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Chemistry Class 12 Chapter 4
Group 5a and 6a Elements
Test 8
1.
Sulpher trioxide is not absorbed in water directly because?
Dilute acid is formed
Insoluble in water
Reaction is most exothermic
All of these
2.
Formation of sulphuric acid is carried out by?
Nelson process
Hall process
Thermite process
Contact process
3.
Which one has melting point below 0C?
Nitrogen
Arsenic
Bismuth
Phosphorus
4.
Which is not property of quartz?
Hard
Brittle
All of the above
Coloured solid
5.
Which one is not use of graphite?
For electrode forming
Lead pencil
Lubricant
Abrasive
6.
Phosphorus is a Greek word and its means?
Pure
Fire
Aqua
Light burning
7.
Poisoned allotropic form of phosphorus is?
White
Yellow
Black
Red
8.
Which element is different in physical appearance?
Arsenic
Antimony
Bismuth
Phosphorus
9.
Compounds of nitrogen and phosphorus are mostly?
All are possible
Ionic
Covalent
Polar
10.
Which substance has no phosphorus?
Nerves
Steel
Bone
Yolk of egg
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