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Chemistry

Chemistry
The gas used for artificial fruit ripening of green fruit is

Ethane
Methane
Ethylene
Acetylene

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Chemistry
Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ?

Propane
Methane
Butane
Ethane

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Chemistry
The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is

4.84 x 1017
1.568 x 103
6.023 x 1023
6.023 x 1019

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Chemistry
What is the atomic number of Oxygen

22
5
12
8

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Chemistry
Highly toxic gas which causes headache, visual difficulty, paralysis and even death is

All of these
CO
O3
CO2

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Chemistry
The heat energy produced when the human body metabolises 1 gram of fat is

1 KJ
39 KJ
30 KJ
29 KJ

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MORE MCQ ON Chemistry

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