Alums are used for from Chemistry Hydrogen

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

131.

In which of the following molecules is hydrogen bridge bond present?

  • Water

  • Inorganic benzene

  • Diborane

  • Methanol


132.

Blackened oil painting can be restored into original form by the action of

  • Cl2

  • BaO2

  • H2O2

  • MnO2


133.

Which gas is evolved by the treatment of magnesium with very dilute solution of HNO3?

  • N2

  • NO2

  • H2

  • H2O


134.

How many neutrons are present in tritium nucleus?

  • 2

  • 3

  • 1

  • 0


Advertisement
135.

The high boiling point of water is due to which reason:

  • co-ordinate bonding

  • covalent bond

  • electrostatic force of attraction

  • hydrogen bonding


136.

The ortho and para hydrogen differ in respect of which of the following ?

  • In the molecular weight

  • In the nature of spin of protons

  • In the nature of spin of electrons

  • In the number of protons


137.

Permanent hardness can be removed by adding

  • Cl2

  • Na2CO3

  • Ca(OCl)Cl

  • K2CO3


138.

Water gas is :

  • CO + N2

  • CO + CO2 + CH4

  • CO2 + N2

  • CO + H2


Advertisement
Advertisement

139.

Alums are used for

  • tanning of leather

  • coagulation of blood

  • purification of water

  • all of the above


C.

purification of water

Potash alum is used for tanning of leather, as mordant in dyeing and and calico printing, for sizing paper, as a syptic to stop bleeding and purification of water.


Advertisement
140.

The method used to remove temporary hardness of water is :

  • Clark's method

  • Ion-exchange method

  • Synthetic resins method

  • Calgon's method


Advertisement