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Chemistry

Chemistry
Detergents clean surfaces on the principle of

Floatation
Elasticity
Viscosity
Surface tension

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Chemistry
Cement containing excess amount of lime

Is quick setting
Becomes more strong
Cracks during setting
Is slow setting

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Chemistry
Antacids are found in drugs that give relief to

Acne
Eye sight
Headache
Stomach ache

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Chemistry
The gas that usually causes explosions in coal mines is

Carbon monoxide
Air
Methane
Hydrogen

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Chemistry
The cathode of a lead storage battery is made up of

Lead
Lead oxide
Manganese dioxide
Zinc

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Chemistry
Which of the following is used in welding broken pieces of iron rails and machine parts?

Aluminium sulphate
Solder
None of these
Aluminium powder

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