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
(a) 111 km
(b) 91 km
(c) 211 km
(d) 321 km
The correct answers to the above question in:
Answer: (a)
111 Kms are represented by 1 degree latitude.
Discuss Form
Read more universe solar system astronomy Based Indian Geography Questions and Answers
Question : 1
Which of these is a dwarf planet?
a) Eris
b) Hydra
c) Titan
d) Neptune
Answer »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 : 2
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 »Answer: (c)
Question : 3
The principle of Black hole was enunciated by
a) S. Chandrashekhar
b) H. Khurana
c) H.J. Bhabha
d) C.V. Raman
Answer »Answer: (a)
The principle of Blackhole was enunciated by S. Chandrashekhar. A Black Hole is a region of space-time from which gravity prevents anything, including light, from escaping. The theory of general relativity predicts that a sufficiently compact mass will deform spacetime to form a black hole. Around a black hole, there is a mathematically defined surface called an event horizon that marks the point of no return.
The hole is called “black” because it absorbs all the light that hits the horizon, reflecting nothing, just like a perfect black body in thermodynamics.
Question : 4
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.
Answer »Answer: (d)
Existence of human life on Venus is highly improbable because Venus has extremely high level of carbon dioxide in its atmosphere.
Question : 5
Consider the following statements:
- The Axis of the earth’s magnetic field is inclined at 23 and half to the geographic axis of the earth.
- The earth’s magnetic pole in the Northern Hemisphere is located on a Peninsula in Northern Canada.
- The earth’s magnetic equator passes through Thumba in South India.
a) 2 only
b) 3 only
c) 2 and 3
d) 1, 2 and 3
Answer »Answer: (c)
Question : 6
The nuclear fuel in the Sun is
a) Oxygen
b) Uranium
c) Hydrogen
d) Helium
Answer »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.
GET Universe, solar system and Astronomy PRACTICE TEST EXERCISES
universe & solar system section 1
universe & solar system section 2
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universe & solar system section 4
universe & solar system section 5
universe & solar system section 6
universe & solar system section 7
universe & solar system section 8
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universe & solar system section 10
universe & solar system section 11
universe & solar system section 12
universe & solar system section 13
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