Class IX,Science

I. Multiple choice questions.    (5×1=5)

1) Which of the following is not a matter?

       A) Fog      B) humidity     C) melting point      D) blood

2) Which of the following pairs will not exhibit diffusion?

      A) salt, sugar  B) hydrogen, oxygen   C) sugar, water    D) oxygen ,water

3) What is the correct term for phase change from solid to directly gas?

      A) Sublimation    B) liquefaction     C) fusion    D) vaporization

4) Which of the following is a pure substance?

     A) Milk   B) seawater    C) soil     D) 24 carat gold

5) Which of the following is not a compound?

     A) Marble     B) washing soda    C) quick lime      D) brass

II. Define any five terms in the following    (5×2=10)

A) Boiling point

B) Evaporation

C) Compound

D) Solution

E) Saturated solution

F) Melting

G) Matter

III. Give reasons      (5×1=5)

A) We can easily move our hand in air but not through liquid or solid

B) Wood is called a solid

C) A mixture of iron and sulphur can be separated by using  Carbon disulphide.

D) Milk is not a pure substance

E) Water is a compound.  

IV. Activity (20)

V. CW/HW (10)