Science & Tech Quiz - 1 1 / 20 1. Which of the following cell organelles is referred to as the ‘suicide bag’ of the cell? Lysosome Ribosome Mitochondrion Golgi apparatus 2 / 20 2. In a terrestrial ecosystem, green plants absorb approximately what percentage of the sunlight energy that falls on their leaves? 2% 3% 1% 4% 3 / 20 3. What is the approximate atomic mass of hydrogen? 4 2 3 1 4 / 20 4. What is the name of the alkali commonly found in window cleaners? Calcium carbonate Ammonium hydroxide Potassium nitrate Sodium chloride 5 / 20 5. What is the molecular formula of baking soda? NaHCO₃ NaOH CaCO₃ Na₂CO₃ 6 / 20 6. The fibrous peel of a coconut is made up of which type of tissue? Collenchyma Sclerenchyma Parenchyma Xylem 7 / 20 7. Compounds of which metal are used in black and white photography? Silver Zinc Copper Iron 8 / 20 8. How many types of pathways are formed in plants as freely organized conducting tubes? 1 2 3 4 9 / 20 9. What is the rate of change in the velocity of an object per unit time called? Acceleration Speed Momentum Force 10 / 20 10. Which hormone is produced by the pineal gland? Melatonin Adrenaline Insulin Thyroxine 11 / 20 11. The Vienna Convention is associated with which subject or area? Climate Change Human Rights Ozone Layer Protection Nuclear Disarmament 12 / 20 12. Which disease is transmitted by a virus carried by Aedes mosquitoes? Tuberculosis Malaria Typhoid Dengue 13 / 20 13. What is placed at the top of the Food Guide Pyramid? Dairy products Grains Fruits Fats, oils, and sweets 14 / 20 14. Which of the following is considered a mobile source of food? Animals Fungi Plants Algae 15 / 20 15. Which instrument is used to measure the vibrations caused by an earthquake? Seismograph Barometer Anemometer Thermometer 16 / 20 16. What is the SI unit used to measure electric voltage? Ohm Ampere Volt Watt 17 / 20 17. What color does a base change red litmus paper to? Yellow Green Red Blue 18 / 20 18. Which of the following do aquatic animals require to breathe underwater? Hydrogen Carbon dioxide Nitrogen Oxygen dissolved in water 19 / 20 19. Who is responsible for decomposing waste into smaller particles? Consumers Decomposers Producers Scavengers 20 / 20 20. What is the chemical name of ‘Neela Thotha’? Copper Sulphate Ferrous Sulphate Zinc Chloride Sodium Carbonate Your score is By WordPress Quiz plugin
