universe & solar system section 12 MCQ Questions & Answers Detailed Explanation

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The following question based on Universe, solar system and Astronomy topic of indian geography mcq

Questions : Consider the following two statements. One labeled as the Assertion (A) and other as Reason (R). Examine these two statements carefully and select the correct answer by using the codes given below.
Assertion (A):
Existence of human life on Venus is highly improbable.
Reason (R):
Venus has extremely high level of carbon dioxide in its atmosphere.
Codes:

(a) A is true, but R is false.

(b) A is false, but R is true.

(c) Both A and R are true, but R is not the correct explanation of A.

(d) Both A and R are true and R is the correct explanation of A.

The correct answers to the above question in:

Answer: (d)

Existence of human life on Venus is highly improbable because Venus has extremely high level of carbon dioxide in its atmosphere.

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Read more universe solar system astronomy Based Indian Geography Questions and Answers

Question : 1

How many kilometres are represented by 1° of latitude?

a) 111 km

b) 91 km

c) 211 km

d) 321 km

Answer: (a)

111 Kms are represented by 1 degree latitude.

Question : 2

Which of these is a dwarf planet?

a) Eris

b) Hydra

c) Titan

d) Neptune

Answer: (a)

Eris is the most massive and second-largest dwarf planet known in the Solar System. It is 27% more massive than dwarf planet Pluto. Eris is the ninthmost-massive known body directly orbiting the Sun, and the largest known body in the Solar System not visited by a spacecraft.

Question : 3

What is the primary cause of the day and night ?

a) Inclination of the earth’s axis and its rotation

b) Inclination ofthe earth’s axis and itsrevolution

c) Earth’s daily motion

d) Earth’s annual motion

Answer: (c)

Question : 4

Consider the following statements:

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

a) 2 only

b) 3 only

c) 2 and 3

d) 1, 2 and 3

Answer: (c)

Question : 5

The nuclear fuel in the Sun is

a) Oxygen

b) Uranium

c) Hydrogen

d) Helium

Answer: (c)

The nuclear fuel in the sun is Hydrogen. Actually, the sun isn’t “burning,” but instead its heat and light come from its core where the element hydrogen is continuously being converted into the element helium.

This known as nuclear fusion and is basically the same thing a hydrogen bomb does.

Question : 6

Which of the following elements occurs the most abundantly in our universe?

a) Nitrogen

b) Helium

c) Oxygen

d) Hydrogen

Answer: (d)

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