Question

1.The ______is a mixture may be present in any ratio or proportion.

2. The process of pouring the clear supernatant liquid without disturbing the

sediment is called__________.

Group : B ( Tick the most appropriate answer)

(1 x 2=2)

3.Which of the following is a correct statement for a compound :

A compound has a definite composition / A compound does not have fixed

melting and boiling points.

4. By which of the following Method can common salt be obtained from

seawater :- Filtration/ evaporation

Group C : Write True or False. If false then correct the statement (1 x2=2)

5. sieving is a better method of separating Bran and wheat flour than winnowing

6. Common salt sublimation on heating whereas ammonium chloride does not

Group D ( Answer the following question )

(2x4=8)

7. What do you mean by refining?

8. State two characteristics of a pure substance

9. What do you mean by solvent and solution

10. Give two example of sublime substance other than camphor or iodine​

Answer 1

Answer:

Group C

9. ans - The substance that dissolves other substances is called solvent and The mixture obtained on dissolving a substance in another is known as a solution.

10. ans - The two examples of sublime substances are Ammonium chloride and naphthalene