Gases

Q. Distinguish between solids, liquids and gases on the basis of their following properties :
(a) compressibility
(b) fluidity
(c) rigidity
(d) expansion on heating

Q.

Name the physical state of matter which can flow but cannot fill the vessels completely.

Q.

In gases, the force of attraction between molecules is -------------------.

Q.

Explain the characteristics of gases.

Q.

Which one can be compressed by applying pressure?

1. Solid

2. Liquid

3. Gas

4. All of these

Q.

One of the characteristic properties of gases is that:

1. Gases are not at all rigid

2. Gases are not compressible

3. Gases have particles in fixed positions

4. Gases have high density

Q.

Name four gaseous substances, which are pure.

Q.

Explain why gases have neither definite shape nor definite volume.

Q.

Explain the following. Gases are highly compressible

Q. How large amounts of gases can be transported easily in cylinders? [2 Mark]

Q. Arrange in increasing order of force of attraction among the constituent particles.

1. Air
2. Water
3. Toothpaste
4. Iron rod

Q. Which of the following material exists in gaseous form?

1. Smoke
2. Candle wax
3. Paper
4. Oil

Q. Liquids and gases have the ability to flow.

1. False
2. True

Q. Gases occupy space.

1. False
2. True

Q. Arrange in increasing order of force of attraction among the constituent particles.

1. Air
2. Water
3. Toothpaste
4. Iron rod

Q.

Which of the following are the characteristics of a gaseous state?

1. Closely packed, incompressible, fixed shape

2. Highly compressible, no fixed size and shape

3. Fixed-size and shape, incompressible

4. fixed volume, compressible, definite shape

Q. Distinguish between solids, liquids and gases on the basis of their following properties :
(a) compressibility
(b) fluidity
(c) rigidity
(d) expansion on heating

Q. have no definite shape and volume.

1. Gases
2. Solids
3. Liquids

Q. Three containers each having a volume of 1 m${}^3$ contain 1 m${}^3$ of substance X, Y and Z. X is a solid, Y is a liquid and Z is a gas. X, Y and Z are then carefully transferred without spillage to another three containers having a volume of is 5 m${}^3$ each. The new volumes of X, Y and Z will be:

1. X = Y= Z = 5 m${}^3$
2. X = Y= Z = 1 m${}^3$
3. X = 5 m${}^3$, Y = Z = 1 m${}^3$
4. X = Y = 1 m${}^3$, Z = 5 m${}^3$

Q. At 4${}^{\circ }$C, water starts expanding and continues to do so till 0${}^{\circ }$C.

1. True
2. False

Q. A large volume of gases can be put into small cylinders and transported easily. This is because gases:

1. Do not have volume
2. Have a definite shape
3. Do not have a shape
4. Have high compressibility

Q. A tightly closed container contains 500 ml of gas. Now, the gas is carefully transported into a 1000 ml container without any leakage. What is the volume of gas in the new container?

1. 250 ml
2. 500 ml
3. 1000 ml
4. 1500 ml

Q.

What is the shape of the gas in a cylindrical can of deodorant?

1. Spherical
2. Cubical
3. Cylindrical
4. Random shape