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Chemistry

Chemistry
Among the fuels given below, the one with highest calorific value is

Coke
Natural gas
Coal
Wood

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Chemistry
The most volatile of the given liquids is

Liquid He
Liquid
Liquid NH3
Ether

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Chemistry
The chemical used in embalming biological materials is

Gaseous formaldehyde
Ethylene glycol
Formaldehyde in water
Formaldehyde in methanol

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Chemistry
Which one of the following organic compounds has fruity smell?

Ester
Aldehyde
Alcohol
Ether

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Chemistry
Which is not an anasthetic agent in surgical operations?

Ether
Acetone
Chloroform
Nitrous oxide

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Chemistry
The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ?

12
Zero
6
18

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