1. How many planets are there in our solar system?   8   9   10   12   Hint Half-n-half Clue   2. The three states of matter are solid, liquid and gas.   True   False   3. What is the total number of bones in the human body?   32   196   206   512   Half-n-half Clue   4. Which of the following is necessary for burning (combustion)?   Carbon   Petrol   Oxygen   Nitrogen   Half-n-half Clue   5. Which gas evolves when charcoal is burnt?   Ozone   Oxygen   Nitrogen   Carbon Dioxide   Half-n-half Clue   6. The atom is made of   Positrons, Neutrons and Electrons   Protons and Quarks   Protons, Neutrons and Electrons   Neutrinos, Gamma Rays and Positrons   Half-n-half Clue   7. Enzymes and anti-bodies are mainly made of   Vitamins   Fats   Carbohydrates   Proteins   Half-n-half Clue