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Chemistry

Chemistry
Which of the following is the petroleum wax ?

Carnauba wax
Jojoba wax
Paraffin wax
Bees wax

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Chemistry
Fertiliser having high nitrogen content is :

Calcium citrate
Ammonium sulphate
Ammonium nitrate
Urea

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Chemistry
The percentage of nitrogen present in ammonium sulphate is :

0.27
0.25
0.305
0.18

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Chemistry
The chemical that is used to ripen mangoes is

Calcium carbonate
Calcium sulphide
Calcium chloride
Calcium carbide

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Chemistry
The compound to which H2 does not add is

Tetra –9 – phenanthrylethylene
Tetra – a –naphthylethylene
Tetraphenyl ethylene
Biphenyl ethylene

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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

leaching
levigation
magnetic separation
liquation

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MORE MCQ ON Chemistry

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