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Chemistry

Chemistry
Quartz is made of

Calcium Silicate
Calcium Sulphate
Sodium Sulphate
Sodium Silicate

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Chemistry
Mixture can be

Both A and B
Heterogeneous
Pure substance
Homogeneous

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Chemistry
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

liquation
levigation
leaching
magnetic separation

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Chemistry
Citric acid is present in free form in

Milk
Tamarind
Lemon
Apple

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Chemistry
The graphite rods in the nuclear reactor

convert fast moving neutrons into thermal neutrons
produce neutrons
react with U to release energy
undergo combustion which triggers the nuclear fission

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Chemistry
An acid having basicity one is

Sodium dihydrogen phosphate
Disodium hydrogen phosphate
Phosphoric acid
Sodium phosphate

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