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Chemistry

Chemistry
The main constituent of biogas is

Oxygen
Methane
Acetic acid
Methyl alcohol

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Chemistry
Cooking gas is a mixture of

Carbon dioxide and oxygen
Butane and propane
Carbon monoxide and carbon dioxide
Methane and ethylene

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Chemistry
The percentage of oxygen in air is approximately

1
0.01
0.78
0.21

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Chemistry
In the periodic table of elements, on moving from left to right across a period, the atomic radius

Increases
Does not follow a definite pattern
Decreases
Remains unchanged

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Chemistry
The new strain of bacteria produced by biotechnology in alcohol industry is

Escherichia coli
Bacillus subtilis
Pseudomonas putida
Saccharomyces cerevisiae

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Chemistry
Spirit in contact with body gives cool sensation because it is :

Liquid
Highly volatile
Transparent
A good conductor

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MORE MCQ ON Chemistry

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