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