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Which one of the following is not radioactive element?
1) Uranium
2) Radium
3) Thorium
4) Cadmium

Isotopes of an element have the same:
1) Atomic mass
2) Atomic number
3) ...

Water pipes are apt to burst in cold weather because:
1) They contract due to cold ...

A mixture of solid Al 2 O 3 and Fe 2 O 3 can be separated by the method of ...

The first spacecraft to make a soft landing on the moon was launched by:
1) USA
2) ...

Man has ....... chromosomes:
1) 48
2) 46
3) 44
4) 42

MOCK TEST SERIES

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