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Chemistry

Chemistry
Percentage of lead in lead pencils is

80
31-66
40

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Chemistry
Pyrethrin used in mosquito coil is obtained from

A fungus
An insect
A bacterium
A seed plant

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Chemistry
The major constituent of air is

oxygen
nitrogen
hydrogen
carbon dioxide

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Chemistry
Non-stick kitchenwares are coated with

Teflon
Graphite
Silicon
PVC

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Chemistry
German silver used for making utensils is an alloy of

Copper, nickel, aluminium
Copper, zinc, nickel
Copper, zinc, aluminium
Copper, silver, nickel

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Chemistry
Soap is prepared by boiling caustic soda with

Alcohol
Glycerine
Fats
Kerosene oil

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MORE MCQ ON Chemistry

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