13. Petroleum is found in the river basins of_____ and _____.
14. Give full form : a) CNG b) LPG
15. ______ and _____ are the National Parks to preserve tigers located in Uttarkhand and
Rajasthan.
16. Give 2 example for non contact forces.
17. Why is it difficult to walk on wet marble floor?
18. The outer part of the eye is composed of three layers. What are they?
19. _________ is an astronomer who observed that our universe is expanding.
20. What is eutrophication?
Answers
Answer:
Today, petroleum is found in vast underground reservoirs where ancient seas were located.
2.Answer: LPG – Liquefied Petroleum Gas. CNG-Compressed Natural Gas.
3.Jim Corbett National Park is the oldest national park in India and was established in 1936 as Hailey National Park to protect the endangered Bengal tiger. It is located in Nainital district and Pauri Garhwal district of Uttarakhand and was named after hunter and naturalist Jim Corbett.4.Iron pins attracted in the presence of a magnet bar without any physical contact. Falling of raindrops on earth is also an example of non-contact force. The charging of the hair and attraction of paper bits towards it. Two magnets are placed close to each other is also a non-contact force example.