Question

5. What is the physical state of water at-
(a) 25°C
(b) 0°C
(c) 100°C ?
6. Give two reasons to justify-
(a) water at room temperature is a liquid.
(b) an iron almirah is a solid at room temperature.​

Answer 1

Answer:

liquid

solid

gaseous

Explanation:

Answer 2

Answer:

(5)

a.liquid state

Water at 25°C is present in the liquid state.

b.solid state

At 0°C, water exists in solid-state.

c.gaseous state

At 100°C, water exists in a gaseous state

a.

Liquid has the following characteristics: At room temperature, water has no shape but has a fixed volume i.e., it occupies the shape of the container in which it is kept. At room temperature, water flows easily.

b.

1) as almirah is a solid, so it has a definite shape and volume. so it is solid at room temperature. 2) the melting point of iron is very high (1538°) while the room temperature is 28°. as melting point of iron is very high as compared to room temperature, it is solid at room temperature.

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