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Chemistry

Chemistry
DDT and BHC may act as

Allergens
Carcinogens
Asthematic agents
None of these

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Chemistry
The chief constituent of natural gas is:

Propane
Methane
Helium
Nitrogen

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Chemistry
Hard steel contains

0.1 to 0.4 per cent carbon
2 to 5 per cent carbon
0.01 to 0.04 per cent carbon
0.5 to 1.5 per cent carbon

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Chemistry
Which among the following is pure matter ?

Iron
Air
Brass
Carbon–dioxide

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Chemistry
The inert gases are ____ in water

sparingly soluble
None of these
soluble
insoluble

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Chemistry
The heaviest naturally occurring element is:

Thorium
Mercury
Uranium
Polonium

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MORE MCQ ON Chemistry

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