(a) Draw a diagram of the longitudinal section of a flower and label on it sepal, petal, ovary and stigma.

(b)write the names of male and female reproductive parts of a flower.

Nalin and his four friends were sitting on his roof on a pleasant day. All of them were enjoying Ludo. Suddenly ayush saw seven colours in the sky. He jumped with joy and shouted “Look, there is an indradhanush in the sky”. Then nalin explained all about the rainbow. After that every one clapped for him.

(a) What information is given by Nalin to this friends about a rainbow?

(b) Is it possible to obtain rainbow phenomenon on the earth?

(c) Which term is used for the seven colors of the rainbow?

(d) Which color appears at the top and at the bottom of the rainbow?

(e) Which moral value is shown by Nalin towards his friends?

(a) what is a soap? Why are soaps not suitable for washing clothes when the water is hard?

(b) Explain action of soap in removing an oily spot from a piece of cloth.

(a) If the image formed by a lens is diminished in size and erect, for all positions of the object, what type of lens is it?

(b) Name the point on the lens through which a ray of light passes undeviated.

(c) An object is placed perpendicular to the principal axis of a convex lens of focal length 20 cm. The distance of the object from the lens is 30 cm. Find (i) the position (ii) the magnification and (iii) the nature of the image formed.

(a) In a tabular form, differentiate between ethanol and ethanoic acid under the following heads:

(i) Physical state (ii) Taste (iii) NaHCO3 test (iv)Ester test

(b) Write a chemical reaction to show the dehydration of ethanol.