-
question_answer1)
A substance that occupies space and has mass is called:
A)
Air done
clear
B)
Matter done
clear
C)
Soil done
clear
D)
Water done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer2)
Which among the following is not a name of one of the state of matter?
A)
Solid done
clear
B)
Liquid done
clear
C)
Glass done
clear
D)
Gas done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer3)
Replace the numbers in the given figure -by correct terms.
A)
1 - Condensation, 2 - Freezing, 3 ? Evaporation done
clear
B)
1 - Evaporation, 2 - Condensation, 3 ? Freezing done
clear
C)
1 - Freezing, 2 - Evaporation, 3 ? Condensation done
clear
D)
1 - Evaporation, 2 - Freezing, 3 ? Condensation done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer4)
Match the following:
Column A | Column B |
i. Ice cream | A. Liquid |
ii. Water vapour | B. Solid |
iii. Melted ice cream | C. Gas |
A)
(i - C), (ii - A), (iii - B) done
clear
B)
(i - B), (ii - A), (iii - C) done
clear
C)
(i - B), (ii - C), (iii - A) done
clear
D)
(i - A), (ii - C), (iii - B) done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer5)
To loosen a lid of ajar we keep it in hot water because:
A)
Hot water tighten the lid. done
clear
B)
Warm water enters into the jar. done
clear
C)
Heating can expand the lid and it open out easily. done
clear
D)
Heating contracts the lid of the jar. done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer6)
In ice which kind of particle pattern is there?
A)
Flexible done
clear
B)
Rigid done
clear
C)
Loose done
clear
D)
All the above done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer7)
The process in which solid changes directly into vapours without changing in liquid state is:
A)
Evaporation done
clear
B)
Sublimation done
clear
C)
Condensation done
clear
D)
Boiling done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer8)
Name the small particles of which a matter is made up of.
A)
Patterns done
clear
B)
Substances done
clear
C)
Molecules done
clear
D)
Gases done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer9)
On heating a substance the movement of particles:
A)
Become faster done
clear
B)
Become slower done
clear
C)
Remains the same done
clear
D)
Become still done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer10)
The electric cables appear to hang loosely from the poles in summer because of:
A)
Freezing of electric cables. done
clear
B)
Evaporation of electric cables. done
clear
C)
Expansion of electric cables. done
clear
D)
Contraction of electric cables. done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer11)
Smallest unit of a matter is known as ____.
A)
Molecule done
clear
B)
Atom done
clear
C)
Substance done
clear
D)
Volume done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer12)
Elements contain:
A)
Atoms of different kind. done
clear
B)
Atoms of same kind. done
clear
C)
Molecules of different kind. done
clear
D)
Different patterns of molecules. done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer13)
Which among the following statements is not correct?
A)
In solids, molecules are tightly packed. done
clear
B)
Solids have fixed shape. done
clear
C)
Solids have fixed volume. done
clear
D)
All the above done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer14)
On heating:
A)
Size of matter contracts. done
clear
B)
Size of matter expands. done
clear
C)
Size of matter remains the same. done
clear
D)
Both [a] and [b] done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer15)
Which of the following is an irreversible change?
A)
Baking of food done
clear
B)
Rusting done
clear
C)
Melting of ice-cream done
clear
D)
Both [a] and [b] done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer16)
Which among the following is not an example of solid in water?
A)
Sugar in water. done
clear
B)
Salt in water. done
clear
C)
Alcohol in water. done
clear
D)
Flour in water. done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer17)
Which of the following gases dissolve in water?
A)
Carbon dioxide done
clear
B)
Nitrogen done
clear
C)
Ammonia done
clear
D)
All the above done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer18)
Boiling of water is a:
A)
Chemical change done
clear
B)
Physical change done
clear
C)
Non-renewable change done
clear
D)
Biological change done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer19)
Which among the following is a chemical change?
A)
Chopping of wood. done
clear
B)
Crushing a can. done
clear
C)
Mixing sand and water. done
clear
D)
All the above done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer20)
Which state of matter has fixed shape and volume?
A)
Gas done
clear
B)
Solid done
clear
C)
Liquid done
clear
D)
All the above done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer21)
Match the following:
Column A | Column B |
i. physical change | A. Smallest unit of matter |
ii. Chemical change | B. Smallest unit of water |
iii. Atom | C. Melting of an ice cube |
iv. Molecule | D. Burning a matchstick |
A)
(i - D), (ii - C), (iii - A), (iv - B) done
clear
B)
(i - C), (ii - D), (iii - A), (iv - B) done
clear
C)
(i - D), (ii - A), (iii - B), (iv - C) done
clear
D)
(i - C), (ii - B), (iii - D), (iv - A) done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer22)
Which statement is correct about the gas?
A)
Gas has definite volume but no definite shape. done
clear
B)
Gas has no definite volume and no definite shape. done
clear
C)
Gas has definite shape and volume. done
clear
D)
Gas has definite shape but no definite volume. done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer23)
Which of the following is incorrect about the particles of a matter?
A)
Particles have spaces between them. done
clear
B)
Particles are extremely small. done
clear
C)
Particles attract each other. done
clear
D)
Particles are in stationary state. done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer24)
Rate of evaporation ____ with increase in humidity.
A)
Increases done
clear
B)
Decrease done
clear
C)
Remains the same done
clear
D)
Will not be effected done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer25)
The gas present in pepsi is:
A)
Helium done
clear
B)
Neon done
clear
C)
Carbon dioxide done
clear
D)
Argon done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer26)
When two liquids mix together, they are said to be ____.
A)
Irregular done
clear
B)
Regular done
clear
C)
Miscible done
clear
D)
Immiscible done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer27)
The decrease in the size of matter on cooling is called ____.
A)
Expansion done
clear
B)
Contraction done
clear
C)
Compression done
clear
D)
Complication done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer28)
Compounds are formed by atoms of ______.
A)
Same kind done
clear
B)
Different kind done
clear
C)
Same substances done
clear
D)
Same elements done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer29)
Which statements among the following is correct?
A)
Alcohol is miscible with water. done
clear
B)
Kerosene is immiscible with water. done
clear
C)
oil is immiscible with water done
clear
D)
All the above done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer30)
A change in which new substance is formed is:
A)
Chemical change done
clear
B)
Permanent change done
clear
C)
Irreversible change done
clear
D)
All the above done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer31)
Which of the following has maximum space among the particles?
A)
Solids done
clear
B)
Liquids done
clear
C)
Gases done
clear
D)
Glass done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer32)
Melting of butter is an example of which type of change?
A)
Reversible change done
clear
B)
Physical change done
clear
C)
Irreversible change done
clear
D)
Both [a] and [b] done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer33)
Which of the following is a characteristic of gas?
A)
Only when it is visible by the naked eye. done
clear
B)
It has fixed volume. done
clear
C)
It cannot flow. done
clear
D)
It occupies the available space in the container in which it is poured. done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer34)
Which of the following options is correct for the given statements?
Statement 1: Mixing red and green marbles is a physical change. |
Statement 2: Physical change takes place when a matter changes its state. |
A)
Statement 1 is correct and statement 2 is incorrect. done
clear
B)
Statement 2 is correct and statement 1 is incorrect. done
clear
C)
Both the statements 1 and 2 are correct. done
clear
D)
Either statement 1 or statement 2 is correct. done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer35)
Which of the following is not an example of physical change?
A)
Melting of ice. done
clear
B)
Freezing of water. done
clear
C)
Evaporation of water. done
clear
D)
Making of curd. done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer36)
Stretching of a rubber band is a:
A)
Physical change done
clear
B)
Chemical change done
clear
C)
Irreversible change done
clear
D)
Biological change done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer37)
When baking soda is mixed with vinegar in a bottle and a balloon placed over the top of a bottle gets inflated, then due to which kind of change the balloon gets inflated?
A)
Physical change done
clear
B)
Temporary change done
clear
C)
Reversible change done
clear
D)
Chemical change done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer38)
In which state of matter force of attraction between the molecules is the least?
A)
Liquid done
clear
B)
Solid done
clear
C)
Gas done
clear
D)
Ash done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer39)
If there would be no gaps between the railway track, the track will bend in summers because of:
A)
Contraction of iron. done
clear
B)
Expansion of iron. done
clear
C)
Evaporation of iron. done
clear
D)
Freezing of iron. done
clear
E)
None of these done
clear
View Solution play_arrow
-
question_answer40)
Which among the following statements is not correct?
A)
Chemical change is a temporary change. done
clear
B)
Chemical change is irreversible. done
clear
C)
New substance is formed during a chemical change. done
clear
D)
All the above done
clear
E)
None of these done
clear
View Solution play_arrow