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Chemistry

Chemistry
DDT and BHC may act as

Asthematic agents
Allergens
None of these
Carcinogens

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Chemistry
The percentage of nitrogen present in ammonium sulphate is :

0.18
0.25
0.305
0.27

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Chemistry
A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed?

From pink to blue-green
From brown to blue-black
From blue to pink
From brown to orange-red

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Chemistry
The process of improving the quality of rubber by heating it with sulphur is called.

Sulphonation
Galvanization
Acceleration
Vulcanization

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Chemistry
Non-stick kitchenwares are coated with

PVC
Silicon
Graphite
Teflon

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Chemistry
What is the second largest component in milk ?

Minerals
Water
Fat
Sugar

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MORE MCQ ON Chemistry

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