Question 1

Which one of the following reflects back more sunlight as compared to other three?

Accepted Answer

The land covered with fresh snow reflects the most sunlight compared to the other options given - a sand desert, paddy crop, and prairie land. This is because snow has the highest albedo among them.

Question 2

What is 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 statements given above is/are correct?

Accepted Answer

Asteroids and comets have distinct differences. Asteroids are small rocky celestial bodies, while comets are composed of frozen gases held together by rocky and metallic material. Asteroids are primarily located between the orbits of Jupiter and Mars, whereas comets are typically found between Venus and Mercury. One key distinguishing feature is that comets display a noticeable glowing tail, while asteroids do not. Therefore, the correct statements are 1 and 3 only, making the answer (b).

Question 3

Consider the following statements: Statement I: In the context of effect of water on rocks, chalk is known as a very permeable rock whereas clay is known as quite an impermeable or least permeable rock. Statement II: Chalk is porous and hence can absorb water. Statement III: Clay is not at all porous. Which one of the following is correct in respect of the above statements?

Accepted Answer

Chalk is a very permeable rock due to its porosity, allowing it to absorb water. On the other hand, clay is considered quite impermeable or least permeable, as it has very low porosity, making it difficult for water to pass through. This difference in porosity between chalk and clay explains why chalk is known for being permeable while clay is known for being impermeable.

Question 4

Consider the following statements: 1. In a seismograph, P waves are recorded earlier than S waves. 2. In P waves, the individual particles vibrate to and fro in the direction of wave propagation whereas in S waves, the particles vibrate up and down at right angles to the direction of wave propagation. Which of the statements given above is/are correct?

Accepted Answer

In a seismograph, P waves are recorded earlier than S waves because P waves are faster than S waves. P waves cause particles to vibrate in the direction of wave propagation, while S waves cause particles to vibrate perpendicular to the direction of wave propagation.

Question 5

The group of small pieces of rock revolving round the sun between the orbits of Mars and Jupiter are called:

Accepted Answer

Asteroids are a collection of small rocky fragments that orbit the sun between Mars and Jupiter. There are about 40,000 asteroids in this region.

Physical Geography - Lithosphere — UPSC Previous Year Questions

Which one of the following reflects back more sunlight as compared to other three?

Year-wise Distribution

Sample Questions

Physical Geography - Lithosphere — UPSC Previous Year Questions

Which one of the following reflects back more sunlight as compared to other three?

Year-wise Distribution

Sample Questions