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The Universe

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Which of the following planets rotates from east to west?

  1. Mercury

  2. Earth

  3. Jupiter

  4. Uranus


Correct Option: D
Explanation:

Uranus and Venus are the only planets of the solar system that rotate from east to west.

Which planet is called the 'Dwarf Planet'?

  1. Saturn

  2. Neptune

  3. Pluto

  4. Uranus


Correct Option: C
Explanation:

Pluto is called the 'Dwarf Planet'.

If the mass of Earth is M, what is the mass of Jupiter?

  1. 318 M

  2. 1000 M

  3. 1300 M

  4. 1400 M


Correct Option: A
Explanation:

Mass of Jupiter is about 318 times that of Earth.

Which of the following statements is/are true?

(a) Venus is the brightest planet in the solar system. (b) Venus is also called the 'Sister Planet' of Earth. (c) Venus has two moons.

  1. Only (a)

  2. Both (b) and (c)

  3. Only (c)

  4. Both (a) and (b)


Correct Option: D
Explanation:

Venus is the brightest planet in the solar system. Venus is also called the 'Sister Planet' of Earth.

A comet has

  1. one dust tail only

  2. one gas tail only

  3. one gas and one dust tail only

  4. two gas tails and one dust tail only


Correct Option: C
Explanation:

A comet has one gas and one dust tail only.

Which of the following is one of the moons of the planet Neptune?

  1. Triton

  2. Titan

  3. Ceres

  4. Phobos


Correct Option: A
Explanation:

Triton is one of the moons of the planet Neptune.

Which of the following planets has the most tilted axis?

  1. Earth

  2. Venus

  3. Uranus

  4. Saturn


Correct Option: C
Explanation:

Uranus is the planet having the most tilted axis.

The immediate neighbouring planets of Earth are

  1. Mercury and Venus

  2. Venus and Mars

  3. Mars and Jupiter

  4. Mercury and Saturn


Correct Option: B
Explanation:

The immediate neighbouring planets of Earth are Venus and Mars.

Which of the following celestial bodies is/are also known as shooting stars?

  1. Asteroids

  2. Meteors

  3. Triton

  4. All of the above


Correct Option: B
Explanation:

Meteors are also known as shooting stars.

What is the approximate diameter of the largest known asteroid?

  1. 750 km

  2. 850 km

  3. 950 km

  4. 1050 km


Correct Option: C
Explanation:

Asteroids range in size from tiny pebbles to about 950 kilometers in diameter (Ceres). Sixteen of the 3,000 known asteroids are over 150 miles (240 km) in diameter.

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