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Chemistry Class 12 Chapter 4
Group 5a and 6a Elements
Test 10
1.
Which one is not property of sulphuric acid?
Endothermic reaction
Corrosive to skin
Soluble in water
Colourless oil liquid
2.
As an oxidizing and dehydrating agent acts?
Nitric acid
Sulphuric acid
None of these
Phosphoric acid
3.
50% of earth crust is composed of?
Nitrogen
Oxygen
Water
Silica
4.
Nitrous oxide when treated with Cu it gives?
Nitrogen
Water
Oxygen
CuO
5.
Sulpher trioxide absorbed by sulphuric acid and converts into?
Phosphoric acid
Water gas
Oleum
ulphurus acid
6.
Which oxide is used in ring test?
Nitrogen oxide
Nitrous oxide
Nitrogen trioxide
Nitrogen pentaoxide
7.
Au ,Pt ,&Ti do not reacts with?
Nitric acid
Hydrochloric acid
Sulphuric acid
Water
8.
Ferrous sulphate forms brown ring with?
Nitrogen pentaoxide
All of the above
Nitrogen dioxide
Nitrogen oxide
9.
Which is the property of oxygen?
Diamagnetic
Insoluble in water
Helps in combustion
Solid form
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