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Chemistry

Chemistry
The natural resource, known as black gold is

Coal
Platinum
Lead
Tin

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Chemistry
How many atoms of oxygen are in a glucose molecule

4
10
3
6

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Chemistry
The two metal ions that cause hardness to water are:

Calcium, Magnesium
Sodium, Magnesium
Sodium, Calcium
Sodium, Potassium

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Chemistry
Many people died in London in 1952 as result of air pollution producing

Sleet
Fog
Smog
Mist

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Chemistry
Synthetic detergents are prepared from

Sodium salts of higher fattyacids
Hydrocarbons of petroleum
Potassium salts of higher fatty-acids
Glycerides

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Chemistry
Ultra purification of a metal is done by :

Slugging
Zone melting
Leaching
Smelting

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MORE MCQ ON Chemistry

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