EASY
9th Telangana Board
IMPORTANT
Earn 100

Water can evaporate at any temperature. Explain with an example.

Important Questions on Heat

EASY
9th Telangana Board
IMPORTANT
Physical Science Class 9>Chapter 11 - Heat>Let us improve our learning>Q 4
What role does specific heat play in keeping a watermelon cool for a long time after removing it from a fridge on a hot day?
EASY
9th Telangana Board
IMPORTANT
Physical Science Class 9>Chapter 11 - Heat>Let us improve our learning>Q 5
Equal amounts of water are kept in a cup and in a dish. Which will evaporate faster? Why? 
MEDIUM
9th Telangana Board
IMPORTANT
Physical Science Class 9>Chapter 11 - Heat>Let us improve our learning>Q 6
Why specific heat is different for different substances? Explain.
MEDIUM
9th Telangana Board
IMPORTANT
Physical Science Class 9>Chapter 11 - Heat>Let us improve our learning>Q 7
If you are chilly outside the shower stall, why do you feel warm after the bath if you stay in the bathroom?
EASY
9th Telangana Board
IMPORTANT
Physical Science Class 9>Chapter 11 - Heat>Let us improve our learning>Q 1
Using the concept of evaporation explain why does a wet pant dry fast during hot summer days?
MEDIUM
9th Telangana Board
IMPORTANT
Physical Science Class 9>Chapter 11 - Heat>Let us improve our learning>Q 2
If 50 g of water at 20℃ temperature and 50 g of water 40℃ temperature are mixed, what is the final temperature of the mixture of?
EASY
9th Telangana Board
IMPORTANT
Physical Science Class 9>Chapter 11 - Heat>Let us improve our learning>Q 3
What do you observe in the surroundings in terms of cooling or heating when water vapour is getting condensed?
EASY
9th Telangana Board
IMPORTANT
Physical Science Class 9>Chapter 11 - Heat>Let us improve our learning>Q 4
Convert the following into Kelvin scale (i) 20℃ (ii) 21℃ (iii) -273℃.