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