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Chemistry

Chemistry
The drug ‘Marijuana’ is a

Sedative
Mental stimulant
Hallucinating substance
Tranquillizer

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Chemistry
Conduction band electrons have more mobility than holes because they

Are lighter
Need less energy to move them
Experience collision less frequently
Have negative charge

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Chemistry
The most pure form of Carbon among the options is

Graphite
Wood Charcoal
Lampblack
Anthracite

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Chemistry
Mercury is emitted into air by

Steam engine
Burning coal
Burning garbage
Coal fire

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Chemistry
One carat of diamond is equal to

150 mg
100 mg
250 mg
200 mg

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Chemistry
Physico-chemical characteristics of water in water sources undergo changes due to

Auatic fungi
Effluents
Aquatic macrophytes
Evapotranspiration

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MORE MCQ ON Chemistry

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