Everyday Science MCQs (page 3 of 51)
Physics, chemistry, biology, the human body, units and the solar system, covering the everyday science section of general-ability tests.
1,014 questions. Select an option to check your answer, or open "Show answer". Showing 41–60.
- 41.
Which planet is closest to the Sun?
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Answer: C. Mercury
Mercury is the closest planet to the Sun.
- 42.
Which planet is farthest from the Sun?
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Answer: D. Neptune
Neptune is the farthest planet from the Sun.
- 43.
Which planet is known as the Red Planet?
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Answer: C. Mars
Mars is called the Red Planet due to its reddish appearance.
- 44.
Which planet is known as the Blue Planet?
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Answer: C. Earth
Earth is known as the Blue Planet.
- 45.
Which planet has the most moons?
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Answer: B. Saturn
Saturn has the most confirmed moons of any planet, well ahead of Jupiter.
- 46.
Which planet is the largest?
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Answer: A. Jupiter
Jupiter is the largest planet in the Solar System.
- 47.
Which planet is the smallest?
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Answer: B. Mercury
Mercury is the smallest planet.
- 48.
What is the name of our galaxy?
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Answer: C. Milky Way
Our galaxy is the Milky Way.
- 49.
What is the closest star to Earth?
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Answer: A. Sun
The Sun is the closest star to Earth.
- 50.
What is the hottest planet?
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Answer: D. Venus
Venus has the highest surface temperature due to its thick atmosphere.
- 51.
What is the chemical symbol of gold?
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Answer: D. Au
Au comes from the Latin word aurum.
- 52.
What is the chemical symbol of silver?
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Answer: B. Ag
Ag comes from the Latin word argentum.
- 53.
What is the chemical symbol of lead?
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Answer: C. Pb
Pb comes from the Latin word plumbum.
- 54.
Which is the hardest natural substance?
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Answer: A. Diamond
Diamond is rated 10, the highest value, on the Mohs scale of hardness.
- 55.
Which gas makes up most of the Earth's atmosphere?
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Answer: B. Nitrogen
Nitrogen makes up about 78% of the air and oxygen about 21%.
- 56.
Which part of the cell is known as its powerhouse?
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Answer: A. Mitochondria
Mitochondria produce most of the cell's energy in the form of ATP.
- 57.
Which vitamin does the skin produce when exposed to sunlight?
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Answer: A. Vitamin D
Ultraviolet-B light helps the skin make vitamin D.
- 58.
Scurvy is caused by a deficiency of:
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Answer: B. Vitamin C
Scurvy causes bleeding gums and slow wound healing. Citrus fruits prevent it.
- 59.
Rickets in children is caused by a deficiency of:
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Answer: B. Vitamin D
Vitamin D is needed to absorb calcium for strong bones.
- 60.
Night blindness is caused by a deficiency of:
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Answer: C. Vitamin A
Vitamin A is needed for the light-sensitive cells of the retina.