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Chemistry

Chemistry
Which among the following is found in chlorophyll ?

A l3+
Mg2+
Ca2+
Fe2+

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Chemistry
Oxide of sulphur present in the atmosphere are washed down by rains to cause :

Depletion of fossil fuel reserves
Industrial smog formation
Eutrophication in lakes
Lowering of pH of soil

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Chemistry
The pair of compounds used as anaesthetic in medicines :

Nitrogen dioxide, ether
Nitrous oxide, Chloroform
Ether, Ammonia
Chloroform, Nitrogen dioxide

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Chemistry
Coal is formed from

Coke
Deposit of animal waste
Compressed and hardened biomass
Crude oil

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Chemistry
Aspirin is chemically known as

Acetylsalicylic acid
Alkylsalicylic acid
Hydroxysalicylate
Methyl salicylate

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Chemistry
For extinguishing fire, we use

Hydrogen
Carbon Dioxide
Carbon Monoxide
Marsh gas

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MORE MCQ ON Chemistry

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