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Chemistry

Chemistry
Which of the following is used in making smoke bombs?

Phosphorus
Carbon
Sulphur
Hydrogen

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Chemistry
Among the following iron ores, the highest percentage of iron content is found in–

Limnonite
None of these
Haemetite
Magnetite

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Chemistry
The main chemical constituent of clay is

zeolites
aluminium silicate
silicon oxide
aluminium borosilicate

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Chemistry
Which of the following metals is used in Space Crafts to withstand high temperatures ?

Pb
Ti
Fe
Ni

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Chemistry
The gas that usually causes explosions in coal mines is

Methane
Air
Carbon monoxide
Hydrogen

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Chemistry
Tetra ethyle lead (TEL) is

A catalyst in burning fossil fuel
An antioxidant
An antiknock compound
A reductant

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