Question

ᴩʟᴇᴀꜱᴇ ᴛᴀᴋᴇ yᴏᴜ'ʀᴇ ᴛɪᴍᴇ ᴀɴᴅ ꜱᴏʟᴠᴇ ᴀꜱ ᴍᴜᴄʜ ᴀꜱ yᴏᴜ ᴄᴀɴ ʙᴏᴛʜ ɪᴍᴀɢᴇꜱ ᴀɴᴅ ᴛᴇxᴛᴇꜱ ꜱᴀᴍᴇ.

THREE MARK QUESTIONS

13 5 ml of water was taken in a test tube and china dish separately. These samples were

then kept under different conditions as below (a) Both the samples are kept under the fan.

(b) Both the samples are kept in a cupboard. State in which case evaporation will be

faster? Give a reason to support your answer.

A glass tumbler containing hot water (60 0C) is kept in the freezer compartment of a refrigerator

14 (-5C0

) Draw a graph between the temperature and time showing the process of

conversion of hot water to ice.

15 (a)A rubber band can change its shape on stretching. Will you classify it as solid or not?

Justify your answer.

(b)Arrange the three states of matter in the increasing order of (i) rate of diffusion (ii)

Intermolecular force of attraction. (iii) particle motion​​

Answer 1

Explanation:

(a) Evaporation will be faster under a fan. Since fan helps in the fast movement of the air, water will get more opportunity to evaporate under a fan than inside a cup board. In this case, the outside air will not come in contact with water.

(b) On a rainy day, there is humidity in air. As a result, evaporation of water will slow down. please list me as a brainlist

Answer 2

Justify your answer.

(b)Arrange the three states of matter in the increasing order of (i) rate of diffusion (ii)

Intermolecular force of attraction. (iii) particle motion

Nadia

Nadia class 9

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