1. Which gas in the atmosphere protects us from harmful ultraviolet radiations?   Ozone   Carbon Dioxide   Oxygen   Nitrogen   Hint Half-n-half Clue   2. What is the name given to molten rocks erupted by a volcano?   Geyser   Firestone   Lava   Crater   Half-n-half Clue   3. Where is the Sea of Tranquility?   In the Pacific Ocean   Near the Bermuda Triangle   On the Moon   In the Atlantic Ocean   Half-n-half Clue   4. What is known as the universal solvent?   Hydrochloric Acid   Sulphuric Acid   Water   Aqua Regia   Half-n-half Clue   5. The Sun is a   Huge Planet   Star   Satellite   Comet   Half-n-half Clue   6. Which of the following is necessary for burning (combustion)?   Oxygen   Petrol   Carbon   Nitrogen   Half-n-half Clue   7. Who wrote the book "The Origin of Species"?   Louis Pasteur   Sir Alexander Fleming   Stephen Hawking   Charles Darwin   Half-n-half Clue