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Physics

Physics
Ocean currents are an example of

Convection
Radiation
Insulation
Conduction

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Physics
What is the minimum distance (in metres) required to hear an echo?

21
17
10
13

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Physics
When two ice cubes are pressed together, they join to form one cube. Which one of the following helps to hold them together?

Hydrogen bond formation
Covalent attraction
Dipole interaction
Vander waals forces

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Physics
Natural radioactivity was discovered by

Enrico Fermi
Marie Curie
Henri Becquerel
Ernest Rutherfor

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Physics
The force that binds the neutrons and protons in a nucleus is called as:

Electromagnetic Force
Weak Nuclear Force
Strong Nuclear Force
Gravitational Force

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Physics
Metals are good conductors of electricity because:

The atoms are lightly packed.
They have high melting point.
They contain free electrons.
All of these

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