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Chemistry

Chemistry
Which of the following is the major constituent of LPG?

Ethane
Butane
Propane
Methane

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Chemistry
'Atomic theory' of matter was given by

Dalton
Newton
Pascal
Avogadro

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Chemistry
Silicon is used in

Solar energy devices
Transistors
All of these
Semiconductors

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Chemistry
Which of the following vegetable oils does not contain essential fatty acids ?

Coconut oil
Mustard oil
Sunflower oil
Groundnut oil

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Chemistry
Acid rain is caused by the pollution of environment by

Carbon dioxide and Nitrogen
Nitrous oxide and Sulphur dioxide
Ozone and Carbon dioxide
Carbon monoxide and Carbon dioxide

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Chemistry
What is the principal ore of aluminium ?

Dolomite
Lignite
Copper
Bauxite

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