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Chemistry

Chemistry
Slag is a name given for

Molten alumina
Molten iron
Molten calcium silicate
Molten sand

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Chemistry
German silver used for making utensils is an alloy of

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

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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
Readily miscible with oxygen
Lighter than nitrogen
Less poisonous than nitrogen

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Chemistry
The length of double bond is _______ than single bond

Shorter
None of these
Of same lenght
Longer

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Chemistry
Glycol is added to aviation gasoline because it

Reduces consumption of petrol
Prevents freezing of petrol
Increases efficiency of petrol
Reduces evaporation of petrol

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Chemistry
Vulcanized rubber contains sulphur

10-15%
0.02
7-9%
3-5%

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MORE MCQ ON Chemistry

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