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Chemistry

Chemistry
Main source of lead pollution is from

Tobacco
Leaded gasoline
Insecticides
Sewage

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Chemistry
Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ?

Methane
Butane
Propane
Ethane

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Chemistry
Percentage of carbon in steel ranges from

1.5 to 3.0
4.0 to 6.0
0.1 to 1.5
3.0 to 4.0

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Chemistry
Milk tastes sour when it is left in open for some time. This happens due to the formation of

Carbonic acid
Lactic acid
Acetic acid
Citric acid

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Chemistry
Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful

CO2 in the air
Solar ultraviolet radiation
Solar infrared radiation
SO2 in the air

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Chemistry
Dry ice is the solid form of :

Nitrogen
Carbon di–oxide
Air
Water

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MORE MCQ ON Chemistry

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