Science & Tech Quiz – 1By Mainak Roy / August 19, 2025 Science & Tech Quiz - 1 1 / 20 1. What is the SI unit used to measure electric voltage? Ampere Watt Volt Ohm 2 / 20 2. What is the chemical name of ‘Neela Thotha’? Sodium Carbonate Copper Sulphate Zinc Chloride Ferrous Sulphate 3 / 20 3. What is the rate of change in the velocity of an object per unit time called? Speed Acceleration Force Momentum 4 / 20 4. What is the molecular formula of baking soda? NaOH Na₂CO₃ CaCO₃ NaHCO₃ 5 / 20 5. Which disease is transmitted by a virus carried by Aedes mosquitoes? Typhoid Tuberculosis Malaria Dengue 6 / 20 6. Compounds of which metal are used in black and white photography? Zinc Copper Iron Silver 7 / 20 7. What is the name of the alkali commonly found in window cleaners? Potassium nitrate Ammonium hydroxide Calcium carbonate Sodium chloride 8 / 20 8. Which instrument is used to measure the vibrations caused by an earthquake? Anemometer Barometer Seismograph Thermometer 9 / 20 9. The fibrous peel of a coconut is made up of which type of tissue? Parenchyma Sclerenchyma Collenchyma Xylem 10 / 20 10. What color does a base change red litmus paper to? Blue Red Yellow Green 11 / 20 11. Which hormone is produced by the pineal gland? Thyroxine Melatonin Insulin Adrenaline 12 / 20 12. How many types of pathways are formed in plants as freely organized conducting tubes? 4 1 3 2 13 / 20 13. The Vienna Convention is associated with which subject or area? Nuclear Disarmament Ozone Layer Protection Human Rights Climate Change 14 / 20 14. Which of the following do aquatic animals require to breathe underwater? Hydrogen Carbon dioxide Oxygen dissolved in water Nitrogen 15 / 20 15. In a terrestrial ecosystem, green plants absorb approximately what percentage of the sunlight energy that falls on their leaves? 3% 2% 4% 1% 16 / 20 16. Who is responsible for decomposing waste into smaller particles? Decomposers Consumers Scavengers Producers 17 / 20 17. What is the approximate atomic mass of hydrogen? 4 1 3 2 18 / 20 18. Which of the following is considered a mobile source of food? Plants Algae Animals Fungi 19 / 20 19. Which of the following cell organelles is referred to as the ‘suicide bag’ of the cell? Ribosome Golgi apparatus Mitochondrion Lysosome 20 / 20 20. What is placed at the top of the Food Guide Pyramid? Grains Fruits Dairy products Fats, oils, and sweets Your score is By Wordpress Quiz plugin
