Chemistry MCQS for Class 10
Which one is not the fraction of residual oil?
Fuel oil
Asphalt
Paraffin wax
Coke
Concentration of the copper ore is carried out by:
Roasting
Forth flotation
Distillation
Calcinations
Chalco-Pyrite is an ore of:
Silver
Iron
Aluminium
Copper
Concentration of copper are is carried out by process.
Roasting
Forth floatation
Gravity sepration
Electrostatic separation
Concentration is a .
cooling technique
Mixing technique
Separating technique
Boiling technique
Froth flotation process is used to concentrate the ore on:
Density basis
Wetting basis
Concentration basis
Magnetic basis
How many % age of urea is used as fertilizers?
98%
90%
80%
95%
The number of carbon atoms present in diesel oil.
15-Oct
13-15
15-Dec
15-Nov
Imperial chemical industries was established in.
1942
1944
1950
1990
The number of carbon atoms present in gasoline or petrol.
10-Aug
10-May
10-Jun
10-Jul
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