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Chemistry

Chemistry
Fertiliser having high nitrogen content is :

Calcium citrate
Ammonium sulphate
Urea
Ammonium nitrate

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Chemistry
The main buffer system of the human blood is

H2CO3 - HCO3
H2CO3 - CO32-
NH2CONH2 - NH2CONH+
CH3COOH - CH3COO-

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Chemistry
Nylon threads are made of

Polyester polymer
Polyamide polymer
Polysaccharide
Polyvinyl polymer

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

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Chemistry
Which of the following is not a natural source of hydrocarbon?

Coal
Natural Gas
Petroleum
Mica

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Chemistry
The material known in commerce as Terylene is a

Natural fibre
Blend of cotton and silk
Synthetic fibre
Modified natural fibre

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MORE MCQ ON Chemistry

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