Choose the best correct option in the following as :- |
Q1. The used tea learns are separated from prepared tea by the method of: |
a. Centrifugation b. Filtration c. Evaporation d. Sublimation |
Q2. Separating funnel technique is used to separate components which are - |
a.Miscible liquids b. Immiscible liquids c. Solid and liquid d. Solid and gas |
Q3. Centrifugation technique is used to separate: |
a. Cream from milk b. Ammonium chloride and salt c. Alcohol & water d. iron filling and sulphur |
Q4. Which one is a correct method of separating is on filings from sulphur powder. |
a. Heating with water b. passing the mixture over a magnet c. heating in a china dish d. using a separating funnel. |
Q5. The process of cooling a hot and concentrate solution of a substance to obtain crystals of the solute called |
a.Evaporation b. Sublimation c. Crystallization d. Chromatography |
Q6. Identify the method used to separate more than two components of a mixture whose difference in being point is <25°C. |
a.Distillation b. Fractional distillation c. Crystallization d. Centrifugation. |
Q7. A simple distillation technique used for the mixture if. |
a. Two liquid miscible b. They boil without decomposition c. They have sufficient difference in their boiling points. d. All the above. |
Q8. For water purification system in water work, the following steps are carried out. |
1.Loading 2. Sedimentation. 3. Chlorination 4.Filtration : the correct sequence of steps is |
a.2,1,4,3 b. 2,3,4,1 c. 2,1,3,4 d. 4,1,2,3 |
Q9. A mixture containing sand, Sodium chloride, Ammonium chloride and iron filing may be separated by using following steps. The correct sequence of steps would be. |
1.By using magnet 2. Filtration 3. Evaporation 4. Sublimation |
Q10. The process of crystallization used to. |
a. Purify a large number of water soluble salts. b. Purification of salt that we get from sea water. |
c. Separate crystals B alum (phitkari) from inpure sample. d. All the above. |
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CCE :IX Chapter: Is matter around us pure : MCQ’S |
CCE :IX Chapter: Is matter around us pure : MCQ’S |
CCE :IX Chapter: Is matter around us pure : MCQ’S |
Fill in the blanks: IX: Is matter around us pure |
Test yourself: IX :Is matter around us pure :MCQ’S |
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