What happens when water vapour strikes a cold surface?

What happens when water vapour strikes a cold surface?
by

1 Answer

Answer :

The water vapour is cooled and condenses back into a liquid.
by
selected by

Related questions

What happens when lightning strikes the ocean?

Description : What happens when lightning strikes the ocean?

Last Answer : the electricity will spread through the water and weaken as it spreads. It can be deadly if you are in the immediate area. It doesn’t necessarily travel farther because its in water. Fresh waters impurities & the compounds in salt water act as conductors.

What is lightning what happens when it strikes?

Description : What is lightning what happens when it strikes?

Last Answer : Lightning is the flow of electrons attempting to equalize staticcharges - usually between clouds or between a cloud and ground.What happens when it strikes depends totally on the path it takes.Anything that gets in its way is likely to be damaged.

What happens when light strikes paper for wrapping gifts?

Description : What happens when light strikes paper for wrapping gifts?

Last Answer : it go thow it

When light strikes an opaque material accurately describes what happens to the light rays?

Description : When light strikes an opaque material accurately describes what happens to the light rays?

Last Answer : Need answer

Assume light is traveling through glass, what happens when this light strikes the glass-air boundary?

Description : Assume light is traveling through glass, what happens when this light strikes the glass-air boundary?

Last Answer : Part of the light ray is reflected back into the glass and part of the light ray is refracted (bent) as it enters the air.

When light strikes perpendicular to the surface of a pane og glass how much light is reflcted and how much is transmitted at the firts surface?

Description : When light strikes perpendicular to the surface of a pane og glass how much light is reflcted and how much is transmitted at the firts surface?

Last Answer : Only about 4% is reflected, the rest is transmitted. 3. (29.1) When light strikes perpendicular to the surface of a pane of glass, how much light is reflected and how much is transmitted? Normal to the surface refers to a line that is drawn perpendicular to the surface (90°).

When light strikes perpendicular to the surface of a pane of glass, how much light is rflected and how much is transmitted at the first surface?

Description : When light strikes perpendicular to the surface of a pane of glass, how much light is rflected and how much is transmitted at the first surface?

Last Answer : It reverses direction and goes back through the original medium;part goes into the second medium.

A ray of white light strikes the surface of an object. If all the colours are reflected, the surface would appear (1) Black (2) White (3) Grey (4) Opaque

Description : A ray of white light strikes the surface of an object. If all the colours are reflected, the surface would appear (1) Black (2) White (3) Grey (4) Opaque

Last Answer : (2) White Explanation: Objects do not have any colour of their own. When light hits a surface, some of it is absorbed and some of it is reflected. The light that is reflected is ... appear white when they reflect all the wavelengths; they appear black when they absorb all visible wavelengths.

How do you reduce the loss that is produced when light strikes a flat polished end of a fiber optic? A. By painting the surface B. By inclining the surface C. By cooling D. By application of antireflection coating

Description : How do you reduce the loss that is produced when light strikes a flat polished end of a fiber optic? A. By painting the surface B. By inclining the surface C. By cooling D. By application of antireflection coating

Last Answer : D. By application of antireflection coating

A light ray traveling from glass into air strikes the glass-air surface at an angle 50 degrees to the normal. If the critical angle for the glass-air combination is 42 degrees, the percentage of light reflected from the surface is w) 6 x) 25 y) 38 z) 100

Description : A light ray traveling from glass into air strikes the glass-air surface at an angle 50 degrees to the normal. If the critical angle for the glass-air combination is 42 degrees, the percentage of light reflected from the surface is w) 6 x) 25 y) 38 z) 100

Last Answer : ANSWER: Z -- 100

A light ray traveling in benzene strikes the benzene-air surface at the critical angle. The angle of refraction of the light ray is: w) 30 degrees x) 60 degrees y) 90 degrees z) 180 degrees

Description : A light ray traveling in benzene strikes the benzene-air surface at the critical angle. The angle of refraction of the light ray is: w) 30 degrees x) 60 degrees y) 90 degrees z) 180 degrees

Last Answer : ANSWER: Y -- 90 DEGREES

What happens when carbon is heated with water vapour?

Description : What happens when carbon is heated with water vapour?

Last Answer : What is the answer ?

What happens when vapour if it water cools down?

Description : What happens when vapour if it water cools down?

Last Answer : The water vapour (often known as steam) is caused by bringing the liquid water to boiling point. When the water vapour cools it condenses back into liquid water.

What happens to a liquid, when the vapour pressure equals the atmospheric pressure? (1) The liquid cools (2) The liquid boils (3) No change (4) The liquid evaporates

Description : What happens to a liquid, when the vapour pressure equals the atmospheric pressure? (1) The liquid cools (2) The liquid boils (3) No change (4) The liquid evaporates

Last Answer : (2) The liquid boils Explanation: Ordinary evaporation is a surface phenomenon -since the vapor pressure is low and since the pressure inside the liquid is equal to atmospheric pressure plus ... pressure is equal to atmospheric pressure, bubbles form, and the vaporization becomes a volume phenomena.

What happens to a liquid, when the vapour pressure equals the atmospheric pressure? (1) The liquid cools (2) The liquid boils (3) No change (4) The liquid evaporates

Description : What happens to a liquid, when the vapour pressure equals the atmospheric pressure? (1) The liquid cools (2) The liquid boils (3) No change (4) The liquid evaporates

Last Answer : The liquid boils

Water always boils when its (A) Temperature reaches 100° C (B) Vapour pressure equals 76 cm of Hg (C) Saturated vapour pressure equals the external pressure on its surface (D) Saturated vapour pressure is less than the atmospheric pressure

Description : Water always boils when its (A) Temperature reaches 100° C (B) Vapour pressure equals 76 cm of Hg (C) Saturated vapour pressure equals the external pressure on its surface (D) Saturated vapour pressure is less than the atmospheric pressure

Last Answer : (C) Saturated vapour pressure equals the external pressure on its surface

Which one of the following statements is correct ? a) For water at 100o Celsius at sea level, the vapour pressure is equal to atmospheric pressure b) Surface energy (or tension) is caused by the force of adhesion between liquid molecules c) Viscosity of a fluid is the property exhibited by it both in static and in dynamic conditions d) Air is 50,000 times more compressible than water

Description : Which one of the following statements is correct ? a) For water at 100o Celsius at sea level, the vapour pressure is equal to atmospheric pressure b) Surface energy (or tension) is caused by ... it both in static and in dynamic conditions d) Air is 50,000 times more compressible than water

Last Answer : c) Viscosity of a fluid is the property exhibited by it both in static and in dynamic conditions

Write a short note on : a. Vapour pressure.  b. Surface tension  c. Viscosity.

Description : Write a short note on : a. Vapour pressure.  b. Surface tension  c. Viscosity.

Last Answer : Write a short note on : a. Vapour pressure. b. Surface tension c. Viscosity.

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 actual temperature drop across the heating surface in an evaporator depends on the (A) Feed (B) Depth of liquid over heating surface (C) Pressure difference between steam chest and vapour space (D) All (A), (B) and (C)

Description : The actual temperature drop across the heating surface in an evaporator depends on the (A) Feed (B) Depth of liquid over heating surface (C) Pressure difference between steam chest and vapour space (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

In sub-cooled boiling, (A) Temperature of the heating surface is less than the boiling point of the liquid (B) Temperature of the heating surface is more than the boiling point of the liquid (C) Bubbles from heating surface are absorbed by the mass of the liquid (D) Very large vapour space is necessary

Description : In sub-cooled boiling, (A) Temperature of the heating surface is less than the boiling point of the liquid (B) Temperature of the heating surface is more than the boiling point of the liquid (C) ... from heating surface are absorbed by the mass of the liquid (D) Very large vapour space is necessary

Last Answer : (B) Temperature of the heating surface is more than the boiling point of the liquid

Which of the following is an undesirable property of a manometricliquid? (A) Non-sticky & non-corrosive nature (B) High vapour pressure (C) Low viscosity & surface tension (D) Low co-efficient of thermal expansion

Description : Which of the following is an undesirable property of a manometricliquid? (A) Non-sticky & non-corrosive nature (B) High vapour pressure (C) Low viscosity & surface tension (D) Low co-efficient of thermal expansion

Last Answer : (B) High vapour pressure

The sensitiveness of a level tube decreases if (A) Radius of curvature of its inner surface is increased (B) Diameter of the tube is increased (C) Length of the vapour bubble is increased (D) Both viscosity and surface tension are increased

Description : The sensitiveness of a level tube decreases if (A) Radius of curvature of its inner surface is increased (B) Diameter of the tube is increased (C) Length of the vapour bubble is increased (D) Both viscosity and surface tension are increased

Last Answer : (D) Both viscosity and surface tension are increased

Pick out the wrong statement. (A) Surface tension of a substance vanishes at critical point, as there is no distinction between liquid and vapour phases at its critical point (B) Entropy of a system decreases with the evolution of heat (C) Change of internal energy is negative for exothermic reactions (D) The eccentric factor for all materials is always more than one

Description : Pick out the wrong statement. (A) Surface tension of a substance vanishes at critical point, as there is no distinction between liquid and vapour phases at its critical point (B) Entropy of ... is negative for exothermic reactions (D) The eccentric factor for all materials is always more than one

Last Answer : (D) The eccentric factor for all materials is always more than one

At the critical point of a substance (A) The surface tension vanishes (B) Liquid and vapour have the same density (C) There is no distinction between liquid and vapour phases (D) All (A), (B) and (C)

Description : At the critical point of a substance (A) The surface tension vanishes (B) Liquid and vapour have the same density (C) There is no distinction between liquid and vapour phases (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Pick out the wrong statement about nucleate boiling. (A) Bubble generation is by expansion of entrapped gas/vapour at small cavities in the surface (B) Surface temperature is greater than the saturation temperature of the liquid (C) Heat transfer from the surface of the liquid is less than that in film boiling (D) The temperature is less than that of film boiling

Description : Pick out the wrong statement about nucleate boiling. (A) Bubble generation is by expansion of entrapped gas/vapour at small cavities in the surface (B) Surface temperature is greater than the saturation ... less than that in film boiling (D) The temperature is less than that of film boiling

Last Answer : (D) The temperature is less than that of film boiling

Pick out the correct statement about the condensation. (A) Filmwise condensation gives a lower heat transfer rate than the dropwise condensation (B) Suitable coating or vapour additive is used to promote film wise condensation (C) If a condensing liquid does not wet the surface dropwise, even then condensation will take place on it (D) Reynolds number of condensing liquid is based on its mass flow rate

Description : Pick out the correct statement about the condensation. (A) Filmwise condensation gives a lower heat transfer rate than the dropwise condensation (B) Suitable coating or vapour additive is used to promote film ... place on it (D) Reynolds number of condensing liquid is based on its mass flow rate

Last Answer : (B) Suitable coating or vapour additive is used to promote film wise condensation

Alcohol is used in manometers because (A) It has low vapour pressure (B) It is clearly visible (C) It has low surface tension (D) It can provide longer column due to low density

Description : Alcohol is used in manometers because (A) It has low vapour pressure (B) It is clearly visible (C) It has low surface tension (D) It can provide longer column due to low density

Last Answer : Answer: Option D

The vapour pressure over the concave surface is (A) Less man the vapour pressure over the plane surface (B) Equal to the vapour pressure over the plane surface (C) Greater than the vapour pressure over the plane surface (D) Zero

Description : The vapour pressure over the concave surface is (A) Less man the vapour pressure over the plane surface (B) Equal to the vapour pressure over the plane surface (C) Greater than the vapour pressure over the plane surface (D) Zero

Last Answer : Answer: Option A

Water jet coming out of a stationary horizontal tube at speed v strikes horizontally a massive wall moving in opposite with same speed. Water come to

Description : Water jet coming out of a stationary horizontal tube at speed v strikes horizontally a massive wall moving in opposite with same speed. Water come to

Last Answer : Water jet coming out of a stationary horizontal tube at speed v strikes horizontally a massive wall ... energy of water jet striking the wall is zero

When a wave strikes a vertical breakwater in deep water, it is reflected back and on meeting another advancing wave of similar amplitude merges and rises vertically in a wall of water. This phenomenon is called (A) Surf (B) Clapotis (C) Fetch (D) Swell

Description : When a wave strikes a vertical breakwater in deep water, it is reflected back and on meeting another advancing wave of similar amplitude merges and rises vertically in a wall of water. This phenomenon is called (A) Surf (B) Clapotis (C) Fetch (D) Swell

Last Answer : (B) Clapotis

Can you tell me movies in which the world risks an apocalypse because the president of the USA launches nuclear strikes from the nuclear football?

Description : Can you tell me movies in which the world risks an apocalypse because the president of the USA launches nuclear strikes from the nuclear football?

Last Answer : Doctor Strangelove.

Does your local university have a two strikes you are out policy?

Description : Does your local university have a two strikes you are out policy?

Last Answer : No. A 3.9 is just .01 from an A. It’s a perfectly acceptable GPA. I graduated Magna Cum Laude with a 3.75.

The Saudis air strikes on Yemen are so brutal as to be considered by some as war crimes, will the US say anything or intervene as in Yugoslavia or just keep shipping the Saudi missiles and bombs to allow them to keep doing possible war crimes?

Description : The Saudis air strikes on Yemen are so brutal as to be considered by some as war crimes, will the US say anything or intervene as in Yugoslavia or just keep shipping the Saudi missiles and bombs to allow them to keep doing possible war crimes?

Last Answer : answer: war crime is a term that is hardly defined by anyone. It's one of those words that is thrown out for publicity and headlines. Right or wrong is sort of irrelevant in international relations. ... the aid of. All there is-two tribes. No other country really cares about what happens to Yemen.

Do you support the fast food strikes?

Description : Do you support the fast food strikes?

Last Answer : answer:I’m not after I heard that they are demanding $15/hour for working a register. 15!!! I’m really sick of the idea that minimum wage jobs are something to strive for and you should be able to pay rent and support 2–3 kids working 40 hours a week at McDonald’s. It’s ridiculous.

How do you react when tragedy strikes a friend?

Description : How do you react when tragedy strikes a friend?

Last Answer : answer:I am so sorry to hear about your friend's loss @Hawaii_Jake. I would send the card and include a personal letter. Perhaps, if this is something you can do for him, in a few month invite ... of emotions we are experiencing. I felt perhaps writing things down would help her. She said it did.

Should balls and strikes be called electronically?

Description : Should balls and strikes be called electronically?

Last Answer : No. It sort of takes the human element out of the game.

Just for fun jellies, who would you want to "b*t%h slap" when the clock strikes 2012 on New Year's and why?

Description : Just for fun jellies, who would you want to "b*t%h slap" when the clock strikes 2012 on New Year's and why?

Last Answer : The entire Republican presidential ticket.

What should be done when a chronic migraine strikes?

Description : What should be done when a chronic migraine strikes?

Last Answer : I know exactly how you feel, I get migraines periodically too. The only thing that really helps me is taking an Excedrin Migraine as soon as I see the aura. Those usually help, no other painkiller ... though. I try to lay down and get some sleep, in total darkness whenever they strike, though.

Major global disaster strikes! Do you want to survive?

Description : Major global disaster strikes! Do you want to survive?

Last Answer : I would want to go on until my position was inarguably untenable. Since, given your scenerio, there would be no other options, I would have to give it up.

What is the oddest odor that strikes you as memorable?

Description : What is the oddest odor that strikes you as memorable?

Last Answer : I like the smell of books!

What activities are there to do when boredom strikes?

Description : What activities are there to do when boredom strikes?

Last Answer : Masturbate. Works all the time.

why dont tons of fish get fried when lightning strikes the ocean?

Description : why dont tons of fish get fried when lightning strikes the ocean?

Last Answer : answer:*some* do, but not tons. The electricity dissipates quickly, as the entire ocean becomes the conductor/sink. Right at the strike location, anything swimming about is pretty much toast. ... the strike location) As you move further away, the current flow (amperage) decreases exponentially.

Does lightning kill fish when it strikes the ocean?

Description : Does lightning kill fish when it strikes the ocean?

Last Answer : answer:Interesting question.. From Basically lightning stays more on the surface of the water rather than penetrating it. That's because water is a reasonably good conductor, and a good conductor ... Dr. MacGorman adds that some electricity does penetrate the water, right at the strike point.

When lightening strikes the earth how deep does it go? Are buried hydro/phone lines at risk of frying?

Description : When lightening strikes the earth how deep does it go? Are buried hydro/phone lines at risk of frying?

Last Answer : answer:Here is some interesting data (emphasis is mine) from tests that Sandia Labs did after the Sago Mine explosion. (Sandia Labs are experts on lightning danger.) For measuring propagation ... a known ignition source of flammable methane mixtures that can accumulate in sealed sections of mines.

A ball A of mass 0.25 kg moving on a smooth horizontal table with a velocity of 10 m/s strikes an identical stationary ball B on the table. If the impact is perfectly elastic, the velocity of the ball B just after the impact will be a.2.5 m/s b.zero c.5 m/s d.10 m/s e.107 dynes

Description : A ball A of mass 0.25 kg moving on a smooth horizontal table with a velocity of 10 m/s strikes an identical stationary ball B on the table. If the impact is perfectly elastic, the velocity of the ball B just after the impact will be a.2.5 m/s b.zero c.5 m/s d.10 m/s e.107 dynes

Last Answer : c. 5 m/s

A body weighing 500 kg falls 8 cm and strikes a 500 kg/cm spring. The deformation of the spring will be a.?8 cm b.8 cm c.4 cm d.20.5 cm e.2 cm

Description : A body weighing 500 kg falls 8 cm and strikes a 500 kg/cm spring. The deformation of the spring will be a.?8 cm b.8 cm c.4 cm d.20.5 cm e.2 cm

Last Answer : c. 4 cm

When the clock strikes 13, what time is it? -Riddles

Description : When the clock strikes 13, what time is it? -Riddles

Last Answer : Time to get it fixed.

What time is it when the clock strikes 13? -Riddles

Description : What time is it when the clock strikes 13? -Riddles

Last Answer : Time to get the clock fixed