What is the difference between asteroids and comets?

  1. Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material.
  2. Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury.
  3. Comets show a perceptible glowing tail, while asteroids do not.

Which of the statement(s) given above is/are correct?

[UPSC Civil Services Exam – 2011 Prelims]

(a) 1 and 2 only

(b) 1 and 3 only

(c) 3 only

(d) 1, 2 and 3


Answer: (b)

Explanation:

Category Asteroids Comets
Definition Small, rocky objects that orbit the Sun Frozen leftovers from the formation of the solar system composed of dust, rock, and ices
Size Much smaller than planets Vary in size; can be larger than some planets
Location Mainly found in the asteroid belt between Mars and Jupiter Primarily originate from two regions: the Kuiper Belt and the Oort Cloud
Total Mass Less than that of Earth’s Moon Not specified
Appearance Do not show a perceptible glowing tail Have a giant glowing head/tail when closer to the sun
Quantity Not specified Likely billions orbiting our Sun

Therefore, option (b) is the correct answer.

Consider the following statements:                                                                   The Parliament of India can place a particular law in the Ninth Schedule of the Constitution of India. The validity of a law placed in the Ninth Schedule cannot be examined by any court and no judgement can be made on it. Which of the statements given above is/are correct?

Consider the following statements:                                               

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Consider the following statements:                                                         The Parliament of India can place a particular law in the Ninth Schedule of the Constitution of India. The validity of a law placed in the Ninth Schedule cannot be examined by any court and no judgement can be made on it. Which of the statements given above is/are correct?

Consider the following statements:                                               

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