MCQ Questions | Class 9 Science Chapter 10 | Gravitation with Answers

MCQ | Gravitation Class 9 | Part-2

Check the below NCERT MCQ Questions for Class 9 Science Chapter 10 Gravitation with Answers Pdf free download. MCQ Questions for Class 9 Science with Answers were prepared based on the latest exam pattern. We have Provided Gravitation Class 9 Science MCQs Questions with Answers to help students understand the concept very well.

Objective Question | NCERT Science Class 9

NCERT Solutions Class 9 Science
Book:	National Council of Educational Research and Training (NCERT)
Board:	Central Board of Secondary Education (CBSE)
Class:	9th
Subject:	Science
Chapter:	10 ( Part-2 )
Chapters Name:	Gravitation
Medium:	English

Ncert Solutions for Class 9 Science | Objective Type Questions

You can refer to NCERT Solutions for Class 9 Science Chapter 10 Gravitation to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Gravitation | Class 9 Science | NCERT Solutions

Q1.	The constant G
	A. is a very small quantity
	B. is a force
	C. is the same as g
	D. decrease with increasing altitude

Ans: is a very small quantity

Q2.	Magnitude of force in action and reaction is
	A.Always equal
	B.Always unequal
	C.May be equal or unequal.
	D.Depend on time of reaction.

Ans: Always equal

Q3.	If the mass of object is 20 kg then it’s weight on south pole will be…
	A.20 N
	B.200 N
	C.196 N
	D.980 N

Ans: 200 N

Q4.	The ratio of acceleration due to gravity on earth to the acceleration due to gravity on moon is
	A.1/10
	B.10/1
	C.1/6
	D.6/1

Ans: 6/1

Q5.	The mass of the object is 135 kg then its weight on earth will be
	A.135 N
	B.1323 N
	C.1224 N
	D.1413

Ans: 1323 N

Q6.	The mass of object is 88 kg then its weight on moon will be,
	A.862.4
	B.148.34
	C.132.33
	D.143.44

Ans: 143.44

Q7.	Which of the following does sink into water?
	A.Empty plastic bottle
	B.Wooden block
	C.Nail
	D.Rubber band

Ans: Nail

Q8.	Which of the following is based on Archimedes principle?
	A.Barometer
	B.Stethoscope
	C.Weighing machine
	D.None of these

Ans: None of these

Q9.	The SI unit of relative density is
	A.Kg/m
	B.Kg/m²
	C.Kg/m³
	D.Unit less quantity

Ans: unit less quantity

Q10.	The density of gold is
	A.Greater than density of water
	B.Less than density of water.
	C.Equal to density of water
	D.Equal to or less than density of water.

Ans: Greater than density of water

Q11.	Newton’s law of gravitation is based on
	A.Kepler’s first law
	B.Kepler’s second law
	C.Kepler’s third law
	D.Archimedes principle

Ans: Kepler’s second law

Q12.	The mass of the body on the moon is 40kg, what is the weight on the earth.
	A. 240kg
	B. 392N
	C. 240N
	D. 400kg

Ans: 392N

Q13.	The weight of an object is least at some region of the earth. What will be the colour of bears found in that region.
	A. black
	B. white
	C. blue
	D. brown

Ans: white

Q14.	Acceleration due to gravity varies with
	A. height
	B. depth
	C. shape of the planet
	D. all of these

Ans: all of these

Q15.	The relative density of a solid is 0.6. It floats in water with
	A. 40% of its volume inside water
	B. 60% of its volume inside water
	C. whole of its volume inside water
	D. any fraction of its volume inside water

Ans: 60% of its volume inside water

Q16.	The walls of a dam at the bottom are made thick because
	A. it looks attractive
	B. it is conventional
	C. it is convenient
	D. water exerts large pressure at the bottom

Ans: water exerts large pressure at the bottom

Q17.	Two particles are placed at some distance. If the mass of each of the two particles is doubled, keeping the distance between them unchanged, the value of gravitational force between them will be
	A. 1/4 times
	B. 4 times
	C. 1/2 times
	D. unchanged

Ans: 4 times

Q18.	An empty closed drum and a filled drum of same dimension will bring
	A. same upthrust
	B. same volume
	C. both (a) and (b)
	D. neither (a) nor (b)

Ans: both (a) and (b)

Q19.	What is buoyant force-
	A. An upward force on an object immersed in a liquid
	B. Partially downward force
	C. A down ward force on an object immersed in a liquid
	D. None of the above.

Ans: An upward force on an object immersed in a liquid

Q20.	A rectangular block of wood of dimensions 40cm x 20cm x 10cm is kept on a table top. The pressure is greatest when it is rested on
	A. equal for all cases
	B. 20cm x 10 cm
	C. 40cm x 10cm
	D. 40cm x 20cm

Ans: 20cm x 10 cm

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NCERT SOLUTIONS

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