Water vapour turns into clouds in the atmosphere when: A. It rains B. The temperature rise C. Dew point is reached (Answer) D. Evaporation takes place

Water vapour turns into clouds in the atmosphere when:

A. It rains

B. The temperature rise

C. Dew point is reached (Answer)

D. Evaporation takes place
by

1 Answer

Answer :

C. Dew point is reached (Answer)
by

Related questions

When dew point la reached it is said that at that temperature (a) the atmosphere is said to be saturated with water vapour (b) the relative humidity of the atmosphere is 100% (c) the atmosphere can hold no more water vapour (d) All the above

Description : When dew point la reached it is said that at that temperature (a) the atmosphere is said to be saturated with water vapour (b) the relative humidity of the atmosphere is 100% (c) the atmosphere can hold no more water vapour (d) All the above

Last Answer : Ans: (a)

Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is called the __________ temperature. (A) Dry-bulb (B) Wet-bulb (C) Dew point (D) Adiabatic saturation

Description : Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is called the __________ temperature. (A) Dry-bulb (B) Wet-bulb (C) Dew point (D) Adiabatic saturation

Last Answer : (B) Wet-bulb

When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the (A) Partial pressure of water vapour is less than the total pressure (B) Humidity is < 100% & dew point temperature of air has not reached (C) Dew point temperature of air has not reached & air is not saturated fully (D) Air is fully saturated

Description : When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the (A) Partial pressure of water vapour is less than the total pressure (B) Humidity is < 100% & dew ... Dew point temperature of air has not reached & air is not saturated fully (D) Air is fully saturated

Last Answer : (D) Air is fully saturated

Dew point of a gas-vapour mixture (A) Increases with temperature rise (B) Decreases with temperature rise (C) Decreases with decrease in pressure (D) Increases with increase in pressure

Description : Dew point of a gas-vapour mixture (A) Increases with temperature rise (B) Decreases with temperature rise (C) Decreases with decrease in pressure (D) Increases with increase in pressure

Last Answer : (C) Decreases with decrease in pressure

Less dew is formed on cloudy nights because (a) Clouds absorb the falling dew (b) Clouds scatter moisture (c) In cloudy nights the radiation takes place very slowly (d) In cloudy nights the radiation takes place very quickly

Description : Less dew is formed on cloudy nights because (a) Clouds absorb the falling dew (b) Clouds scatter moisture (c) In cloudy nights the radiation takes place very slowly (d) In cloudy nights the radiation takes place very quickly

Last Answer : Ans:(d)

Pick up the correct statement from the following: (A) Rivers, lakes, oceans and springs get water from the rains (B) Rain water is obtained by evaporation from rivers, lakes and oceans (C) Water remains in atmosphere as vapours(D) All the above

Description : Pick up the correct statement from the following: (A) Rivers, lakes, oceans and springs get water from the rains (B) Rain water is obtained by evaporation from rivers, lakes and oceans (C) Water remains in atmosphere as vapours (D) All the above

Last Answer : Answer: Option D

The dew point is the: a. Dry bulb temperature on a psychrometer b. Temperature at which water vapour will start to be absorbed into the air c. Temperature below which water vapour will start to condense out of the air d. Pressure below which water vapour will start to condense out of the air e. Temperature at which water will start to evaporate

Description : The dew point is the: a. Dry bulb temperature on a psychrometer b. Temperature at which water vapour will start to be absorbed into the air c. Temperature below which water vapour will start to ... vapour will start to condense out of the air e. Temperature at which water will start to evaporate

Last Answer : Answer: C

Water vapour beyond the dew point result in-----? A. Precipitation B. Hailstorm C. Condensation (Answer) D. Formation of ice

Description : Water vapour beyond the dew point result in-----? A. Precipitation B. Hailstorm C. Condensation (Answer) D. Formation of ice

Last Answer : C. Condensation (Answer)

The temperature at which the air cannot hold all the water vapour mixed in it and some vapour starts condensing is called as A. humidification temperature B. dehumidification temperature C. dew point temperature D. none of the above

Description : The temperature at which the air cannot hold all the water vapour mixed in it and some vapour starts condensing is called as A. humidification temperature B. dehumidification temperature C. dew point temperature D. none of the above

Last Answer : ANSWER : C

What is the temperature at which the water vapour in the mixture of water vapour in air, starts condensing called? A. condensation temperature B. dew point temperature C. vaporization temperature D. all of the above

Description : What is the temperature at which the water vapour in the mixture of water vapour in air, starts condensing called? A. condensation temperature B. dew point temperature C. vaporization temperature D. all of the above

Last Answer : ANSWER : B

An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively. The humidity of air sample expressed as kg of water vapour/kg of dry air is: (A) 0.048 (B) 0.079 (C) 0.122 (D) 0.152

Description : An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively ... air is: (A) 0.048 (B) 0.079 (C) 0.122 (D) 0.152

Last Answer : (D) 0.152

An indication of sensible heat content in air-water vapour mixture is a) wet bulb temperature b) dew point temperature c) density of air d) dry bulb temperature

Description : An indication of sensible heat content in air-water vapour mixture is a) wet bulb temperature b) dew point temperature c) density of air d) dry bulb temperature

Last Answer : d) dry bulb temperature

The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the __________ temperature. (A) Dew point (B) Wet bulb (C) Dry bulb (D) None of these

Description : The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the __________ temperature. (A) Dew point (B) Wet bulb (C) Dry bulb (D) None of these

Last Answer : (D) None of these

Monsoon is caused by----------? A. Seasonal reversal of winds (Answer) B. Revolution of earth C. Movement of clouds D. Rise in temperature E. Rain forests

Description : Monsoon is caused by----------? A. Seasonal reversal of winds (Answer) B. Revolution of earth C. Movement of clouds D. Rise in temperature E. Rain forests

Last Answer : A. Seasonal reversal of winds (Answer)

What is Water vapour beyond the dew point? -Do You Know?

Description : What is Water vapour beyond the dew point? -Do You Know?

Last Answer : answer:

Water vapour beyond the dew point result in A. Precipitation B. Hailstorm C. Condensation D. Formation of ice

Description : Water vapour beyond the dew point result in A. Precipitation B. Hailstorm C. Condensation D. Formation of ice

Last Answer : ANSWER: C

What is Water vapour beyond the dew point?

Description : What is Water vapour beyond the dew point?

Last Answer : Condensation

Consider the diurnal (daily) cycle of temperature at the surface. Why is the tem- perature maximum in the mid-to-late afternoon? (a) There is a net energy gain at the surface from dawn to mid- afternoon. (b) Clouds form in mid-to-late afternoon, cutting down the solar heating and cooling the surface. (c) The intensity of solar radiation is at a maximum at this time. (d) Late in the day, evaporation from the surface increases and this cools the surface.

Description : Consider the diurnal (daily) cycle of temperature at the surface. Why is the tem- perature maximum in the mid-to-late afternoon? (a) There is a net energy gain at the surface from dawn to mid- ... this time. (d) Late in the day, evaporation from the surface increases and this cools the surface.

Last Answer : There is a net energy gain at the surface from dawn to mid- afternoon.

A mixture of 10% C6H6 vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around __________ °C. (A) 21.7 (B) 20 (C) 27.3 (D) 18.7

Description : A mixture of 10% C6H6 vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around __________ °C. (A) 21.7 (B) 20 (C) 27.3 (D) 18.7

Last Answer : (D) 18.7

Reducing suction pressure in refrigeration cycle (a) lowers evaporation temperature (b) increases power required per ton of refrigeration (c) lowers compressor capacity because vapour is lighter (d) all of the above.

Description : Reducing suction pressure in refrigeration cycle (a) lowers evaporation temperature (b) increases power required per ton of refrigeration (c) lowers compressor capacity because vapour is lighter (d) all of the above.

Last Answer : Ans: d

For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphereis high, then (a) bigger cabinet should be used (b) smaller cabinet should be used (c) perfectly tight vapour seal should be used (d) refrigerant with lower evaporation temperature should be used

Description : For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphereis high, then (a) bigger cabinet should be used (b) smaller cabinet should ... tight vapour seal should be used (d) refrigerant with lower evaporation temperature should be used

Last Answer : Ans: c

Vacuum is generally maintained in the vapour space of an evaporator mainly to (A) Get economical temperature difference by using moderate pressure steam (B) Facilitate forward feeding in multiple effect evaporation (C) Concentrate heat sensitive materials (D) Achieve very high concentration of the final product

Description : Vacuum is generally maintained in the vapour space of an evaporator mainly to (A) Get economical temperature difference by using moderate pressure steam (B) Facilitate forward ... (C) Concentrate heat sensitive materials (D) Achieve very high concentration of the final product

Last Answer : (A) Get economical temperature difference by using moderate pressure steam

The burnout heat flux in the nucleate boiling regime is not a function of the (A) Liquid density (B) Vapour density (C) Temperature difference (D) Heat of evaporation

Description : The burnout heat flux in the nucleate boiling regime is not a function of the (A) Liquid density (B) Vapour density (C) Temperature difference (D) Heat of evaporation

Last Answer : (B) Vapour density

You have discovered a new celestial body. It has a thick atmosphere and it produces powerful cosmic winds and, when observed, the clouds obscure the body. You have determined it is this type of star. A. Wolf-Rayet star (Answer) B. Red supergiant C. Stellar storm D. Pulsar

Description : You have discovered a new celestial body. It has a thick atmosphere and it produces powerful cosmic winds and, when observed, the clouds obscure the body. You have determined it is this type of star. A. Wolf-Rayet star (Answer) B. Red supergiant C. Stellar storm D. Pulsar

Last Answer : A. Wolf-Rayet star (Answer)

Pick out the wrong statement (A) The concentric atmosphere layer just above troposphere is called stratosphere, which is rich in ozone (B) Mesosphere is characterised by very low atmospheric pressure and low temperature (C) Troposphere is a dusty zone containing water vapor and clouds (D) The radio waves used in the long distance radio communication are reflected back to earth by stratosphere

Description : Pick out the wrong statement (A) The concentric atmosphere layer just above troposphere is called stratosphere, which is rich in ozone (B) Mesosphere is characterised by very low atmospheric ... radio waves used in the long distance radio communication are reflected back to earth by stratosphere

Last Answer : (D) The radio waves used in the long distance radio communication are reflected back to earth by stratosphere

Pick out the wrong statement. (A) The concentric layer in atmosphere which contains about 70% of the total mass of atmosphere and characterised by a steady decrease in temperature is called stratosphere (B) Stratosphere is rich in ozone and is located just above the troposphere (C) Troposphere is a turbulent dusty zone containing much of water vapor and clouds (D) The earth's atmosphere is an envelope of gases extending upto a height of about 200 kms

Description : Pick out the wrong statement. (A) The concentric layer in atmosphere which contains about 70% of the total mass of atmosphere and characterised by a steady decrease in temperature is called stratosphere (B) ... ) The earth's atmosphere is an envelope of gases extending upto a height of about 200 kms

Last Answer : (A) The concentric layer in atmosphere which contains about 70% of the total mass of atmosphere and characterised by a steady decrease in temperature is called stratosphere

When water vapour condenseit form tiny drops of water that forms clouds when do this droplets come down as rain?

Description : When water vapour condenseit form tiny drops of water that forms clouds when do this droplets come down as rain?

Last Answer : Individual droplets are so small, that they can stay suspendedin the air. If the droplets combine into larger drops that are tooheavy to stay suspended, they fall as raindrops.

Pick out the wrong statement. (A) The value of hydrostatic head increases with increase in vacuum in the effect in a multiple effect evaporator system (B) Entering velocity of the liquid in the tubes of natural circulation evaporators is in the range of 0.3 to 0.9 metre/second (C) Duhring's plot is used for calculating the concentration of solution (D) In a multiple effect evaporation system, the number of effects is limited by the total boiling point rise

Description : Pick out the wrong statement. (A) The value of hydrostatic head increases with increase in vacuum in the effect in a multiple effect evaporator system (B) Entering velocity of the liquid in ... a multiple effect evaporation system, the number of effects is limited by the total boiling point rise

Last Answer : (C) Duhring's plot is used for calculating the concentration of solution

Clouds float in the atmosphere because of their – (1) low pressure (2) low density (3) low viscosity (4) low temperature

Description : Clouds float in the atmosphere because of their – (1) low pressure (2) low density (3) low viscosity (4) low temperature

Last Answer : (2) low density Explanation: The key to why clouds float is that the density of the same volume of cloud material is less than the density of the same amount of dry air. Just as oil floats on water ... it is less dense, clouds float on air because the moist air in clouds is less dense than dry air.

The clouds float in the atmosphere because of their low: (1) temperature (2) velocity (3) pressure (4) density

Description : The clouds float in the atmosphere because of their low: (1) temperature (2) velocity (3) pressure (4) density

Last Answer : (4) density Explanation: Clouds generally form, survive and grow in air that is moving upward. Rising air expands as the pressure on it decreases, and that expansion into thinner, high-altitude air causes cooling.

Clouds float in the atmosphere because of their (1) low pressure (2) low density (3) low viscosity (4) low temperature

Description : Clouds float in the atmosphere because of their (1) low pressure (2) low density (3) low viscosity (4) low temperature

Last Answer : low density

When a gas turns into a liquid the process is called: A. Condensation B. Evaporation C. Deposition D. Sublimation

Description : When a gas turns into a liquid the process is called: A. Condensation B. Evaporation C. Deposition D. Sublimation

Last Answer : ANSWER: A

When a gas turns into a liquid the process is called: A. Condensation B. Evaporation C. Deposition D. Sublimation

Description : When a gas turns into a liquid the process is called: A. Condensation B. Evaporation C. Deposition D. Sublimation

Last Answer : ANSWER: A

When a gas turns into a liquid the process is called: A. Condensation B. Evaporation C. Deposition D. Sublimation

Description : When a gas turns into a liquid the process is called: A. Condensation B. Evaporation C. Deposition D. Sublimation

Last Answer : ANSWER: A

When a gas turns into a liquid the process is called: A. Condensation B. Evaporation C. Deposition D. Sublimation

Description : When a gas turns into a liquid the process is called: A. Condensation B. Evaporation C. Deposition D. Sublimation

Last Answer : ANSWER: A

What is the scientific principle behind why ice cream turns gritty ? Once it has reached this stage, other than throwing it out, what can be done with it ?

Description : What is the scientific principle behind why ice cream turns gritty ? Once it has reached this stage, other than throwing it out, what can be done with it ?

Last Answer : I would say that it grows bigger Ice Crystals.

Oxide of sulphur present in the atmosphere are washed down by rains to cause – (1) Depletion of fossil fuel reserves (2) Eutrophication in lakes (3) Lowering of pH of soil (4) Industrial smog formation

Description : Oxide of sulphur present in the atmosphere are washed down by rains to cause – (1) Depletion of fossil fuel reserves (2) Eutrophication in lakes (3) Lowering of pH of soil (4) Industrial smog formation

Last Answer : (1) Depletion of fossil fuel reserves Explanation: The oxide of Sulphur (Sulphur Dioxide) is washed down on earth as acid rain.

Oxide of sulphur present in the atmosphere are washed down by rains to cause : (1) Depletion of fossil fuel reserves (2) Eutrophication in lakes (3) Lowering of pH of soil (4) Industrial smog formation

Description : Oxide of sulphur present in the atmosphere are washed down by rains to cause : (1) Depletion of fossil fuel reserves (2) Eutrophication in lakes (3) Lowering of pH of soil (4) Industrial smog formation

Last Answer : Depletion of fossil fuel reserves

The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy-diagram represents (a) condensation of the refrigerant vapour (b) evaporation of the refrigerant liquid (c) compression of the refrigerant vapour (d) metering of the refrigerant liquid

Description : The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy-diagram represents (a) condensation of the refrigerant vapour (b) evaporation of the refrigerant liquid (c) compression of the refrigerant vapour (d) metering of the refrigerant liquid

Last Answer : Ans: b

The quantity of water vapour that the atmosphere can hold (a) is independent of temperature (b) increases with increase of temperature (c) decreases with increase of temperature (d) fluctuates with increase of temperature

Description : The quantity of water vapour that the atmosphere can hold (a) is independent of temperature (b) increases with increase of temperature (c) decreases with increase of temperature (d) fluctuates with increase of temperature

Last Answer : Ans:(b)

The increasing amount of CO2 in the atmosphere is slowly raising its temperature because it absorbs (a) the infrared part of the solar radiation (b) the ultraviolet part of the solar radiation (c) all the solar radiations (d) the water vapour of the air

Description : The increasing amount of CO2 in the atmosphere is slowly raising its temperature because it absorbs (a) the infrared part of the solar radiation (b) the ultraviolet part of the solar radiation (c) all the solar radiations (d) the water vapour of the air

Last Answer : Ans:(a)

The capacity of the atmosphere to hold water vapour (a) Increases as the temperature increases (b) Decreases as the temperature increases (c) Increases as the temperature decreases (d) Decreases as the temperature decreases

Description : The capacity of the atmosphere to hold water vapour (a) Increases as the temperature increases (b) Decreases as the temperature increases (c) Increases as the temperature decreases (d) Decreases as the temperature decreases

Last Answer : Ans: (a)

The evolution of heat of solution takes place in ammonia absorption plant when (a) ammonia vapour goes into solution (b) ammonia vapour is driven out of solution (c) lithium bromide mixes with ammonia (d) weak solution mixes with strong solution

Description : The evolution of heat of solution takes place in ammonia absorption plant when (a) ammonia vapour goes into solution (b) ammonia vapour is driven out of solution (c) lithium bromide mixes with ammonia (d) weak solution mixes with strong solution

Last Answer : Ans: a

Mercury is dangerous when it turns into vapour form because of, A. It is accumulative and causes liver poison B. It is accumulative and causes kidney poison C. It induces neoplasia in the liver D. It is accumulative and causes brain poison E. It induces neoplasia in the brain

Description : Mercury is dangerous when it turns into vapour form because of, A. It is accumulative and causes liver poison B. It is accumulative and causes kidney poison C. It induces neoplasia in the liver D. It is accumulative and causes brain poison E. It induces neoplasia in the brain

Last Answer : D. It is accumulative and causes brain poison

A world-famous magician and his young assistant were observed walking slowly along in a department store when suddenly they both stopped walking and began to slowly rise from the floor. The two continued to rise majestically until they had reached a height of 20 feet. Numerous store customers and a security guard witnessed the event, but no one seemed shocked by what they had seen, and no report of the occurrence ever reached the news media. The secrets of magic are not supposed to be revealed, but how would you speculate the magician and his assistant accomplished this feat, and why didn’t the onlookers express amazement? -Riddles

Description : A world-famous magician and his young assistant were observed walking slowly along in a department store when suddenly they both stopped walking and began to slowly rise from the floor. The two ... and his assistant accomplished this feat, and why didn't the onlookers express amazement? -Riddles

Last Answer : The magician and his assistant were simply using an escalator to go up to the next floor in the department store.

Relative humidity is the ratio of actual vapour pressure to the saturation vapour pressure (A) At the same temperature (B) At the same pressure (C) In the same volume (D) In the atmosphere

Description : Relative humidity is the ratio of actual vapour pressure to the saturation vapour pressure (A) At the same temperature (B) At the same pressure (C) In the same volume (D) In the atmosphere

Last Answer : Answer: Option A

__________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas￾vapor mixture. (A) Dry bulb (B) Wet bulb (C) Dew point (D) None of these

Description : __________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas￾vapor mixture. (A) Dry bulb (B) Wet bulb (C) Dew point (D) None of these

Last Answer : (B) Wet bulb

Why Earth is called the blue planet? (1) Because of two-thirds surface covered by water (2) Because of water laden clouds in the atmosphere (3) Because of pollution in the atmosphere (4) None of these

Description : Why Earth is called the blue planet? (1) Because of two-thirds surface covered by water (2) Because of water laden clouds in the atmosphere (3) Because of pollution in the atmosphere (4) None of these

Last Answer : (1) Because of two-thirds surface covered by water Explanation: Earth is called the blue planet because two-thirds of its surface is covered by water.

When vaporisation takes place directly at the heating surface, it is called (A) Film boiling (B) Nucleate boiling (C) Vapour binding (D) None of these

Description : When vaporisation takes place directly at the heating surface, it is called (A) Film boiling (B) Nucleate boiling (C) Vapour binding (D) None of these

Last Answer : (B) Nucleate boiling

The phenomenon occuring during pumping of a liquid solution containing dissolved gases, which may come out of the solution giving rise to gas pockets, is termed as (A) Evaporation (B) Cavitation (C) Sublimation (D) Stripping

Description : The phenomenon occuring during pumping of a liquid solution containing dissolved gases, which may come out of the solution giving rise to gas pockets, is termed as (A) Evaporation (B) Cavitation (C) Sublimation (D) Stripping

Last Answer : (B) Cavitation