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Chemistry

Chemistry
The chief constituent of natural gas is:

Propane
Nitrogen
Helium
Methane

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Chemistry
The noble gas used in radiotherapy is

Neon
Radon
Xenon
Argon

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Chemistry
Total number of naturally occurring elements

98
110
92
62

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Chemistry
Vinegar is ________ .

Glacial formic acid
Glacial acetic acid
Diluted acetic acid
Diluted formic acid

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Chemistry
Water gas is the combination of

CO and H2
CO2 and CO
CO2and H2
CO and H2O

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Chemistry
Which of the following acids serves as an electrolyte in a lead storage battery?

Sulphuric acid
Lactic acid
Hydrochloric acid
Nitric acid

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