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