Question

Give two reasons to justify-

(a)Water at room temperature is a liquid.

(b)An iron almirah is a solid at room temperature.

9. A glass tumbler containing hot water is kept in the fr​

Answer 1

water is liquid on the room temperature because it is the characteristic of water that it is fluid and it will be liquid in the room temperature

Explanation:

an almirah is solid at room temperature because the intercellular space between Dam are not available they are closely packed and they have two characteristic that they are solid so they are solid at room temperature

Answer 2

Answer:

a) At room temperature (25°C), water is a liquid because it has the following characteristics of liquid: 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) An iron almirah is a solid at room temperature because its melting point as well as boiling point is above room temperature. Similarly, (i) An iron almirah is rigid and has a fixed shape. (ii) The density of metal is quite high. Hence, iron almirah is a solid at room temperature.

9. A glass tumbler containing hot water is kept in the freezer compartment of a refrigerator (temperature < 0∘ C). If you could measure the temperature of the content of the tumbler, which of the graphs as shown in figure would correctly represent the change in its temperature as a function of time