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Chemistry

Chemistry
The National Chemical Laboratory is situated in

Bangalore
Pune
Patna
New Delhi

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Chemistry
Which of the following laser types is used in a laser printer?

Gas laser
Dye laser
Semiconductor laser
Excimer laser

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Chemistry
Biofertilizers convert nitrogen to ________ .

Ammonia
Nitrogenase
Nitrates
Amino acids

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Chemistry
Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has

Smaller atomic radius
High nuclear charge
Stable half filled 2p sub level
High bond dissociation energy

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Chemistry
The heaviest naturally occurring element is:

Thorium
Uranium
Mercury
Polonium

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Chemistry
Ozone layer of atmosphere absorbs:

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

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MORE MCQ ON Chemistry

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