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Chemistry

Chemistry
What material is used to make electric heater coil ?

Copper
Silver
Nichrome
Iron

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Chemistry
The number of hydrogen bonds between guanine and cytosine in DNA is

1
2
4
3

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Chemistry
Helium gas is used in gas balloons instead of hydrogen gas because it is

Lighter than hydrogen
More abundant than hydrogen
Non-combustible
More stable

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Chemistry
Green house effect is accelerated by

Rapid industrialization
Increased transportation activity
All of these
Deforestation

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Chemistry
The Bhopal gas tragedy was caused by the gas

Methyl Cyanide
Methyl Iso Cyanide
Methyl Iso Cyanate
Methyl chloride

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Chemistry
The mass number of an atom is equal to

the number of protons
the number of protons and electrons
the number of neutrons
the number of nucleons

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MORE MCQ ON Chemistry

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