Question

2) Which of the following is a compound?

(a) Air (b) Sodium chloride (c) Emulsion (d) Alloy

3) Who coined the word cell?

(a) Robert hooke (b) Robert brown (c) Watson and crick (d) Flaming

4) Which of the following is not included in white blood corpuscles?

(a) Neutrophil (b) Lymphocyte (c) Monocyte (d) Platelet

5) To which phyllum does jellyfish belong?

(a) Mollusca (b) Annelida (c) Coelenterate (d) Echinodermate

6) What is constant for an object performing uniform circular motion?

(a) Acceleration (b) Velocity (c) Displacement (d) Speed

7) On which principle of conservation does a rocket work?

(a) Mass (b) Energy (c) Momentum (d) velocity

8) What would be the weight of an object on the moon whose weight on the earth is

30 N?

(a) 5N (b) 6N (c) 30N (d) 180N

9) What is the chemical formula of ozone ?

(a) Co (b) O3 (c) O2 (d) O4

10) Due to difference in what is the movement of air caused?

(a) Temperature (b) rain (c) moisture (d) wind​

Answer 1

Answer:

1) Alloy

2)Robert Hooke

3) platelet

4)Phylum Cnidaria

5) speed

6)Momentum

7)30N

8)O3

9) Movement of air caused by temperature or pressure differences is wind. Where there are differences of pressure between two places, a pressure gradient exists, across which air moves: from the high pressure region to the low pressure region.

Answer 2

1. D
2. A
3. D
4. your all options are wrong the riguy option is CNIDARIA
5. D
6. C
7. D
8. B
9. A