Question

Answer the 3,4,5 questions!!​

Answer 1

Answer:

4) suger water oxygen

5)a that is 25 degrees.....

Explanation:

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Answer 2

Que-3)

(a) Naphthalene undergoes sublimation easily i.e., the change of state of naphthalene from solid to gas without the intervention of the liquid state. Thus, naphthalene balls keep on forming naphthalene vapours which disappear into the air with time without leaving any solid.....

(b) When perfume is released it quickly changes into vapour. The kinetic energy of gas molecules is high & the rate of diffusion is high. Hence we can smell the perfume sitting several metres away........

Que-4)

Ans ) The forces of attraction are the strongest in solids, followed by liquids and the weakest in gases. Oxygen is a gas, water is a liquid and sugar is a crystalline solid. So the increasing order of forces of attraction is Oxygen < Water < Sugar.......

Que-5)

Ans) Physical states of water in -:

1. Liquid
2. Solid
3. Liquid ......

Hope it helps you.....