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Chemistry

Chemistry
The weight of 6.023 × 1022 atoms of carbon is

120 gms
1.2 gms
0.12 gms
12 gms

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Chemistry
Slag is a name given for

Molten calcium silicate
Molten alumina
Molten sand
Molten iron

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Chemistry
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

liquation
magnetic separation
levigation
leaching

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Chemistry
Which one of the following vegetable oils is used in the manufacture of paints?

Palm oil
Sunflower oil
Cottonseed oil
Linseed oil

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Chemistry
The molecular mass of a gas is

Twice its vapour pressure
Not related to its vapour pressure
Equal to its vapour pressure
Half its vapour pressure

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Chemistry
Which one of the following is most acidic

CaO
MgO
Na2O
Al22O3

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