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Chemistry

Chemistry
Sea weeds are important source of

Bromine
Iron
Iodine
Chlorine

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Chemistry
In chemical terms, what are alums used for purifying water for drinking purposes ?

Double sulphates
Nitrates of aluminium
Double nitrate
Hydrated chlorides

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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
Copper
Aluminium
Zinc

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Chemistry
KMnO4 can be used as a/an

Pesticide
Insecticide
Fertiliser
Disinfectant

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Chemistry
One carat of diamond is equal to

200 mg
250 mg
150 mg
100 mg

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Chemistry
Oxygen which is vital for life is a product of photosynthesis and comes from

Oxides of mineral elements
Carbonates from soil
Carbon dioxide
Water

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MORE MCQ ON Chemistry

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