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Chemistry

Chemistry
Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ?

Butane
Propane
Methane
Ethane

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Chemistry
The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is

geraniol
limonene
engenol
cineole

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Chemistry
Electric bulbs are filled with :

Carbon dioxide
Argon
Oxygen
Nitrogen

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Chemistry
The highest volume of gases in lower atmosphere is comprised of

Hydrogen
Oxygen
Nitrogen
Carbon dioxide

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

Natural Gas
Coal
Petroleum
Geothermal energy

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Chemistry
In surgery, metal pins are used for joining together broken bones. These metal pins remain uncorroded in the body. What is the material of these pins?

Copper
Iron
Aluminium
Titanium

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