MCQ Questions for Class 9 Science Chapter 1 Matter in Our Surroundings

Solving the Matter in Our Surroundings Multiple Choice Questions of Class 9 Science Chapter 1 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Matter in Our Surroundings Class 9 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 1 Science Class 9 and cross-check your answers during preparation.

Multiple Choice Questions

Question 1.
The mass per unit volume of a substance is:
(a) acceleration
(b) density
(c) velocity
(d) weight

Answer

Answer: (b) density


Question 2.
The melting point of ice is:
(a) 273.16 K
(b) 723.16 K
(c) 263.16 K
(d) 373 K

Answer

Answer: (a) 273.16 K


Question 3.
What is dry ice?
(a) Solid carbon dioxide
(b) Nitrogen oxide
(c) Carbon mono oxide
(d) None of them

Answer

Answer: (a) Solid carbon dioxide


Question 4.
Which of the following state is responsible for the glow in the sun and stars?
(a) Solid
(b) Liquid
(c) Plasma
(d) Gas

Answer

Answer: (c) Plasma


Question 5.
Which of the following phenomenon takes place when we add a drop of Dettol into the water?
(a) osmosis
(b) diffusion
(c) sublimation
(d) none of them

Answer

Answer: (b) diffusion


Question 6.
During summer, water kept in an earthen pot becomes cool because of the phenomenon of:
(a) diffusion
(b) transpiration
(c) osmosis
(d) evaporation

Answer

Answer: (d) evaporation


Question 7.
Which condition out of the following will increase the evaporation of water?
(a) Increase in temperature of the water
(b) Decrease in temperature of the water
(c) Less exposed surface area of water
(d) Adding common salt to the water

Answer

Answer: (a) Increase in temperature of the water


Fill in the Blanks.

Question 8.
Early Indian philosophers classified matter into _______ basic forms or elements.

Answer

Answer: five


Question 9.
The common unit of measuring volume is ________

Answer

Answer: litre


Question 10.
With increase in temperature the kinetic energy of the particles _________

Answer

Answer: increases


Question 11.
The rate of diffusion of liquids is _______ than that of solids.

Answer

Answer: higher


Question 12.
To change a temperature on the Kelvin scale to the Celsius scale you have to subtract ________ from the given temperature.

Answer

Answer: 273


Question 13.
______ is the amount of water vapour present in the air.

Answer

Answer: Humidity


True/False.

Question 14.
Gases are highly compressible as compared to solids and liquids.

Answer

Answer: True


Question 15.
Liquids have fixed volume and shape.

Answer

Answer: False


Question 16.
Compressed natural gas (CNG) is used as fuel these days in vehicles.

Answer

Answer: True


Question 17.
The state of matter cannot be changed by changing temperature or pressure.

Answer

Answer: False


Question 18.
The states of matter are inter-convertible.

Answer

Answer: True


Question 19.
In solids, the space between the particles is maximum.

Answer

Answer: False


Match the Column.

Question 20.

AB
1. Unit of temperature(i) Kilogram (kg)
2. S.I. unit of mass(ii) Kilogram per cubic metre
3. S.I. unit of pressure(iii) Newton
4. Unit of weight(iv) Kelvin
5. Unit of density(v) Pascal
Answer

Answer:

AB
1. Unit of temperature(iv) Kelvin
2. S.I. unit of mass(i) Kilogram (kg)
3. S.I. unit of pressure(v) Pascal
4. Unit of weight(iii) Newton
5. Unit of density(ii) Kilogram per cubic metre

Answer in one Word/Sentence.

Question 21.
What is that process known as in which a solid is converted directly into the gaseous state without coming to a liquid state?

Answer

Answer: Sublimation


Question 22.
How many states of matter exist normally in nature?

Answer

Answer: Three states


Question 23.
What is that temperature called at which solid melts to become a liquid at the atmospheric pressure?

Answer

Answer: Melting point


Question 24.
What is the state of matter which has maximum compressibility?

Answer

Answer: Gaseous state


 


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