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Chemistry

Chemistry
Colour imparted to the Bunsen flame by strontium salt is

Brick red
Bluish green
Crimson red
Apple-green

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Chemistry
The working of a dry cell is based on

Combination reaction
Spontaneous oxidation-reduction reaction
Electrolysis
Decomposition reaction

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Chemistry
The chemical name of quartz is

Sodium silicate
Calcium oxide
Calcium phosphate
Sodium phosphate

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Chemistry
________ is a by product of sewage treatment and can be decomposed to produce biogas

Sewage
Sludge
Sewer
Scum

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Chemistry
Which gas is used as fire extinguisher ?

Carbon monoxide
Sulphur dioxide
Carbon dioxide
Carbon suboxide

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Chemistry
The source of energy that causes the least global warming is

Petroleum
Coal
Natural Gas
Geothermal energy

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MORE MCQ ON Chemistry

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