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Chemistry

Chemistry
An example of replenishable energy source is–

Lignite
Biomass
Petroleum
Coal

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Chemistry
The metal compound commonly found in Sindhoor or Kumkum is based on

Tin
Zinc
Lead
Copper

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Chemistry
In upper layer of atmosphere ozone is formed by

Subjecting oxygen to high pressure
The combination of oxygen molecules
The action of nitrogen on oxygen in atmosphere
The action of ultraviolet rays on oxygen

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Chemistry
Water gas is the mixture of

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

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Chemistry
Quartz is a crystalline form of

Alumina
Silica
Glass
Limestone

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Chemistry
The octane number of zero is assigned to

iso-octane
n-heptane
3-methyl octane
2-methyl octane

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MORE MCQ ON Chemistry

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