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Physics

Physics
Radiocarbon dating technique is used to estimate the age of

rocks
soil
monuments
fossils

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Physics
The impurity atoms with which silicon should be doped to make p-type semiconductors are

Boron
Germanium
Antimony
Phosphorus

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Physics
A voltaic cell converts chemical energy to

Electrical energy
Mechanical energy
Light energy
Heat energy

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Physics
During the motion of a projectile fired from the earth surface, ________

Its kinetic energy remains constant
Vertical component of its velocity remains constant
Its momentum remains constant
Horizontal component of its velocity remains constant

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Physics
Which phase change is an example of an exothermic process?

Gas to Solid
All listed here
Liquid to Solid
Gas to Liquid

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Physics
Minimum number of unequal vectors which can give zero resultant are

four
three
two
more than four

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