Question

SECTION - A
(i) Kala-azar (ii) Malaria
1. Name the causative organisms for:
1
would be acceleration of a body if its velocity-time graph is a line parallel to the time axis?
3. Mention the effect of surface area, temperature, wind speed and humidity on the rate of evaporation
of a liquid.
4. Name the following -
(a) Tissue that forms the inner lining of our mouth
(b) Tissue that connects muscle to bone in humans.
(C)Tissue that stores fat in our body.
(d) Tissue in plants that provides them flexibility.
5. (a) State Newton's third law of motion.
(b) Explain why is it difficult for a fireman to hold a hose, which ejects large amount of water at a
high velocity.
OR
2
A child sets a 5 rupee coin on a stiff playing card covering an empty glass tumbler. He gives the card
a sharp horizontal flick with his finger. The card shoots away. What happens to the coin and why?
6. Calculate the number of molecules of sulphur present in 16g of solid sulphur.
w
Differentiate between prokaryotic and eukaryotic cells on the basis of size and
cell organelles. Give one example of each
w
w
8. What happens to the force of gravitation between two objects, if
(a) The mass of one object is doubled?
(b) The distance between the objects is doubled?
​

Answer 1

Answer:

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(i) Kala-azar (ii) Malaria

1. Name the causative organisms for:

1

would be acceleration of a body if its velocity-time graph is a line parallel to the time axis?

3. Mention the effect of surface area, temperature, wind speed and humidity on the rate of evaporation

of a liquid.

4. Name the following -

(a) Tissue that forms the inner lining of our mouth

(b) Tissue that connects muscle to bone in humans.

(C)Tissue that stores fat in our body.

(d) Tissue in plants that provides them flexibility.

5. (a) State Newton's third law of motion.

(b) Explain why is it difficult for a fireman to hold a hose, which ejects large amount of water at a

high velocity.

OR

2

A child sets a 5 rupee coin on a stiff playing card covering an empty glass tumbler. He gives the card

a sharp horizontal flick with his finger. The card shoots away. What happens to the coin and why?

6. Calculate the number of molecules of sulphur present in 16g of solid sulphur.

w

Differentiate between prokaryotic and eukaryotic cells on the basis of size and

cell organelles. Give one example of each

w

w

8. What happens to the force of gravitation between two objects