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 |
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