Sunday, August 12, 2012

IX MCQ Is Matter around us pure Practical based Guess Questions

9th  Chemistry : MULTIPLE CHOICE QUESTION ON PRACTICLE SKILLS-2
EXPERIMENT NO –2
1. Which one of the following is an example of heterogeneous mixture
a. NaCl + water                                               b. kerosene + water
c. sugar + water                                   d. alum + water
2. Which one of the following is a mixture of two elements
a. iron fillings + sulphur powder         b. sugar + common salt 
 c. water +milk                                                d. air
3. Which one is not the property of a mixture
a. heterogeneous                                 b. variable composition
 c . constant composition                    d. none of these
4.Correct method of separating iron fillings from sulphur powder
a. heating in china dish                       b. heating in boiling tube
c. heating in water                               d. moving magnet
5. In the formation of which one a large quantity of heat is involved
a. compound                                       b. colloid
c. true solution                                                d. each one     
6. When a magnet is moved through of iron fillings and sulphur powder , then
a. iron fillings will cling to magnet     b. black mass is produced
c. sulphur will cling to magnet            d. none of these
7.When a mixture of iron fillings is heated with sulphur powder
a. nothing happens                              b. black mass is formed
c. yellow mass is formed                     d. white mass is formed
8. which one is a mixture
a. salad of fruits                                  b. air
c. sea water                                         d. all of the above
9. Name the process of conversion of solid to vapor
a. evaporation                                      b. fusion
c. distillation                                       d. sublimation
10.Which one of the following is a pure substance
a.milk                                                  b.cold drink
c .carbon d oxide                                d. brass
11.What is observed when iron fillings and sulphur powder is heated in a china dish
a. sulphur melts                                   b. iron melts
c. mixture evaporates                          d.. yellow mass is formed
12. Mixture is always –
a. homogenous                                                b. heterogeneous
c. homogenous or heterogeneous        d. none of these
13. Compound is always –
a. homogenous                                                b. heterogeneous
c. homogenous or heterogeneous        d. none of these
14..Which of the following is a compound
a. blood                                               b. air
c. soil                                                   d. water
15.On heating iron and sulphur in a china dish
a. mixture is formed                            b. compound is formed
c. both are formed                               d. no change
MULTIPLE CHOICE QUESTION ON PRACTICLE SKILLS EXPERIMENT NO --1

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