Q:

Percentage of freshwater on earth surface

A) 3%	B) 4%
C) 0.3%	D) 69%

Answer & Explanation Answer: B) 4%

Explanation:

About 71% of the earth's surface is covered with water. In that 71% only 4% of water is a fresh water.

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Q:

For an ideal gas, which one of the following statements does not hold true?

A) The speed of all gas molecules is same	B) The kinetic energies of all gas molecules are not same
C) The potential energy of the gas molecules is zero	D) There is no interactive force between the molecules.

Answer & Explanation Answer: A) The speed of all gas molecules is same

Explanation:

In an ideal gas, at any particular time, different particles in the gas have different speeds and hence different kinetic energies. This assumption is reasonable because as the particles collide, we expect their speed to change. Even if initial speed of all the particles was same, the molecular collisions will disrupt this uniformity.Hence statement 1 is incorrect and 2 is correct.

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Q:

The strength of a force is usually expressed by its __________.

A) Motion	B) Direction
C) Interaction	D) Magnitude

Answer & Explanation Answer: D) Magnitude

Explanation:

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Q:

Magnesium (Mg) + Oxygen (O2) = ?

A) Mg2O	B) MgO4
C) O2Mg	D) MgO

Answer & Explanation Answer: D) MgO

Explanation:

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Q:

In the following question, out of the given four alternatives, select the one which best expresses the meaning of the given word

Empirical

A) Practical	B) Unproved
C) Hypothetical	D) Theoretical

Answer & Explanation Answer: A)

Practical

Explanation:

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Q:

Isotopes are atoms of the same element that have different

A) numbers of neutrons	B) numbers of electrons
C) numbers of protons	D) atomic numbers

Answer & Explanation Answer: A) numbers of neutrons

Explanation:

Isotopes are variations of an element that have the same charge as the original element, but a different mass, which is caused by either more/less neutrons in the nucleus.

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Q:

India held its 3rd environment forum with which nation?

A) Russia	B) Nepal
C) Singapore	D) Germany

Answer & Explanation Answer: D) Germany

Explanation:

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Q:

The 'Blue Water Policy' was introduced by the Portugese leader_________

A) Franscisco-de-Almeida	B) Alfonso de Albuquerque
C) Francis Caron	D) Francis Martin

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