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Chemistry

Chemistry
Which one out of the following helps in burning ?

Nitrogen
Carbon dioxide
Oxygen
Carbon monoxide

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Chemistry
The electronic configuration of an atom having atomic number ‘20’ is

2, 8, 8, 2
2, 6, 8, 4
2, 8, 10
2, 10, 8

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Chemistry
Which gas is used for converting vegetable oils into saturated fats ?

H2
SO2
O2
Cl2

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Chemistry
Chemical composition of cement is

Limestone, Clay and Gypsum
Limestone and Clay
Clay and Gypsum
Limestone and Gypsum

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Chemistry
The value of Avogadro Number is

6.023 × 1022
6.023 × 1023
6.023 × 1024
6.023 × 1025

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Chemistry
The substance that is added to make natural rubber strong and more bouncy is

Sulphur
Polythene
Chlorine
Sponge

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MORE MCQ ON Chemistry

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