You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard VI

Geography

Natural resources

Dew is formed...

Question

Dew is formed when ________.

the wind is too dry to cause rainfall

No worries! We‘ve got your back. Try BYJU‘S free classes today!

the moisture from the air is deposited on a cool surface

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

the sky is overcast at night

No worries! We‘ve got your back. Try BYJU‘S free classes today!

None of the above

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B the moisture from the air is deposited on a cool surface
Dew is formed when the moisture from the air is deposited on a cool surface.

Suggest Corrections

Similar questions

Q. At the moment dew formation starts on a cool night, the air:

Q. Assertion :On a rainy day sound travel faster than on a dry day. Reason: When moisture is present in air the density of air increases.

Q. The moisture content of a gas is often expressed in terms of the dew point. The dew point is the temperature to which the gas must be cooled before the gas becomes saturated with water vapour. At this temperature, water or ice (depending on the temperature) will be deposited on a solid surface. Dew point of

H_{2} O

- 43^{0} C

at which vapour pressure of ice formed is

0.07 m m

. Assuming that the

C a C l_{2}

owes its desiccating properties to the formation of

C a C l_{2} \cdot 2 H_{2} O

, calculate :
(i)

K_{p}

at that temperature of the reaction,
(ii)

Δ G

C a C l_{2} (s) + 2 H_{2} O (g) ⇌ C a C l_{2} \cdot 2 H_{2} O (s)

Read the following passage and answer the (four) items that follow:

The transfer of heat and water vapor from the ocean to the air above it depends on disequilibrium at the interface of the water and the air. Within about a millimeter of the water, air temperature is close to that of the surface water and the air is nearly saturated with water vapor. But the differences, however small, are crucial, and the disequilibrium is maintained by air near the surface mixing with air higher up, which is typically appreciably cooler and lower in water-vapor content. The air is mixed by means of turbulence that depends on the wind for its energy. As wind speed increases, so does turbulence, and thus the rate of heat and moisture transfer. Detailed understanding of this phenomenon awaits further study. An interacting and complicating phenomenon is wind-to-water transfer of momentum that occurs when waves are formed. When the wind makes waves, it transfers important amounts of energy—energy that is therefore not available to provide turbulence

Q26. According to the passage, wind over the ocean generally does which of the following?

1. Causes relatively cool, dry air to come into proximity with the ocean surface.

2. Maintains a steady rate of heat and moisture transfer between the ocean and the air.

3. Causes frequent changes in the temperature of the water at the ocean’s surface.

Q. A wet porous substance in the open air loses its moisture at a rate proportional to the moisture content. if a sheet hung in the wind loses half its moisture during the first hour, then the time when it would have lost

99.9 %

of its moisture is (weather conditions remaining same)

Join BYJU'S Learning Program

Dew is formed when ________.

The correct option is B the moisture from the air is deposited on a cool surfaceDew is formed when the moisture from the air is deposited on a cool surface.

The correct option is B the moisture from the air is deposited on a cool surface
Dew is formed when the moisture from the air is deposited on a cool surface.