CBSE Questions for Class 9 Chemistry Matter In Our Surroundings Quiz 1 - MCQExams.com

All kinds of matter 
  • occupy space and have definite mass
  • have mass and definite shape
  • can change their states
  • have definite volume
Why does applying spirit give us a cool sensation?
  • Spirit condenses quickly.
  • Spirit evaporates at a slower rate.
  • Spirit evaporates quickly.
  • None of above
The rate of evaporation increases as ____________.
  • the exposed surface area of the liquid increases
  • the exposed surface area of the liquid decreases
  • the movement of air above the surface of the liquid decreases
  • atmospheric pressure increases
The term used for five basic elements was ___________.
  • tritatva
  • panchtatva
  • chaturthtatva
  • dashatatva
The process by which wet clothes dry up is called _____________.
  • evaporation
  • boiling
  • condensation
  • solidification
What happens to the particle of matter when pressure is applied?
  • They move faster
  • They come closer
  • They move freely
  • None of the above
The rate of evaporation depends on __________.
  • surface area
  • temperature
  • humidity
  • all of the above
Water on increasing pressure and decreasing temperature converts into _______________.
  • ice
  • hydrogen and oxygen
  • water vapour
  • None of these
Water, when left uncovered, gets converted into vapour without any external heat due to:
  • evaporation
  • boiling
  • Both A and B
  • None of these
The rate of evaporation is affected by:
(i) Wind
(ii) Temperature
(iii) Area of exposed surface
(iv) Humidity
  • i, ii and iv only
  • i, ii and iv only
  • i, ii and iii only
  • i, ii, iii, iv
Which one of the processes is slow?
  • Evaporation
  • Boiling
  • Both have same rate
  • None of the above
The particles of matter are ______________.
  • large
  • small
  • medium sized
  • None of these
The rate of evaporation is ____________.
  • directly proportional to the temperature of the liquid
  • inversely proportional to the temperature of the liquid
  • independent of the temperature of the liquid
  • directly proportional to the humidity of the surrounding air
When the temperature of solid increases:
  • velocity of particle decreases
  • velocity of particle increases
  • velocity of particle does not change
  • none of the above
The process of water changing into its vapour form is called evaporation.
  • True
  • False
Water on decreasing pressure and increasing temperature converts into:
  • ice
  • water
  • water vapour
  • None of these
Evaporation is a type of vaporization of a liquid that occurs from _________.
  • bottom of a solid
  • bottom of a liquid
  • surface of a gas
  • surface of a liquid

Which of the following is not matter?
  • Chair
  • Dettol
  • Smell
  • Sugar
Matter can exist as  _____________.
  • solid
  • liquid
  • gas
  • A, B or C
_______ is the heat supplied during change of state of matter.
  • Enthalpy
  • Latent heat
  • Endothermic
  • Exothermic
Smoke moves randomly because ______________.
  • moving particles of air collide with smoke
  • smoke does not have kinetic energy
  • both A and B
  • none of above
Two different solutions G and H are poured into beakers of the same size in the figure.
After two days, H becomes lighter than G. Which of the following conclusions are not true?


85277.jpg
  • (i) and (ii) only
  • (i) and (iii) only
  • (ii) and (iii) only
  • (i), (ii) and (iii)
Statement: Shadow is not a matter because it has no mass and does not occupy space.
  • True
  • False
The phenomenon of change of a liquid into the gaseous state at any temperature below its boiling point is called :
  • sublimation
  • evaporation
  • cooling
  • boiling
Which condition out of the following will increase the evaporation of water?
  • Increase in temperature of water
  • Decrease in temperature of water
  • Less exposed surface area of water
  • Adding common salt to water
Statement: Liquids have an indefinite shape and a definite volume.
State whether the given statement is true or false.
  • True
  • False
State whether the given statement is true or false.
The particles of solids are most tightly packed.
  • True
  • False
During summer season, water kept in an earthen pot becomes cool because of the phenomenon of :
  • diffusion
  • transpiration
  • osmosis
  • evaporation
Which of the following are the constituents of matter?

85295.jpg
  • (i) and (ii) only
  • (i) and (iii) only
  • (ii) and (iii) only
  • (i), (ii) and (iii)
Evaporation of a liquid at room temperature leads to _________ on the liquid surface.
  • heating
  • cooling
  • vapours
  • precipitation
0:0:1


Answered Not Answered Not Visited Correct : 0 Incorrect : 0

Practice Class 9 Chemistry Quiz Questions and Answers