It is a hot summer day, Priyanshi and Ali are wearing cotton and nylon clothes respectively. Who do you think would be more comfortable and why?

A.VERIFIED ANSWERfact-checked by tutors

Hot summer leads to lot of sweating. Cotton absorbs lot of moisture whereas Nylon will not absorb the moisture as efficient as cotton. Hence cotton absorbs the sweat faster that Nylon does. Evaporation of moisture from the cotton cloth will give a cool feeling, especially when wind flows. Hence It can be concluded that Priyanshi will be more comfortable in summer days.

Suggested Q&A

SCIENCE · CLASS 9

ScienceCLASS 9
1. Why does the temperature of a substance remain constant during its melting point or boiling point?
ScienceCLASS 9
Comment on the following statements: (a) Evaporation produces cooling. (b) Rate of evaporation of an aqueous solution decreases with increase in humidity. Sponge though compressible is a solid.
ScienceCLASS 9
You want to wear your favourite shirt to a party, but the problem is that it is still wet after a wash. What steps would you take to dry it faster?
ScienceCLASS 9
Alka was making tea in a kettle. Suddenly she felt intense heat from the puff of steam gushing out of the spout of the kettle. She wondered whether the temperature of the steam was higher than that of the water boiling in the kettle. Comment
ScienceCLASS 9
Water as ice has a cooling effect, whereas water as steam may cause severe burns. Explain these observations.
ScienceCLASS 9
Classify the following into osmosis/diffusion Swelling up of a raisin on keeping in Spreading of virus on Earthworm dying on coming in contact with common Shrinking of grapes kept in thick sugar Preserving pickles in Spreading of smell of cake being baked throughout the Aquatic animals using oxygen dissolved in water during respiration