Chemistry 9 Chapter 5 MCQs Tests

In this post, we have prepared 2 MCQs tests of Federal Board Chemistry 9 Chapter 5 MCQs Tests. For more Class 9 Chemistry MCQs Tests visit this page.

Chemistry 9 Chapter 5 MCQs Tests

Practice MCQs Test No 1

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Class 9 Chemistry
Chapter 5
Practice MCQs Test No 1

1 / 10

Sublimation is usually used to purify _____ state of matter.

solids

semiliquid

liquids

gases

2 / 10

Which of the following changes decrease the vapour pressure of water kept in a sealed vessel?

Adding salt to water

Decreasing the temperature of water

Decreasing the quantity of water

Decreasing the volume of the vessel to one-half

3 / 10

Evaporation causes _____ effect ,due to this effect water is contained in the pitcher.

heating

increase in density

cooling

increase in weight

4 / 10

Melting points of amorphous solid will be in _____.

definite temperature value

a single positive value of temperature

a single negative value of temperature

a particular range of temperature

5 / 10

As pressure decreases, boiling point ___

decreases

increases then decreases

decreases then increases

increases

6 / 10

By touch, glass imparts a hard appearance but microscopically atoms may be _____ arranged.

irregularly

uniformly

regularly

three dimensionally

7 / 10

Water bubbles arising in the beaker provided with the temperature of 100 °C  is an example of _____.

evaporation

distillation

compression

boiling

8 / 10

The boiling point of water is 100 °C, where internal vapour pressure becomes equal to atmospheric pressure. What is that atmospheric pressure?

760 mm Hg

1 atm

101.325 kpa

all of the above

9 / 10

_____ phase of physical states that can never be achieved in sublimation process.

liquids

semisolid

solids

gases

10 / 10

Liquids with weak intermolecular forces

contain a lot of kinetic energy

easily evaporate

cannot diffuse

freeze easily

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Practice MCQs Test No 2

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278

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Class 9 Chemistry
Chapter 5
Practice MCQs Test No 2

1 / 10

Statement related to process of evaporation that is incorrect is _____.

evaporation takes place within the liquid

no bubbles are formed in the liquid during evaporation

temperature may change during evaporation

evaporation occurs at any temperature

2 / 10

Identify the figure (a) and ( b)

( a ) amorphous ( b) crystaline

Both are amorphous

( a ) crystalline ( b) amorphous

Both are crystalline

3 / 10

If surface area of liquid is large then evaporation will be _____.

small

minute

large

moderate

4 / 10

________ is usually used to purify liquids.

evaporation

condensation

sublimation

distillation

5 / 10

Amount of vapour pressure of liquid decreases _______

At sea level

None of the above

Depth

Above sea level

6 / 10

Melting points of crystalline solids are _____ due to strong intermolecular forces existing .

medium

low

sharp

least

7 / 10

A person living in hill stations observed that cooking food without using pressure cooker takes more time. The reason for this observation is that at high altitude_____

Pressure increases

Temperature increases

Pressure decreases

Pressure remain constant

8 / 10

When the atmospheric pressure equals the equilibrium vapor pressure ___ occurs.

freezing

sublimation

boiling

melting

9 / 10

Which figure has a repetitive pattern in its structure?

Fig B

Both A and B

Fig A

None of the above

10 / 10

The particles in ___ are always vibrating, but don't move past each other.

solids

solids and liquids

gases

liquid

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