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Chemistry

Chemistry
Which one is not a primary greenhouse gases in the Earth's atmosphere

Nitrogen
Carbon dioxide
Ozone
Methane

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Chemistry
Diamonds are glittering and attractive because light incident on them undergoes

Hundred percent transmission
Multiple surface reflections
Highest refraction
Multiple internal reflections

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Chemistry
Ozone depletion in the stratosphere is mainly caused by

Chlorogluorocarbons
NO
NO2
SO2

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Chemistry
The element which is used for vulcanizing rubber

Sulphur
Silicon
Phosphorus
Bromine

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Chemistry
What material is used to make electric heater coil ?

Copper
Iron
Silver
Nichrome

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Chemistry
Which one of the following is used as an anti-freeze for the automobile engines ?

Propyl alcohol
Ethanol
Methanol
Ethylene glycol

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