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Chemistry

Chemistry
The alkaloid naturally found in coffee, cocoa and cola nut is

Morphine
Tannin
Cocaine
Caffeine

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Chemistry
Acid rain' is caused due to air - pollution by

Nitrous oxide and sulphur dioxide
Methane
Carbon monoxide
Carbon dioxide

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Chemistry
What is 'milk of magnesia' chemically?

Sodium bicarbonate
Calcium hydroxide
Magnesium hydroxide
Magnesium carbonate

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Chemistry
Cloud is a colloidal dispersion of

Fog in a dispersion medium of water
Mist in a dispersion medium of air
Air in a dispersion medium of water
Water drops in a dispersion medium of air

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Chemistry
Coal is formed from

Deposit of animal waste
Coke
Crude oil
Compressed and hardened biomass

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Chemistry
Which of the following appeared to be with a significant potential for accumulation through food chains ?

Carbary
DDT
Parathion
Lindane

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