universe & solar system section 1 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 1

The approximate diameter of Earth is

a) 3400 km

b) 12800 km

c) 6400 km

d) 4200 km

Answer: (b)

The approximately diameter of Earth is 12800 km. The rotation of the planet has slightly flattened it out, so it has a larger diameter at the equator than at the poles.

The equatorial diameter of Earth is 12,756 km, its polar diameter is 12,713 km, and its average diameter, which is referred to in common usage, is 12,742 km or 7,926 miles.

Question : 2 [IAS (Pre) 2005]

Consider the following statements.

  1. The axis of the Earth’s magnetic field is inclined at 23 and half degree to the geographic axis of the Earth.
  2. The Earth’s magnetic pole in the Northern hemisphere is located on a peninsular in Northern Canada.
  3. Earth’s magnetic equator passes through Thumba in South India.
Which of the statements given above is/are correct?

a) Only 2

b) Only 3

c) 2 and 3

d) 1, 2 and 3

Answer: (b)

Question : 3

The chronometer is used for

a) Keeping correct time

b) Measuring earthquakes

c) Measuring rock-density

d) Measuring distance

Answer: (a)

Question : 4 [UPPCS (Mains) 2016]

Which of the following pairs of planets is without satellites?

a) Earth and Jupiter

b) Mercury and Venus

c) Mercury and Mars

d) Venus and Mars

Answer: (b)

Question : 5 [NDA 2012-I]

The distance between two consecutive longitudes (91°E and 92° E) at the Poles is

a) 25 km

b) 111 km

c) 18 km

d) 0 km

Answer: (d)

The distance between two consecutive longitudes at the poles is 0 KM. A degree of longitude is widest at the equator at 69.172 miles (111.321) and gradually shrinks to zero at the poles.

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