Matter In Our Surrounding Test-02

This is Matter in our Surrounding Test-02 for CBSE class 09 Science.. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

An Almirah is a solid because its

A
All of these
Correct
B
hard and rigid
C
density is very high
D
shape doesn’t change when pressed

Arrange the following substances in increasing order of attraction between the particles: water, sugar, oxygen.

A
water < sugar < oxygen
B
sugar < water <oxygen
C
sugar < oxygen < water
D
oxygen < water < sugar
Correct

The inter-particle forces are the strongest in

A
Carbon dioxide
B
Sodium Bromide
Correct
C
Ammonia
D
Ethyl alcohol

Pressure on the surface of a gas is increased. What will happen to the inter-particle forces?

A
They will decreases
B
None of these
C
They will remain constant
D
They will increase
Correct

Statement A: A substance is said to be in the liquid state if under normal pressure its M. P. is below the room temperature. Statement B: The melting point of solid and the freezing point of liquid is different. Which of the two statements is true?

A
Both the statement A and B
B
Statement B
C
Statement A
Correct
D
Neither statement a nor statement B

Find the incorrect statement

A
Solids have negligible K. E. of the particles.
B
Potassium permanganate is orange in colour.
Correct
C
Gases have maximum fluidity and least rigidity.
D
Inter-particle attraction depends on the physical state of the matter

Which of the following statements is not true?

A
Solid state is the most compact state of a substance
B
Matter is continuous in nature
Correct
C
Particles which constitute the matter follow a zig – zag path
D
Inter-particle spaces are maximum in the gaseous state of a substance

The melting points of two solids [A] and [B] are 300K and 350K respectively. Which has more inter-particles forces?

A
[A]
B
[B]
Correct
C
Information not enough.
D
both have same inter-particles forces

Match the following with correct response. (1) Dry ice (2) Humidity (3) Temperature (4) Liquefied gas (A) Reduce evaporation (B) Increasing pressure reducing temperature (C) Increases evaporation (D) Solid carbon-dioxide

A
1-C, 2-B, 3-D, 4-A
B
1-D, 2-A, 3-C, 4-B
Correct
C
1-A, 2-C, 3-B, 4-D
D
1-B, 2-D, 3-A, 4-C

Match the following with correct response. (1) Fluidity (2) Rigidity (3) Density (4) Incompressibility (A) Flow (B) Mass per unit Volume (C) Inflexible (D) Least intermolecular space

A
1-A, 2-C, 3-B, 4-D
Correct
B
1-B, 2-D, 3-A, 4-C
C
1-D, 2-A, 3-C, 4-B
D
1-C, 2-B, 3-D, 4-A

What are the characteristics of the particles of matter? A Particles of matter are in continuous motion B Particles of matters do not have spaces between them C Particles of matter attract each other D Particles of matter are very large in size.

A
(a) and (c) are correct
Correct
B
(b) and (c) are correct
C
(a), (b) and (c) are correct
D
All of these

A substance upon heating directly changes into gaseous state. What is this change called?

A
Sublimation
Correct
B
Condensation
C
Fusion
D
Melting

A gas can be best liquefied

A
By increasing the temperature
B
None of these
C
By increasing the pressure and reducing the temperature
Correct
D
By lowering the pressure

The evaporation of a liquid occur only at

A
temperature more than \({\text{1}}{00^0}{\text{C}}\)
B
all temperatures
Correct
C
fixed temperature
D
temperature less than \({\text{1}}{00^0}{\text{C}}\)

Which of the following factors are responsible for the change of state of solid \({\text{C}}{{\text{O}}_{\text{2}}}\)into Vapours?

A
Decrees in pressure
B
both Decrees in pressure and Increase in temperature
Correct
C
Increase in temperature
D
Increase in pressure