📄 All MCQs
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What is the powerhouse of the cell?
💡 Explanation: Mitochondria generate most of the cell's supply of ATP, used as energy.
What gas do plants absorb from the atmosphere?
💡 Explanation: Plants absorb CO₂ and release oxygen through the process of photosynthesis.
Which planet is known as the Red Planet?
💡 Explanation: Mars is called the Red Planet because of the reddish appearance given by iron oxide on its surface.
What is the speed of light?
💡 Explanation: The speed of light in a vacuum is approximately 299,792 km/s.
What is the chemical symbol for water?
💡 Explanation: Water is composed of two hydrogen atoms and one oxygen atom — H₂O.
Which country has the most natural lakes?
💡 Explanation: Canada has more lakes than any other country, with about 60% of the world's lakes.
What is the smallest country in the world?
💡 Explanation: Vatican City, with an area of about 0.44 km², is the smallest country in the world.
How many continents are there on Earth?
💡 Explanation: There are 7 continents: Asia, Africa, North America, South America, Antarctica, Europe, and Australia.
Which is the largest ocean on Earth?
💡 Explanation: The Pacific Ocean is the largest, covering about 46% of the water surface.
What is the capital of France?
💡 Explanation: Paris is the capital and most populous city of France.