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