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Chemistry

Chemistry
Rock salt is a mineral containing

Magnesium
Potassium
Iron
Sodium

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Chemistry
In arc welding, Argon is used because of its

High calorific value
High flammability
Ability to lower the melting point of the metal
Low reactivity with metal

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Chemistry
Ozone depletion in the stratosphere is mainly caused by

NO
Chlorogluorocarbons
NO2
SO2

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Chemistry
For extinguishing fire, we use

Marsh gas
Carbon Dioxide
Carbon Monoxide
Hydrogen

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Chemistry
Which of the following is also used as a Bio fertilizer?

Ammonia
None of these
Uric Acid
Urea

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Chemistry
Water gas is the mixture of

Carbon monoxide and hydrogen
Carbon dioxide and hydrogen
Carbon monoxide and nitrogen
Carbon dioxide and nitrogen

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MORE MCQ ON Chemistry

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