1. Which of the following is not considered as matter?
a. Air
b. Water
c. Sun
d. Light
2. The intermolecular force of attraction is maximum in
a. Solids
b. Liquids
c. Gases
d. Both a and c
3. Fluidity is maximum in
a. Solids
b. Liquids
c. Gases
d. All of these
4. Gases
a. Cannot be compressed easily
b. Occupy the entire space in the container
c. Have a definite shape
d. Cannot flow
5. Which of the following have only one free surface?
a. Solids
b. Liquids
c. Gases
d. All of these
Answer (2)
The answers to the questions are as follows: (1) d. Light is not matter; (2) a. Solids have maximum intermolecular forces; (3) c. Gases have maximum fluidity; (4) b. Gases occupy the entire space; (5) b. Liquids have one free surface.
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Let's go through each question step-by-step to provide you with a clear understanding:
Which of the following is not considered as matter?
a. Air : Air is considered matter because it has mass and occupies space.
b. Water : Water is also matter as it is a liquid with mass and volume.
c. Sun : The sun is matter because it is made of gases and has mass.
d. Light : Light is not considered matter. It is a form of energy.
Correct choice : d. Light
The intermolecular force of attraction is maximum in:
a. Solids : Yes, solids have the maximum intermolecular forces. This is why they maintain a definite shape.
b. Liquids : Less than solids, more than gases.
c. Gases : The intermolecular forces are minimal.
d. Both a and c : Not correct because in gases the force is minimal.
Correct choice : a. Solids
Fluidity is maximum in:
a. Solids : Solids do not flow easily.
b. Liquids : Liquids flow, but not as easily as gases.
c. Gases : Gases have maximum fluidity because they flow freely and occupy space fully.
d. All of these : Not correct because solids do not exhibit fluidity.
Correct choice : c. Gases
Gases:
a. Cannot be compressed easily : Incorrect, gases can be compressed easily.
b. Occupy the entire space in the container : Correct, gases fill the container.
c. Have a definite shape : Incorrect, gases take the shape of their container.
d. Cannot flow : Incorrect, gases flow freely.
Correct choice : b. Occupy the entire space in the container
Which of the following have only one free surface?
a. Solids : Solids have fixed shapes and surfaces.
b. Liquids : Yes, liquids form a free surface at the top.
c. Gases : Gases do not have a free surface.
d. All of these : Not correct because gases do not have distinct surfaces.
Correct choice : b. Liquids
This examination of each option will help clarify why each answer is correct based on the properties and definitions associated with matter and the states it can exist in.
