Physical Properties of Water

Q. Why do we see water droplets on the outer surface of a glass containing ice cold water?

Q. Can materials exist in all the three states?

Q.

Question 11

State whether the following statements are True or False. If false, write the correct statement
(a) Water vapour is the gaseous form of water.
(b) Ice is solid whereas snow is the semi-solid form of water.
(c) Ocean water cannot be used for domestic purposes.
(d) Rapid growth of industries is one of the causes for water shortage.

Q.

What is the water level?

Q. Water exists only in two forms namely ice (solid form) and the water which we use in our daily life (liquid form).

1. True
2. False

Q.

Why does a cooking gasbecome lighter after it has been used for few days?

Q. What happens to a higher metal oxide when it is heated in supply of oxygen?

1. Converts to lower oxide of metal along with the release of dioxygen gas
2. Melts down due to heat
3. Becomes ductile
4. Remains the same

Q. Why should a glass bottle completely filled with water never be kept in a freezer?

Q. The circulation of water between ocean and land is known as the ____.

1. water cycle
2. carbon cycle
3. nitrogen cycle
4. air cycle

Q.

Which of these items will float in a glass of water?

1. Coin

2. Marble

3. Ice Cube

4. Rock

Q.

What are the processes involved in the formation of rain?

1. Condensation, Sedimentation

2. Evaporation, Sedimentation

3. Evaporation, Condensation

4. Weathering, Condensation

Q.

A kind of matter which can sublime is

1. (a) water

2. (b) plastic

3. (c) milk

4. (d) iodine

Q. Name the terms for the following:
(e) The change of vapour into a liquid.

Q. Identify the form of the water in the given image.
​​​​​​​

1. Liquid
2. Solid
3. Gas
4. Semi-solid

Q. Identify the form of the water in the given image.
​​​​​​​

1. Liquid
2. Solid
3. Gas
4. Semi-solid

Q. Inter-conversion of states of matter is affected by:

1. changing the temperature.
2. increasing or decreasing the pressure.
3. changing both temperature and pressure.
4. all of the above

Q.

Name two naturally occurring gaseous forms of water.

Q. Water produces hydrogen and oxygen in the ratio of :

1. 1:1
2. 2:1
3. 2:3
4. 1:2

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

1. tiny
2. small
3. negligible
4. massive

Q.

Question 3

Which of the following are not the liquid forms of water?
(i) Snow
(ii) Lake water
(iii) River water
(iv) Water vapour
(v) Ice

Choose the correct combination from the options given below.
(a) (i), (iv) and (v)
(b) (i) and (ii)
(c) (ii) and (iii)
(d) (iv) only

Q.

Water exists in which of the following form(s):

1. Solid

2. Liquid

3. Gas

4. All of the above

Q. Water is in liquid form at room temperature.

1. True
2. False

Q.

The total water present on earth is called as 'hydrosphere'. It includes:

1. Ocean water
2. Glaciers
3. Rivers
4. Ponds

Q. Which of the following property does not describe a compound?

1. It is a pure substance.
2. It is composed of two or more elements.
3. Constituent atoms are mixed in any proportion by mass.
4. It has different properties as compared to its constituents.

Q. Complete the following chart by writing appropriate words in the boxes marked (a) to (e).

Q. Ice contains water in solid form whereas water vapour does not contain any water.

1. True
2. False

Q.

The substance that is composed of two or more elements, chemically combined with one another in a fixed proportion of mass is called ___

Q.

In which of the following states is the energy of particles maximum?

1. Can’t be said

2. Solid

3. Liquid

4. Gas

Q.

How much of an iceberg usually appears above the water line of the ocean?

1. 1/5th

2. 1/100th

3. 1/4th

4. 1/8th

Q.

Glaciers and ice sheets present on poles of earth contain the solid form of water. True or False?

1. True
2. False