Rohan wants to find out which type of fabric best absorbs water. He soaks four different types of fabrics in water for $15$ minutes. He places each fabric on a sieve and allows the water to drain. He then measured the mass of the wet fabrics.

Fabric type	Mass of the wet fabric
Cotton	$120 \mathrm{g}$
Silk	$100 \mathrm{g}$
Polyester	$85 \mathrm{g}$
Wool	$110 \mathrm{g}$

What extra information does Rohan need to find out which fabric best absorbs water?

What are man-made fibres? Give two examples.     

Choose the correct word from the given brackets and fill in the blank:

[Silk, Wool, Cotton, Nylon]

_____ is a very expensive natural fibre.

Fill in the blank using the words given in the box.

Cotton and silk are examples of _____ fibres.

Fill in the blank with the most appropriate word.

Linen and _____ [jute/polyester] are examples of natural fibres.

Fill in the blank with the most suitable word.

Synthetic fibres are water _____. [proof/roof]

Match the following.