We provide matter in our surroundings practice exercises, instructions, and a learning material that allows learners to study outside of the classroom. We focus on matter in our surroundings skills mastery so, below you will get all questions that are also asking in the competition exam beside that classroom.
List of matter in our surroundings Questions
| Question No | Questions | Class |
|---|---|---|
| 1 | 17. With the increase in temperature of liquid its rate of evaporation (a) Increases (b) Decreases (c) Remains constant (d) Can not be predicted | 9 |
| 2 | Родописолис 9. When a solution of common salt in water is distilled, the salt is found in (a) Distilling flask (b) Receiver (c) Cooling water (d) Condenser | 9 |
| 3 | (d) Camphor When water vapours condense to form water, the particles of water vapour (a) gain energy and also gain freedom of motion. (b) gain kinetic energy and increase their freedom to move about without any significant attraction. (c) lose energy and come closer, thus their freedom of movement gets restricted. (d) lose energy and also lose freedom to move about | 9 |
| 4 | 5. The property of diffusion is shown to the maximum extent (a) solid (c) gas (b) liquid (d) Same in all cases | 9 |
| 5 | 12. The phenomenon of change of liquid into gas at any temperature below its boiling point is called (a) melting (b) boiling (c) liquifaction (d) evaporation | 9 |
| 6 | 12. Select the mixture that can be easily separated using separating funnel. (a) Milk and water (b) Sugar and water (c) Oil and water (d) Petrol and kerosene | 9 |
| 7 | 8. Sumit placed a solid on table and after 20 minutes he found that volume of solid is reduced and there is no liquid on table as well. (a) It represents phenomena of sublimation (b) This phenomena occurs by evolution of heat (c) Solid substance placed by sumit on table should be sublimate (d) It represents the phenomena of Boiling | 9 |
| 8 | 1. Assertion : Cooking of rice is difficult at higher altitudes. Reason: At higher altitudes the boiling point of water increases. | 9 |
| 9 | 8. Which one is suitable method for separation of a mixture of water and sodium chloride? (a) Decantation (b) Evaporation (c) Simple distillation (d) Fractional distillation | 9 |
| 10 | unu 18. On which of the following rate of evaporation of Liquid depends? (a) Surface (b) Temperature (c) Nature of Liquid (d) All of these | 9 |
| 11 | 4. Why cover of tea kettle flew away? (a) Not properly tight (b) Tea is explosive in nature (c) Pressure of steam (d) None of these | 9 |
| 12 | 3. The substance C may be (a) Wax (c) Liquid soap (b) CO2 gas (d) Hair oil | 9 |
| 13 | When a solid is allowed to melt, it results in (a) moving away of particles (b) coming closer of particles (©) decrease in speed of particles (d) decrease in temperature. | 9 |
| 14 | With the increase in pressure the boiling point of a liquid (a) increase (b) decreases (c) remains unchanged (d) can not be predicted | 9 |
| 15 | 5. Water Water droplets on cover of tea container represents. (a) Condensation (b) Evaporation (c) Fusion (d) Sublimation | 9 |
| 16 | 2. Which are/is correct statements? (a) Matter is continuous in nature. (b) Of the three state of matter, the one that is most compact is solid state. (c) In solid state interparticles space (i.e., empty space) is minimum. (d) The density of solid is generally more than that of a liquid. | 9 |
| 17 | 1. Column ‘A’ Column ‘B’ A. Sublimate (p) Iodine B. Compressibility (q) Liquids C. Definite Volume (r) Solid D. Expansion on Heating (s) gases | 9 |
| 18 | UuuuUOVOUUUUUUUU What is correct on the basis of phenomena of Evaporation? (a) It cause cooling effect. (b) It is favoured by decrease of temperature (c) Evaporation is a surface phenomena (d) Evaporation rate increases with increase of the temperature | 9 |
| 19 | 10. Which one will be most suitable method to separate a mixture of sodium chloride and ammonium chloride? (a) Fractional distillation (b) Sublimation. (c) Sedimentation (d) Chromatography | 9 |
| 20 | 13. Evaporation is a (a) bulk phenomenon (b) surface phenomenon (c) Both (a) and (b) (d) None of these is correct | 9 |
| 21 | 11 gasus tilall lyurus. 3. Assertion : During evaporation of liquid there is no change in the temperature of the liquid. Reason: Kinetic energy associated with particles of matter increases with increase of temperature. | 9 |
| 22 | 13. When a mixture of sand, common salt, glass powder and iodine is heated, a sublimate is formed. The sublimate formed is (a) Sodium chloride (b) Glass (C) Iodine (d) Common salt ΗΔΗ 4ο | 9 |
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