1. The place or environment where a plant or animal naturally or normally lives and grows is known as______: Habitat
2. What time of the year the Earth is closest to the sun? In the winter
3. Which atmosphere layer contains ions and helps in wireless communication? Thermosphere
4. The energy which is unavailable in a system is called______: Entropy
5. Which is the hottest planet in our solar system? Venus
6. The blue colour of sky is due to______: Scattering of light rays
7. Excessive bleeding during an injury is the deficiency of_______: Vitamin K
8. Which of the following produces seeds but not fruits? Gymnosperms
9. The ozone layer is present in______: Stratosphere
10. Night blindness is caused due to the deficiency of______: Vitamin A
11. The weight of the object on the moon is ______ the weight of the object on earth: 1/6th
12. Disease that spreads from one person to another is called______: Communicable disease
13. Rotation of earth causes______: Day and night
14. Spanish influenza of 1918-19 was caused by which influenza virus? H1N1
15. What is the name of tropical cyclones in the China sea? Typhoon
16. A collection of system programs that controls and coordinates the overall operations of a computer system is called______: Operating system
17. A light sensitive device that converts drawing, printed text or other images into digital form is______: Scanner
18. Artificial noise is a______: Vibration
19. The example of cold-blooded animal is/are______: Insects
20. A covalent bond is between two atoms when they______: Share one or more electrons