Science MCQs

Practice multiple choice questions with instant feedback. Select an option to see if you're correct.

Total Questions
2100
Page 9 of 210
Question 81 Easy

A telescope is an instrument that gathers _______ from distant sources.

A
Sound
B
Light
C
Heat
D
Water
Question 82 Easy

A group of stars in the sky that, when viewed from Earth, create an outline of some recognizable shape or pattern is called ___?

A
Constellation
B
Nebula
C
Asterism
D
Galaxy
Question 83 Medium

A region of space where matter has collapsed in on itself is called a?

A
White Dwarf
B
Wormhole
C
Black Hole
D
Neutron Star
Question 84 Medium

Nebulae are made up of ________?

A
Oxygen \(97%\\)and Nitrogen \(3%\)
B
Hydrogen \(97%\\)and Helium \(3%\)
C
Carbon \(50%\\)and Nitrogen \(50%\)
D
Helium \(97%\\)and Hydrogen \(3%\)
Question 85 Medium

Light reaches us from the Sun is about 8 minutes and from Sirius in about _____?

A
8 minutes
B
8 days
C
8 months
D
8 years
Question 86 Hard

How many years our solar system takes to one orbit around Milky Way galaxy?

A
250
B
225
C
300
D
275
Question 87 Hard

How many light years the earth and sun are away from the center of Milky Way galaxy?

A
27000
B
23000
C
20000
D
25000
Question 88 Easy

The earth is part of a galaxy called?

A
Andromeda Galaxy
B
Triangulum Galaxy
C
Milky Way Galaxy
D
Pinwheel Galaxy
Question 89 Medium

What causes the stars in space to absorb and scatter starlight that resulting in a reduction in their brightness?

A
Planets and Moons
B
Asteroids and Comets
C
Black Holes and Neutron Stars
D
Dust and Gas
Question 90 Medium

Which one of the following stars are hotter than red and orange stars?

A
Green
B
Dark
C
Blue
D
Yellow
Showing 81-90 of 2100 questions

Quick Stats

Total Questions 10900
easy 5797
medium 2983
hard 2120

Practice Tips

Time Management

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Review Mistakes

Always check explanations for wrong answers

Track Progress

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Did You Know?

Practice Makes Perfect

Regular practice with MCQs can improve your test-taking speed and accuracy by up to 40%.

Active Recall

MCQs engage active recall, which is 50% more effective for long-term memory than passive reading.