General Science/Everyday Science MCQs
Topic Notes: General Science/Everyday Science
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
31
What is the Kuiper Belt?
Answer:
Region of icy bodies beyond Neptune
The Kuiper Belt is a donut-shaped region of icy objects beyond the orbit of Neptune. It contains several dwarf planets, including Pluto, and many small icy bodies.
32
What are small rocky bodies mostly found in the asteroid belt called?
Answer:
Asteroids
Asteroids are rocky, airless remnants left over from the formation of our solar system. Most are found in the main asteroid belt between Mars and Jupiter.
33
Halley's Comet returns to the inner Solar System roughly every
Answer:
76 years
Halley's Comet is a periodic comet with an orbital period ranging from 74 to 79 years. It is visible to the naked eye from Earth and is the most famous short-period comet.
34
What is the smallest planet in the Solar System?
Answer:
Mercury
Since Pluto's reclassification, Mercury is the smallest planet in the Solar System. It is a rocky world slightly larger than Earth's Moon and lacks a substantial atmosphere.
35
The largest moon in the Solar System is
Answer:
Ganymede
Ganymede, one of Jupiter's Galilean moons, is the largest moon in the Solar System. It is larger than the planet Mercury and is the only moon known to have its own magnetic field.
36
Which two planets have no moons?
Answer:
Mercury and Venus
Mercury and Venus are the only two planets in our Solar System that do not have any natural satellites. All other planets have at least one moon.
37
Which planet has the longest day?
Answer:
Venus
Venus has a very slow rotation; one day on Venus lasts about 243 Earth days, which is longer than its orbital year of 225 Earth days. It also rotates in a retrograde direction.
38
The 'Great Red Spot' is found on
Answer:
Jupiter
The Great Red Spot is a persistent high-pressure storm in the atmosphere of Jupiter. It is an anticyclonic storm larger than Earth and has been observed for over 150 years.
39
Which planet rotates on its side?
Answer:
Uranus
Uranus is unique because its axis of rotation is tilted at about 98 degrees. This means it essentially rolls around the Sun on its side, leading to extreme seasonal variations.
40
Which planet is known for its bright stunning rings?
Answer:
Saturn
While all four outer planets have rings, Saturn's system is the most extensive and visible. The rings are made of billions of pieces of ice and rock, ranging from dust grains to large boulders.