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Chemistry

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

Propane
Butane
Ethane
Methane

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Chemistry
The example of oligosaccharide is

Cellulose
Ribose
Glucose
Sucrose

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Chemistry
White phosphorus is always kept under

Water
Ether
Kerosene
Benzene

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Chemistry
Alcohol prepared by the distillation of wood is :

Methyl alcohol
Ethyl alcohol
Glycerol
Propyl alcohol

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Chemistry
Type metal used in printing press is an alloy of

Lead and bismuth
Lead and copper
Lead and antimony
Lead and zinc

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Chemistry
Conduction band electrons have more mobility than holes because they

Are lighter
Experience collision less frequently
Need less energy to move them
Have negative charge

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