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question_answer1)
Matter can be defined as something that
A)
Weight. done
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B)
Is made up of atoms and molecules done
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C)
Exists in three states. done
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D)
All the above done
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question_answer2)
Ice is the _______ form of water.
A)
Solid done
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B)
liquid done
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C)
Gasous done
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D)
All the above done
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question_answer3)
The forces of attraction between molecules is greatest in the _________ state.
A)
Liquid done
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B)
gaseous done
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C)
Solid done
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D)
all the above done
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question_answer4)
The state of matter which has no fixed shape but has definite volume is the
A)
Gasous state. done
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B)
Liquid state. done
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C)
Solid state. done
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D)
None of these done
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question_answer5)
Which of the following is true of the molecules of gases?
A)
They have a fixed volume. done
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B)
They have a fixed shape. done
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C)
They cannot move freely. done
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D)
They can move around freely. done
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question_answer6)
Ice melts when energy in the form of________ is supplied.
A)
Electricity done
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B)
heat done
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C)
Light done
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D)
sound done
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question_answer7)
In a bar of magnet the molecules are held by
A)
Strong forces of attraction. done
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B)
Weak forces of attraction. done
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C)
No forces of attraction. done
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D)
Strong forces of repulsion. done
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question_answer8)
The process of changing water to water vapor is called
A)
Sublimation. done
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B)
Condensation. done
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C)
Melting. done
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D)
Evaporation. done
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question_answer9)
A compound is formed when
A)
Only one kind of atoms combine. done
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B)
Two or more kinds of atoms combine. done
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C)
An atom is further broken in to smaller particles. done
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D)
All of these done
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question_answer10)
Matter is made up tiny particles called
A)
Atoms. done
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B)
Molecules. done
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C)
Cells. done
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D)
Ions. done
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question_answer11)
Which of the following determines the state of matter?
A)
Size done
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B)
Shape done
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C)
Arrangement of molecules done
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D)
Structure done
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question_answer12)
The intermolecular space between molecules is maximum in a
A)
solid. done
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B)
Liquid. done
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C)
Gas. done
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D)
All of these done
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question_answer13)
When a solid is heated, it melts to form
A)
A liquid. done
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B)
a steam. done
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C)
Ice. done
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D)
a viscous liquid. done
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question_answer14)
Which of these processes involves change of state from the liquid to gaseous state?
A)
Evaporation done
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B)
Condensation done
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C)
Melting done
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D)
Freezing done
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question_answer15)
Substance 'P' does not have a fixed volume. It occupies the total space of the container and it can be compressed. What is 'P' likely to be?
A)
Solid done
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B)
Liquid done
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C)
Gas done
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D)
All of these done
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question_answer16)
Water present in container 'P' is transferred to container 'Q' as shown in the figure. Which of the following will undergo a change because of the transfer?
A)
Volume done
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B)
Mass done
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C)
Temperature done
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D)
Shape done
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question_answer17)
When we heat a substance in solid form, it becomes liquid and then into gas. This shows that by heating, the space occupied by the substance generally:
A)
Increases done
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B)
decrease done
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C)
Remains same done
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D)
changes minutely done
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question_answer18)
In the table given below, states of matter, their properties and examples are represented by letters W, X, Y, Z.
State of matter | Properties | Example |
W | Has a definite shape | Book |
Liquid | X | Petrol |
Y | Has no definite volume or shape | Z |
Carbon dioxide can be placed in the place of letter________.
A)
X done
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B)
Y done
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C)
Z done
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D)
W done
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question_answer19)
The picture shows the process of _________.
A)
Melting done
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B)
boiling done
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C)
Condensation done
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D)
freezing done
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question_answer20)
The force of attraction between molecules is the strongest in
A)
B)
C)
D)
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question_answer21)
The forces of attraction between the molecules is the strongest in
A)
Liquids. done
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B)
Solids. done
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C)
Gaseous. done
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D)
All the three done
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question_answer22)
Water at room temperature is
A)
A solid. done
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B)
A liquid. done
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C)
A gas. done
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D)
Water vapor done
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question_answer23)
When a liquid changes into a solid, the process is called
A)
Freezing. done
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B)
Condensation. done
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C)
Melting. done
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D)
Evaporation done
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question_answer24)
When a solid changes into a liquid, the process is called
A)
Freezing. done
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B)
Vaporization. done
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C)
Melting. done
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D)
Condensation. done
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question_answer25)
When a liquid turns into its vapor, the process is
A)
Evaporation. done
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B)
Condensation. done
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C)
Freezing. done
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D)
All of these done
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question_answer26)
The material that dissolves in a liquid is a
A)
Solute. done
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B)
Solvent. done
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C)
Residue. done
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D)
Solution. done
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question_answer27)
Solvents are mostly
A)
Solids. done
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B)
Liquids. done
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C)
Gases. done
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D)
All the three done
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question_answer28)
Which of these is/are present in sugar molecules?
A)
Oxygen done
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B)
Hydrogen done
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C)
Carbon done
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D)
All of these done
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question_answer29)
________ dissolve________.
A)
Solutes, solvents done
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B)
Solvents, solutes done
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C)
Solvents, solutions done
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D)
Solution, solvents done
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question_answer30)
Which gases of these combines to form a molecule of water?
A)
Oxygen done
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B)
Hydrogen done
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C)
Carbon dioxide done
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D)
Both (a) and (b) done
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question_answer31)
What is the chemical formula of water?
A)
B)
C)
D)
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question_answer32)
Oxygen, nitrogen and hydrogen may be grouped together, because at room temperature they are all
A)
Suspensions. done
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B)
Gases. done
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C)
Colloids. done
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D)
Solids. done
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question_answer33)
Which of the following changes is possible with the addition of heat?
A)
Water vapor changes to liquid water. done
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B)
Water vapor changes to ice. done
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C)
Ice changes to liquid water. done
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D)
Liquid water changes to ice. done
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question_answer34)
What makes liquid flow?
A)
In liquids, particles are tightly packed, done
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B)
In liquids, particles are packed in a rigid pattern. done
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C)
In liquids, particles are not tightly packed and can slide. done
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D)
All of these done
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question_answer35)
In which of these processes does steam change to water?
A)
Evaporation done
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B)
Melting done
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C)
Freezing done
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D)
Condensation done
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question_answer36)
Which of these statements is NOTTRUE?
A)
Air is not matter as we cannot see it done
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B)
The smallest particle of an element is an atom. done
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C)
In a solid, the molecules are close together than in a gas. done
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D)
Matter is made up of atoms and molecules. done
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question_answer37)
A Identify X, Y and Z.
A)
X-gas, Y-solid, Z-liquid done
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B)
X-liquid, Y-solid, Z-gas done
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C)
X-gas, Y-liquid, Z-solid done
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D)
X-solid, Y-liquid, Z-gas done
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question_answer38)
Read the following table.
Substance | Solvent | Remark |
Sand | Water | Does not dissolve |
Sugar | Water | Dissolves |
Salt | Water dissolves | Dissolves |
Water | Kerosene | Does not dissolve |
Oxygen | Water | Dissolves |
Name the solutes which are soluble in water?
A)
Sand and sugar done
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B)
Sand and salt done
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C)
Salt and kerosene done
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D)
Sugar and salt done
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question_answer39)
Water vapor and steam are similar because they
A)
have no definite shape and no definite volume. done
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B)
Have definite shape and no definite volume. done
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C)
Have no definite shape but definite volume done
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D)
Has definite mass and definite volume done
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question_answer40)
Which of the following can be compressed?
P: steam |
Q: oxygen |
R: carbon dioxide |
A)
Only P and Q done
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B)
Only P and R done
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C)
Only Q and R done
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D)
P, Q and R done
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