Questions and answers for exam Preparation

MCQs

Total Questions : 10

Consider the following statements :
Assertion (A) : Areas near the equator receive rainfall throughout the year.
Reason (R) : High temperatures and high humidity cause Convectional rain in most afternoons near the equator.
In the context of the above two statements, which one of the following is correct?

Both A and R are true and R is the correct explanation of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
A is false but R is true

Discuss Question

Answer: Option A. -> Both A and R are true and R is the correct explanation of A
:
A

Ans. (a)

Explanation

These areas near equator are called Tropical Rain Forest regions. Here generally the type of rainfall is convectional rainfall, because of constant high temperature and high humidity produces rainfall almost daily in the afternoon throughout the year.

Question 2.

Which one of the following layers of the atmosphere is responsible for the deflection of radio waves?

Troposphere
Stratosphere
Mesosphere
Ionosphere

Discuss Question

Answer: Option D. -> Ionosphere
:
D

Ans. (d)

Explanation

In the lower part of the Thermosphere region between 100 to 400 km, ionisation of atmospheric gases takes place. This layer is called Ionosphere. There is a peak concentration of ionized particles at 250 km, that is why this layer deflects radio waves.

Question 3.

What is the age of the solar system?

5000 million years
15 billion years
5 million years
None of these

Discuss Question

Answer: Option A. -> 5000 million years
:
A

Ans. (a)

Question 4.

The clouds floods in the atmosphere because of their low

Temperature
velocity
pressure
density

Discuss Question

Answer: Option D. -> density
:
D

Ans. (d)

Explanation

As the clouds are less denser than the air below.

Question 5.

A part of meteor which lands on earth due to earth's gravitational pull is called-

Asteroid
moon
Comet
meteorites

Discuss Question

Answer: Option D. -> meteorites
:
D

Ans. (d)

Question 6.

Comet shoemaker-Levy 9 hit the planet

Pluto
Mars
Jupiter
Saturn

Discuss Question

Answer: Option C. -> Jupiter
:
C

Ans. (c)

Explanation

Comet Shoemaker-Levy 9 hit the planet Jupiter. It was discovered by Keroshil Shoemaker and David Levy on 24th March 1994.

Question 7.

A meteor is

a rapidly moving star
a piece of matter which has entered the earth's atmosphere from outer space
part of a constellation
a comet without tail

Discuss Question

Answer: Option B. -> a piece of matter which has entered the earth's atmosphere from outer space
:
B

Ans. (b)

Explanation : Meteors are the pieces of matter which have entered the earth's atmosphere from outer space by the gravitational force of the earth, when they pass close to the earth. Once these objects enter into the thick atmosphere of the earth, due to the friction they burn before reaching the earth.