MCQ on Class 9 Is Matter Around us Pure

Last updated on August 30th, 2023 at 01:44 am

What is the medium in which the dispersed phase particles are distributed called?

1. a) Solute
2. b) Solvent
3. c) Dispersed phase
4. d) Dispersion medium

Answer: d) Dispersion medium

 

Which of the following statements is true about pure substances?

1. a) Pure substances can only be compounds.
2. b) Pure substances can only be elements.
3. c) Pure substances can be elements or compounds.
4. d) Pure substances can be broken down by chemical reactions.

Answer: c) Pure substances can be elements or compounds.

 

What is an element?

1. a) A substance composed of two or more different types of elements.
2. b) A substance that can be broken down into simpler substances by chemical reactions.
3. c) A form of matter that cannot be broken down by chemical reactions into simpler substances.
4. d) A substance that exhibits the properties of its constituent elements or compounds.

Answer: c) A form of matter that cannot be broken down by chemical reactions into simpler substances.

 

What is a compound?

1. a) A substance composed of two or more different types of elements.
2. b) A substance that can be broken down into simpler substances by chemical reactions.
3. c) A form of matter that cannot be broken down by chemical reactions into simpler substances.
4. d) A substance that exhibits the properties of its constituent elements or compounds.

Answer: a) A substance composed of two or more different types of elements.

 

How do the properties of a compound compare to its constituent elements?

1. a) The properties of a compound are the same as its constituent elements.
2. b) The properties of a compound are different from its constituent elements.
3. c) The properties of a compound can be both the same and different from its constituent elements.
4. d) The properties of a compound cannot be determined.

Answer: b) The properties of a compound are different from its constituent elements.

 

How do the properties of a mixture compare to its constituting elements or compounds?

a) The properties of a mixture are the same as its constituting elements or compounds.

b) The properties of a mixture are different from its constituting elements or compounds.

c) The properties of a mixture can be both the same and different from its constituting elements or compounds.

d) The properties of a mixture cannot be determined.

Answer: a) The properties of a mixture are the same as its constituting elements or compounds.