1. Which of the following has an organic origin?   Sand   Coal   Bakelite   Nylon   Hint Half-n-half Clue   2. Who wrote the book "The Origin of Species"?   Charles Darwin   Sir Alexander Fleming   Stephen Hawking   Louis Pasteur   Half-n-half Clue   3. What is the total number of bones in the human body?   32   196   206   512   Half-n-half Clue   4. Where is the Sea of Tranquility?   In the Atlantic Ocean   In the Pacific Ocean   Near the Bermuda Triangle   On the Moon   Half-n-half Clue   5. How many planets are there in our solar system?   8   9   10   12   Half-n-half Clue   6. The Earth is surrounded by an insulating blanket of gases which protects it from the light and heat of the Sun. This insulating layer is called the   Biosphere   Lithosphere   Atmosphere   Hydrosphere   Half-n-half Clue   7. Which of the following is necessary for burning (combustion)?   Nitrogen   Petrol   Carbon   Oxygen   Half-n-half Clue   FREE PREVIEW: Last 12 Questions not a part of the free preview. Get Premium Membership to view all questions.