Question

give reasons for the following

a. naphthalene balls disappear with time without leaving any solid .

b. we can get the smell of perfume sitting several metres away .

c. what produces more several burns ,boiling water or Steam ​

Answer 1

Answer:

a) naphthalene balls disappear with time without leaving any solid .

ans: Because ,sublimation take place naphthalene balls get convert to gas .

b) we can get the smell of perfume sitting several metres away .

ans: Because ,the perfume was in gas state and the particles of gas are freely moveble .

c. what produces more several burns ,boiling water or Steam.

ans: Because , Iron needs high temperature to change its state temperature in just 25° .

( not sure about this answer c )

Thank you