Water Vapour

Q.

Why the taj mahal is yellow in colour

Q.

It is called ___ when rain and snow are mixed together and falls on the ground. (Sleet/Dew)

1. Sleet

Q.

What is the percentage of water vapour present in the earth’s atmosphere?

1. 2%

2. 0.2%

3. Variable

4. 0.1%

Q.

Light white flakes falling on the ground which is a frozen form of water vapour is called ___.

1. Snow

2. Hail

3. Dew

4. Mist

Q.

One of the following processes is not a step involved in the water-cycle operating in nature:

1. evaporation

2. transpiration

3. precipitation

4. photosynthesis

Q.

Most of the water found on the earth surface is fresh water. State if the statement is True/False.

1. True

2. False

Q.

___is the small, hard balls of ice which falls on the ground just like rain.

1. Hail

2. Mist

3. Snow

4. Dew

Q.

Water vapour in the air condenses to form _______ which is usually seen during winters near ground and visibility is very less.

1. Fog

2. Mist

3. Dew

4. Hail

Q.

Which of the following substance(s) pollute water bodies?

1. Sewage

2. Fertilizers

3. Pesticides

4. Detergents

Q.

Question 14

State whether the following statements are True or False. If false, give the correct statement.
(a) The process of water seeping into the ground is called filtration.
(b) 51% of the earth’s surface is covered with water.
(c) Year 2003 was observed as the International Year of Freshwater.
(d) Snow and ice both are solid forms of water.

Q.

Which of the following processes contributes towards water vapour content in the atmosphere?

1. Combustion

2. Respiration

3. Transpiration

4. Photosynthesis

Q.

Clouds are ___ collections of tiny water droplets and crystallized water molecules.

1. small

2. negligible

3. tiny

4. massive

Q. Why the sea water had salt? How salt come in sea water?

Q.

Which monument is affected by acid rain and suffering from marble cancer?

1. Red Fort

2. Qutub Minar

3. Taj Mahal

4. Jantar Mantar

Q.

When non-metallic oxides are dissolved in water ___________ are formed

1. Rivers

2. Lakes

3. Underground

4. Oceans and seas

Q.

___is the condensed form of water found over glasses, leaves and flowers in winter morning whereas its frozen form ___.(frost/dew)

Q.

7. How are snow or hails formed?

Q.

Assertion(A): If the humidity is high, the chance of rainfall is high.

Reason(R): If humidity is high, water vapour will condense to form rain.

1. A and R are true and R is the correct explanation of A.

2. A and R are true, but R is not the correct explanation of A.

3. A is true but R is false.

4. Both A and R are false.

Q. Will the water cycle be affected if the number of trees became fewer? [3 MARKS]

Q.

Which are the side effects of acid rain?

1. Pollutes rivers and the other aquatic ecosystem.

2. Reduces the fertility of the soil

3. Corrodes metal

4. Produces greenhouse gases

Q. Which of the following activities do not help in increasing the content of water vapour in air?

1. Transpiration
2. Evaporation
3. Respiration
4. Condensation

Q.

During the winter season, the presence of dew drops on leaves is a common sight in the gardens. Water changes its form during the formation of dew drops. In this process, water changes from _____ to ______ state.

1. Gaseous form to liquid form

2. Gaseous form to solid form

3. Liquid form to solid form

4. Liquid form to gaseous form

Q. The amount of water vapour present in air is calculated in terms of ___.

1. density
2. humidity
3. mass
4. volume

Q.

When non-metallic oxides are dissolved in rainwater and _____ are formed

1. Underground

2. Oceans and seas

3. Rivers

4. Lakes

Q.

Which of the following phenomena is explained by the figure given below?

1. Oxygen cycle

2. Carbon cycle

3. Nitrogen cycle

4. Water cycle

Q.

Variation of this constituent results in variation of humidity. Which constituent of air is this?

1. Carbon dioxide

2. Oxygen

3. Nitrogen

4. Water vapour

Q.

What are clouds?

1. Black fluffy bodies in the sky

2. A collection of tiny particles of liquid or solid water in the sky

3. A collection of white cottony filaments in the sky

4. A very old computing system

Q.

State true or false.
During the water cycle, water exists only in one form.

1. True

2. False

Q.

Describe the biological water cycle.

Q.

What are the processes involved in the formation of rain?

1. Condensation, Sedimentation

2. Evaporation, Condensation

3. Evaporation, Sedimentation

4. Fusion of clouds