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