UNIT TEST (190702)

CLASS 9

1.  A force of 1000 Newton is applied on a 25 kg mass for 5 seconds.
What would be its velocity?
2. A force of 200 N is applied on a body and its velocity changes from 5m/s to 10m/s in a second.     What is the mass of the body?
3. What is SONAR? How it is work?
4.  A stone is thrown vertically upwards with a speed of 20 m/s. How high will it go before it begins to fall? (Take g = 9.8m/s2 )
5.  Calculate the number of mole in 90 g of H2O and also calculate the number of particles contains by it?


CLASS 8
1. Name the five petroleum substance?
2. Explain the process of formation of petroleum.
3. A second hand Tv is for Rs 2500. And then Rs 500 was spent on its repair and sold for Rs 3300. Find profit/loss percent.
4.  Vanshika got 150 out of 200 and Sakshi got 120 marks out of 180. Whose performance is better? 5. The perimeter of a rectangular swimming pool is 154m. Its length is 2m more than twice its breadth. What are the length and the breadth of the pool?

CLASS 7
1. How coal and petrol is formed?
2.  Write about digestive system?
3.  Define symbiotic relationship?
4. What about insectivorous plant?
5. Find the sum of all integer between -6 to 8.

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