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Chemistry

Chemistry
Main source of lead pollution is from

Insecticides
Leaded gasoline
Tobacco
Sewage

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Chemistry
Which of the following is not a chemical reaction'?

Burning of coal
Digestion of food
Conversion of water into steam
Burning of paper

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Chemistry
Phosphorus is kept in water because

Its ignition temperature is very low
Its ignition temperature is very high
Its critical temperature is low
Its critical temperature is high

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Chemistry
During fermentation of sugar, the compound which is always formed is :

Ethyl Alcohol
Ethylene
Methyl Alcohol
Acetic Acid

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Chemistry
Depletion of ozone layer causes

Breast cancer
Skin cancer
Blood cancer
Lung cancer

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Chemistry
The ore of Aluminium is

Hematite
Chalco pyrites
Fluorspar
Bauxite

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MORE MCQ ON Chemistry

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