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