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Chemistry

Chemistry
The depletion of ozone layer is due to

Chloro fluoro carbon
Sulphur dioxide
Ethane
Carbon dioxide

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Chemistry
The first organic compound synthesised in the laboratory was

Lactic acid
Glucose
Urea
Uric acid

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Chemistry
If the sewage is fully oxidized, the nitrogen is in the form of

Ammonia
Nitrates
Nitramines
Nitrites

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Chemistry
The method that cannot be used for removing permanent hardness of water is

adding sodium carbonate
adding caustic soda
boiling
distillation

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Chemistry
A metal is exposed to the atmosphere for sometime. It becomes coated with green carbonate. The metal must be

Silver
Zinc
Copper
Aluminium

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Chemistry
An acid having basicity one is

Phosphoric acid
Disodium hydrogen phosphate
Sodium dihydrogen phosphate
Sodium phosphate

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MORE MCQ ON Chemistry

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