Question

Ans me 9and 10 plz only these 2

Answer 1

Answer:

9

• yes, melting point can be used as a criterian for purity of a substance.
• If a substance possess the characteristics of purity then it is said to be pure and for the test, generally, melting point and boiling point is used to test.
• A pure substance has a fixed, definite and sharp(sudden, rapid, complete) melting point whereas impire has opposite to it..

10

• The fragrance of an incense stick lit at any corner of the room reaches to the other corner also immediately and to a every sides of the room.
• Mix dettol in water and dillute it to the extent you can. even after many to.es of dillution you can get the smell of Dettol dissolved in it.
• It is harder to break a crystal of sugar than to cut water in glass with your fingers.

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