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