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Chemistry

Chemistry
Electric fuse is an alloy of

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

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Chemistry
Basicity of boric acid, H3BO3 is

3
4
5
2

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Chemistry
Phosphorus is kept in water because

Its critical temperature is low
Its ignition temperature is very high
Its critical temperature is high
Its ignition temperature is very low

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Chemistry
The chemical used in embalming biological materials is

Formaldehyde in methanol
Ethylene glycol
Gaseous formaldehyde
Formaldehyde in water

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Chemistry
Earth’s atmosphere is an envelope of gases extending to a height of

100 km
200 km
300 km
150 km

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Chemistry
Helium is added to the oxygen supply of deep sea divers because it is

Less soluble in blood than nitrogen at high pressure
Lighter than nitrogen
Less poisonous than nitrogen
Readily miscible with oxygen

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MORE MCQ ON Chemistry

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