boron predicted by Mendeleev are the same as the properties of later discovered element

Question 9:

Aquatic animals can live safely during cold weather as

  1. Density of ice is less than water therefore it floats
  2. Ice provide insulation
  3. Water remains as liquid under the surface of ice

Question 10:

Ozone is depleted by

  1. CF2Cl2
  2. CBr2Cl2
  3. CF2Br2
  4. CH2Cl2