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PT-4 matter in our surroundings

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

The boiling point of alcohol is 78°C. What is this temperature in Kelvin scale:

a)
351.15 K
b)
156.4 K
c)
89.6 K
d)
273.15 K
2.

In which phenomena water changes into water vapour below its B.P.?

a)
Condensation
b)
Evaporation
c)
Freezing
d)
Sublimation
3.

The boiling point of water on Celsius and Kelvin scale respectively is:

a)
50°C, 273.15 K
b)
150°C, 473.15 K
c)
0°C, 273.15 K
d)
100°C, 373.15 K
4.

The liquid which has the highest rate of evaporation is:

a)
Ethanol
b)
Vegetable oil
c)
Milk
d)
Water
5.

When we put some crystals of potassium permanganate in a beaker containing water, we observe that after sometime whole water has turned pink. This is due to:

a)
The beaker is reflecting pink light into the water
b)
The water is contaminated with pink dye
c)
Potassium permanganate crystals dissolve and release pink/purple colored ions
d)
Potassium permanganate crystals absorb all the water and turn pink
6.

The state of matter which consists of super energetic particles in the form of ionized gases is called:

a)
liquid
b)
solid
c)
gas
d)
plasma
7.

The force that binds the particles of matter together is known as:

a)
electromagnetic force
b)
weak nuclear force
c)
gravitational force
d)
strong nuclear force
8.

The change of a liquid into vapour is called:

a)
evaporation
b)
freezing
c)
sublimation
d)
condensation
9.

Which of the following describes the liquid phase?

a)
Option A: It has a definite volume but no definite shape
b)
Option C: It has no definite volume and no definite shape
c)
Option B: It has a definite volume and definite shape
d)
Option D: It has no volume and definite shape
10.

When a teaspoon of solid sugar is dissolved in a glass of liquid water, what phase or phases are present after mixing:

a)
Plasma
b)
Solid
c)
Gas
d)
Liquid
11.

Volume of a gas at a particular temperature and on atmospheric pressure is 200 ml. Keeping the temperature constant if pressure is increased to 5 atmosphere, then volume of the gas will be:

a)
500 ml
b)
300 ml
c)
100 ml
d)
40 ml
12.

Equal volumes of all gases under similar conditions of temperature and pressure contain equal numbers of molecules. This statement was made by:

a)
Galileo
b)
Avogadro
c)
Newton
d)
Einstein
13.

All gases will occupy zero volume when the temperature is reduced to:

a)
Room temperature
b)
Freezing point
c)
Absolute zero temperature
d)
Boiling point
14.

Non- reacting gases have a tendency to mix with each other. This phenomenon is known as:

a)
Combustion
b)
Condensation
c)
Evaporation
d)
Diffusion
15.

gas which obeys the gas laws is known as:

a)
ideal gas
b)
fantastic gas
c)
super gas
d)
magical gas
16.

What is the term used to describe the phase change of a liquid to a gas?

a)
vaporization
b)
sublimation
c)
condensation
d)
solidification
17.

What term is used to describe the phase change of a solid to a liquid?

a)
melting
b)
freezing
c)
evaporation
d)
condensation
18.

Which has the least energetic molecules?

a)
Gas
b)
Solid
c)
Plasma
d)
Liquid
19.

In which phase of matter would you expect compound (alcohol exists) at room temperature?

a)
Liquid
b)
Plasma
c)
Gas
d)
Solid
20.

Which of these choices will not change the state of matter?

a)
Mixing different colors of paint
b)
Heating ice until it melts
c)
Freezing water to make ice cubes
d)
Burning wood to create ash