1. The astronomical unit of light-year is used for______: Distance
2. The antibiotics is a very effective way of killing disease-causing bacteria, sometimes people don’t finish all of their pills. This can result in______: Bacteria becomes resistant to antibiotics
3. Proteins are made up of______: Polypeptide
4. The principle used in RADAR is same as that of sonar. In radar we use radio waves, in case of sonar we use______: Ultrasonic waves
5. How dengue fever is transmitted? Bite of an infected female Ades mosquito
6. The sky is blue because of______: Rayleigh scattering
7. Cyclones______: Are associated with low pressure systems
8. Rainbow formation is due to______: Refraction & reflection of sunlight by water droplets
9. Layer of atmosphere in which ozone layer lies is______: Stratosphere
10. Which distance is bigger-an astronomical unit (AU) or light year (LY)? Light year (LY)
11. Direction in which earth rotates is______: West to East
12. Collection of water droplets which are suspended in air called______: Cloud
13. How many calories you should eat to reduce weight? 1500
14. Time interval to complete one revolution of earth around its own axis is______: 23 hours & 56 minutes
15. Enzymes in human bodies are______: Proteins
16. Antibiotics are used to fight against______: Bacteria
17. Radio waves broadcasted been back by______: Ionosphere
18. During combustion of petrol in car engine, energy is converted in______: Mechanical
19. Barometer is used to measure______: Pressure
20. Ionic bond is between two atoms is______: Complete transfer of valence electron