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Chemistry

Chemistry
Slag is a name given for

Molten sand
Molten alumina
Molten calcium silicate
Molten iron

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Chemistry
Which one of the following mineral does not contain oxygen ?

Calcite
Haematite
Bauxite
Cryolite

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Chemistry
DDT and BHC may act as

Allergens
Asthematic agents
Carcinogens
None of these

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Chemistry
The working of a dry cell is based on

Electrolysis
Combination reaction
Spontaneous oxidation-reduction reaction
Decomposition reaction

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Chemistry
This group of alumino-silicate minerals is widely used in making electrical insulators

Bauxite
Mica
Manganese
Chromite

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Chemistry
The percentage of oxygen in air is approximately

0.78
0.01
0.21
1

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MORE MCQ ON Chemistry

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