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Chemistry

Chemistry
Number of neutrons in an atom of hydrogen is

One
Zero
Three
Two

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Chemistry
The important ore of aluminium is

Haematite
Fluorspar
Bauxite
Cryolite

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Chemistry
What is the covalency of nitrogen in ammonia molecule

3
2
5
4

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

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Chemistry
The Fungus which is used in the alcohol industry is

Yeast
Rhizopus
Mushroom
Candida Aibicans

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Chemistry
Synthetic detergents are prepared from

Potassium salts of higher fatty-acids
Sodium salts of higher fattyacids
Glycerides
Hydrocarbons of petroleum

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MORE MCQ ON Chemistry

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