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Chemistry

Chemistry
Electric fuse is an alloy of

Tin and lead
Copper and iron
Zinc and lead
Carbon and tin

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Chemistry
Nitric acid does not react with

Iron
Gold
Zinc
Copper

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Chemistry
What is 'milk of magnesia' chemically?

Magnesium carbonate
Calcium hydroxide
Sodium bicarbonate
Magnesium hydroxide

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Chemistry
Soap helps in better cleaning of clothes because

It reduces the surface tension of solution
It absorbs the dirt
Soap acts like catalyst
It gives strength to solution

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Chemistry
Major portion of the earth’s crust is mainly constituted by

Oxygen and Silicon
Silicon and Aluminium
Silicon and Iron
Oxygen and Iron

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Chemistry
The smog is essentially caused by the presence of

O2 and N2
Oxides of N and S
O2 and O3
O3 and N2

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MORE MCQ ON Chemistry

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