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Chemistry

Chemistry
Extensively used nitrogenous fertilizer is

Nitro-lime
Ammonium sulphate
Ammonium nitrate
Urea

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Chemistry
Main source of lead pollution is from

Tobacco
Sewage
Insecticides
Leaded gasoline

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Chemistry
Sulphur dioxide present in the industrial chimney exhaust causes

Reduction in plant's productivity owing to acid rain
Corrosion building materials
All of these
Respiratory and lung disease

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Chemistry
The mass of one Avogadro number of helium atom is

1.00 gram
4.00 gram
8.00 gram
4 x 6.02 x 1023 gram

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Chemistry
Hardness of the water is commonly measured in terms of

Calcium sulphate equivalents
Magnesium sulphate equivalents
Calcium carbonate equivalents
Magnesium carbonate equivalents

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Chemistry
Water gas is the combination of

CO and H2
CO2 and CO
CO2and H2
CO and H2O

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MORE MCQ ON Chemistry

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