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Chemistry

Chemistry
Magnetite is

2Fe2O3. 3H2O
Fe2O3
FeCO3
Fe3O4

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Chemistry
Which of the following fibres catches fire least ?

Terricot
Cotton
Rayon
Nylon

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Chemistry
Water gas is the mixture of

Carbon monoxide and nitrogen
Carbon dioxide and hydrogen
Carbon dioxide and nitrogen
Carbon monoxide and hydrogen

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Chemistry
Trinitrotoluene is

Used as an abrasive
Used to melt metals
Used as an explosive
Used to fuse two metals

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Chemistry
Which one of the following statement is correct ?Ozone is found in the earth's atmosphere mostly between

10 and 20 km
20 and 50 km
50 and 100 km
5 and 10 km

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Chemistry
Which gas is used for converting vegetable oils into saturated fats ?

H2
SO2
Cl2
O2

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