Online test of Chapter 1 Matter in our Surrounding 1 Science| Class 9th
Questions :
1. During evaporation, particles of a liquid change to vapours only:
(a) from the surface
(b) from the bulk
(c) from both surface and bulk
(d) neither from surface nor from bulk
2. Which of the following statements is incorrect?
(a) Matter is made up of particles
(b) Matter is continuous in nature
(c) Particles of matter are always in state of motion
(d) Particles of matter attract each other.
3. Which of the following is not a matter?
(a) Air
(b) Feeling of cold
(c) Dust
(d) Humidity
4. Which of the following will not undergo sublimation?
(a) Camphor
(b) Ammonium Chloride
(c) Iodine
(d) Sodium Chloride
5. On increasing the temperature of a gas
(a) its K.E increases
(b) its K.E decreases
(c) its gets converted into liquid
(d) its particles come closer to each other
6. The latent heat of vaporisation of water is
a. 2.26 x 105 J kg-1
b. 22.6 x 105 J kg-1
c. 22.6 x 106 J kg-1
d. 6.22 x 105 J kg-1
7. The interparticle forces are the strongest in:
(a) Ammonia
(b) Ethyl alcohol
(c) Carbon dioxide
(d) Sodium bromide
8. Which one of the following sets of phenomena would increase on raising the temperature?
(a) Diffusion, evaporation, compression of gases
(b) Evaporation, compression of gases, solubility
(c) Evaporation, diffusion, expansion of gases
(d) Evaporation, solubility, diffusion, compression of gases
9. Select the substance which does not undergo sublimation
(a) Common salt
(b) Naphthalene
(c) Ammonium chloride
(d) Camphor
10. A few substances are arranged in the increasing order of forces of attraction between their particles. Which one of the following represents a correct arrangement?
(a) water, air, wind,
(b) oxygen, water, sugar
(c) air, sugar, oil
(d) salt, juice, air
Chapter 1 Matter in our Surroundings Quiz 1| Class 9th
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Question 1 of 10
1. Question
During evaporation, particles of a liquid change to vapours only:
Correct
Evaporation of a liquid takes place from the surface only since evaporation is a surface phenomenon.
Incorrect
Evaporation of a liquid takes place from the surface only since evaporation is a surface phenomenon.
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Question 2 of 10
2. Question
Which of the following statements is incorrect?
Correct
Matter is composed of very small particles called atoms, hence matter is no tcontinuous but particulate in nature.
Incorrect
Matter is composed of very small particles called atoms, hence matter is no tcontinuous but particulate in nature.
-
Question 3 of 10
3. Question
Which of the following is not a matter?
Correct
Matter is anything which occupies space. Feeling of cold is a sensation.
Incorrect
Matter is anything which occupies space. Feeling of cold is a sensation.
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Question 4 of 10
4. Question
Which of the following will not undergo sublimation?
Correct
Sodium Chloride is common salt which does not sublime.
Incorrect
Sodium Chloride is common salt which does not sublime.
-
Question 5 of 10
5. Question
On increasing the temperature of a gas
Correct
Increase in the temperature of gases supplies energy to the particles of gases which in turns increases the Kinetic energy.
Incorrect
Increase in the temperature of gases supplies energy to the particles of gases which in turns increases the Kinetic energy.
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Question 6 of 10
6. Question
The latent heat of vaporisation of water is
Correct
Incorrect
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Question 7 of 10
7. Question
The interparticle forces are the strongest in:
Correct
Sodium bromide is a crystalline solid and interparticle forces are the strongest.
Incorrect
Sodium bromide is a crystalline solid and interparticle forces are the strongest.
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Question 8 of 10
8. Question
Which one of the following sets of phenomena would increase on raising the temperature?
Correct
On raising the temperature, random motion of the particles of matter increases. Thus, the rate of evaporation, diffusion and expansion of gases increases.
Incorrect
On raising the temperature, random motion of the particles of matter increases. Thus, the rate of evaporation, diffusion and expansion of gases increases.
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Question 9 of 10
9. Question
Select the substance which does not undergo sublimation
Correct
Common salt doesn’t sublime.
Incorrect
Common salt doesn’t sublime.
-
Question 10 of 10
10. Question
A few substances are arranged in the increasing order of forces of attraction between their particles. Which one of the following represents a correct arrangement?
Correct
Gases have least attraction between the particles and solids have maximum attraction between the particles. Oxygen is gas, Water is liquid and Sugar is solid.
Incorrect
Gases have least attraction between the particles and solids have maximum attraction between the particles. Oxygen is gas, Water is liquid and Sugar is solid.