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Chemistry

Chemistry
The most suitable unit for expressing nuclear radius is :

Fermi
Nanometre
Micron
Angstrom

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

1 KJ
29 KJ
39 KJ
30 KJ

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Chemistry
In arc welding, Argon is used because of its

Ability to lower the melting point of the metal
Low reactivity with metal
High flammability
High calorific value

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Chemistry
Which one of the following is not a characteristic feature of alloys? They are

Compounds
Mixtures
Homogeneous systems
Solutions

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Chemistry
The most abundant constituent of atmospheric air is :

Carbon
Hydrogen
Nitrogen
Oxygen

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Chemistry
Vulcanization of rubber is carried out by adding

Phosphorus
Carbon
Ozone
Sulphur

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MORE MCQ ON Chemistry

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