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Chemistry

Chemistry
The element with highest ionization potential is

Oxygen
Boron
Helium
Carbon

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Chemistry
The presence of ozone in the stratosphere is responsible for

Increasing the average global temperature in recent years
Supplying oxygen for people travelling in jets
Higher rate of photosynthesis
Checking the penetration of ultra-violet rays to the earth

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Chemistry
Ozone layer of atmosphere absorbs:

All radiations of Light
Infra-red rays
Ultraviolet rays
Cosmic rays.

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Chemistry
How many electrons can be accommodated in d-orbital

10
3
6
8

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Chemistry
The most malleable metal is

silver
iron
gold
platinum

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Chemistry
Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be

1 : 1 : 1
2 : 16 : 2
2 : 16 : 1
1 : 16 : 2

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MORE MCQ ON Chemistry

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