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Chemistry

Chemistry
The polymer used in making plastic crockery is

Nylon
Decron
Melamine
Bakelite

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Chemistry
Iron is extracted from

Haematite
Dolomite
Bauxite
Cinnabar

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Chemistry
The weight of 6.023 × 1022 atoms of carbon is

120 gms
0.12 gms
12 gms
1.2 gms

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Chemistry
Milk is a colloidal system in which:

Water is dispersed in fat
Fat is dissolved
Fat is dispersed in water
Fat and water are dispersed in each other

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Chemistry
Which variety of coal contains recognisable traces of the original plant material ?

Lignite
Peat
Bitumen
Anthracite

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Chemistry
Iodine value is used to estimate

Alkali content in oil
Hydroxyl groups in oil
Carboxylic groups in oil
Unsaturation in oil

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