Class 8 General Science Notes: - Unit-12- Our Universe ( Solved Exercise MCQs)

Unit-12- Our Universe ( Solved Exercise MCQs)

(National Book Foundation - New Book/New Syllabus Based on National Curriculum Pakistan 2023-2024 and Onwards)

(Class 8 General Science Notes for 8th Centralized Exam 2023-2024 and onward, FDE, Islamabad)

A. MCQs (Choose the Correct Answers).

1. The distances in space are measured in

a. metres.
b. miles.
c. light years.
d. kilometres.

... Answer is c. light years.
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2. Milky Way galaxy is classified as

a. spiral galaxy.
b. elliptical galaxy.
c. irregular galaxy.
d. spherical galaxy

... Answer is a. spiral galaxy.
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3. With no or very little star formation, galaxy is called

a. spiral.
b. elliptical.
c. irregular.
d. spherical

... Answer is b.  elliptical.
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4. When the mass of star is equal to our sun it will turn into

a. white dwarf.
b. neutron star.
c. black-hole.
d. singularity.

... Answer is a.  white dwarf.
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5. During star formation the stars are prevented to collapse under gravity by

a. black holes.
b. other stars.
c. mass of gases.
d. nuclear reactions.

... Answer is d.  nuclear reactions.
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6. A pulsar is a type of

a. white dwarf.
b. neutron star.
c. black hole.
d. red giant.

... Answer is b.  neutron star.
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7. To form a black hole, the initial mass of the star in solar masses should be

a. 0.5
b. 1
c. 3
d. 7

... Answer is c.  3
solar mass

8. The total life of sun (from birth to its death) is

a. 100 million years.
b. 4.6 billion years.
c. 5 billion years.
d. 10 billion years.

... Answer is d.  0 billion years.
4.6 billion years + 5 billion years

9. Optical telescopes make use of

a. X-rays.
b. infrared light.
c. visible light.
d. radio waves.

... Answer is c.  visible light.
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10. The unmanned object launched into space to study celestial objects is

a. steatite.
b. star.
c. space probe.
d. space telescope.

... Answer is c.  space probe.
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3. Website for Single National Curriculum Pakistan - All Subjects Notes 

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