Which condition out of the following will increase the evaporation of water?
(a) Increase in temperature of water
(b) Decrease in temperature of water
(c) Less exposed surface area of water
(d) Adding common salt to water
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which of the following sets of phenomena would increase on raising the temperature
Evaporation, diffusion, expansion of gas would increase on raising the temperature
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Which one of the following sets of phenomena would increase on raising the temperature?
(c) Evaporation, diffusion, expansion of gases
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Fill in the blanks: (a) Evaporation of a liquid at room temperature leads to a——— effect.
(a) cooling (b) stronger (c) liquid, gaseous (d) sublimation, liquid (e) evaporation
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Comment on the following statements: (a) Evaporation produces cooling. (b) Rate of evaporation of an aqueous solution
(a) Evaporation produces cooling as the particles at the surface of the liquid gain energy from the surroundings and change into vapour thereby producing a cooling effect. (b) Air around us...
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Why does resistance of a metallic conductor increase with increase in temperature?
When a metallic conductor is heated, the atoms in the metal vibrate with greater amplitude and frequency. Due to increase in temperature, the thermal velocities of free electrons also increases....
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Water cycle does not involve which of the following? (a) Evaporation (b) Condensation (c) Formation of clouds (d) Rainwater harvesting
(d) Rainwater harvesting
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State for each of the following whether it is due to evaporation or condensation:
(a) Water drops appear on the outer surface of a glass containing cold water. Condensation (b) Steam rising from wet clothes while they are ironed. Evaporation (c) Fog appearing on a cold...
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In which of the following case evaporation of water will be slowest?
(c) A glass of water kept in a room.
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Which among the following are physical or chemical changes? i. Evaporation of petrol
Physical changes: Evaporation of petrol, heating of an iron rod to red hot, sublimation of solid ammonium chloride. Chemical changes: Burning of Liquefied Petroleum Gas (LPG), curdling of milk.
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Which of the following type of ecosystem is expected in an area where evaporation exceeds precipitation, and mean annual rainfall is below 100mm
The correct answer is (c) Desert
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