9th Class Science Matter in Our Surroundings Question Bank

done Matter in Our Surroundings Total Questions - 20

• question_answer1)
  A piece of chalk can be broken into small particles by hammering but a piece of iron cannot be broken into smaller particles by hammering. It illustrates that
  A)
   Particles of matter have space in between them done clear
  B)
   Particles of matter possess kinetic energy done clear
  C)
   Particles of matter attract one another done clear
  D)
   All of these. done clear
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• question_answer2)
  Which of the following represents the correct increasing order of the densities of given substances?
  A)
   Cotton < Exhaust from chimneys > Honey < Iron < Air done clear
  B)
  Air < Exhaust from chimneys < Cotton < Honey < Iron done clear
  C)
  Cotton < Air < Exhaust from chimneys < Iron < Honey done clear
  D)
  Air < Cotton < Exhaust from chimneys < Iron < Honey done clear
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• question_answer3)

  Direction: Study the given graph carefully and answer the following question.

  What is the physical state of matter at points 1, 3 and 5 respectively?
  A)
  1-Solid, 3-Liquid, 5-Gas done clear
  B)
  1-Solid, 3-Gas, 5-Liquid done clear
  C)
  1-Liquid, 3-Gas, 5-Solid done clear
  D)
  1-Liquid, 3-Solid, 5-Gas done clear
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• question_answer4)

  Direction: Study the given graph carefully and answer the following question.

  What is represented by straight lines QR and ST in the graph?
  A)
  Temperature remains same during the change of state. done clear
  B)
  OR represents latent heat of fusion, while ST represents latent heat of vaporisation. done clear
  C)
  At QR, matter exists in both solid and liquid states, while at ST matter exists in both liquid and gaseous states. done clear
  D)
  All of these. done clear
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• question_answer5)
  Sneha set up the experiment for melting of ice in a beaker and noted down the temperature throughout the process. What do you think she observed when the ice was melting?
  A)
   The temperature in the thermometer kept increasing till the whole ice melted. done clear
  B)
   Once the melting process started, the temperature in thermometer remained constant though the heating was on. done clear
  C)
   There was no change in temperature throughout the experiment. done clear
  D)
   Ice did not melt on heating. It was converted to vapours. done clear
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• question_answer6)
  Which of the following statements are correct?

  I. Temperature changes during the change of a state.

  II. Dry ice gets converted directly into gaseous state under normal atmospheric conditions.

  III. Higher boiling point of liquid indicates weaker intermolecular forces.

  IV. Latent heat of vaporisation is generally higher than the latent heat of fusion for a substance.

  A)
   I and IV                        done clear
  B)
   II and IV           done clear
  C)
          II and III           done clear
  D)
          III and IV done clear
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• question_answer7)
  Read the given statements and mark the correct option.

  Statement 1: Solid \[\text{C}{{\text{O}}_{\text{2}}}\] changes its state when exposed to air.

  Statement 2: \[\text{C}{{\text{O}}_{\text{2}}}\] undergoes sublimation.

   
  A)
  Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. done clear
  B)
  Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. done clear
  C)
  Statement 1 is true and statement 2 is false. done clear
  D)
  Both statements 1 and 2 are false. done clear
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• question_answer8)
  Match column I with column II and choose the correct option from the codes given below.

  Column I	Column II
  P. Hot tea poured in saucer gets cooled faster.	(i) Evaporation increases with increase in temperature
  Q. We feel more cold after a hot water bath than a cold water bath.	(ii) Evaporation increases with decrease in humidity.
  R. Water is cool in earthen pitcher during dry hot day.	(iii) Evaporation increases with increase in wind speed.
  S. We feel comfortable under a moving fan in summer	(iv) Evaporation increases with increase in surface area.

  A)
    P - (ii), Q - (i), R - (iii), S - (iv) done clear
  B)
    P - (iii), Q - (iv), R - (ii), S - (i) done clear
  C)
    P - (iv), Q - (i), R - (ii), S - (iii) done clear
  D)
    P - (iv), Q - (ii), R - (iii), S - (i) done clear
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• question_answer9)
  Which of the following curves would be obtained on heating solid naphthalene to a temperature which is above its melting point?
  A)
                            done clear
  B)
          done clear
  C)
            done clear
  D)
             done clear
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• question_answer10)
  What is the correct increasing order of molecular motion (kinetic energy) of particles in the following?
  A)
   Brick, water, air, curd done clear
  B)
   Curd, water, air, brick done clear
  C)
   Air, water, curd, brick done clear
  D)
   Brick, curd, water, air done clear
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• question_answer11)

  An organic compound ‘X’ has a melting point of - \[33{}^\circ C\] and a boiling point of \[66{}^\circ C.\]

  The physical states of substance ‘X’ at temperature - \[100{}^\circ C,\] \[0{}^\circ C\] and \[100{}^\circ C\] are respectively

   
  A)
  solid, liquid and liquid done clear
  B)
  liquid, solid and liquid done clear
  C)
  solid, liquid and gas done clear
  D)
  gas, liquid and liquid. done clear
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• question_answer12)

  An experiment is performed as shown in the given figure.

  The conclusion we can draw from the above experiment is that

     
  A)
  Nature of matter is continuous done clear
  B)
  Matter is made up of particles done clear
  C)
  Particles of salt get into the spaces between the particles of water done clear
  D)
  Both (b) and (c). done clear
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• question_answer13)
  Fill in the blanks P, Q, R and S left in the table with appropriate words.

  Properties	Solid	Liquid	Gas
  Inter particle spaces	Very less	Comparatively large	___P___
  Intermolecular Forces	___Q___	Weak	Very weak
  Compressibility	___R___	Very Small	High
  Diffusion	Negligible	___S___	Very Fast

   
  A)

  P	Q	R	S
  Very large	Strong	Negligible	Slow

    done clear
  B)

  P	Q	R	S
  Large	Weak	Small	Fastest

    done clear
  C)

  P	Q	R	S
  Less	Strong	High	Slow

  done clear
  D)

  P	Q	R	S
  Large	Strong	Strong	Fast

  done clear
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• question_answer14)
  Ritwik was given four inflammable substances P, 0, R and S. He was asked to handover them to Ramesh who was the resident of a hot area (temperature, \[46{}^\circ C\]). Ritwik collected the data about the substances as shown in the table. Which substances Ritwik should not carry to the hot area where Ramesh lives?

  Substance	Ignition Temperature
  P	40°C
  Q	38°C
  R	52°C
  S	59°C

   
  A)
  P and Q                       done clear
  B)
  R and S            done clear
  C)
  P and S            done clear
  D)
  P, Q and S done clear
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• question_answer15)
  Choose the correct statements about plasma state.

  I. The state consists of super energetic and super excited particles.

  II. The particles of plasma state are in the form of ionised gases.

  III. The plasma is created on stars.

  IV. Colour of plasma glow depends on temperature of gas only.

  A)
                       I, II and III                    done clear
  B)
   I and II done clear
  C)
   II and III           done clear
  D)
          All of these done clear
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• question_answer16)

  Observe the given figure carefully.

  Which of the following statements is incorrect?

     
  A)
  Processes I, II and III are endothermic while processes IV, V and VI are exothermic. done clear
  B)
  Water vapours formed during process II when come in contact with skin give out \[\text{22}\text{.5}\times \text{1}{{\text{0}}^{5}}\text{ J/kg}\] more heat than the boiling water. done clear
  C)
  Latent heat for process I is \[\text{3}\text{.34 }\!\!\times\!\!\text{ 1}{{\text{0}}^{\text{6}}}\text{ J/kg}\] done clear
  D)
  None of these. done clear
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• question_answer17)
  The given apparatus is used to study the diffusion of a number of gases at the same temperature and pressure.

  Which of the following pairs of gases would diffuse into the vacuum at the same speed?

  [Given: Atomic mass of H=1u, C=12u, N=14u, S=32u, O=16u]

   
  A)
  \[\text{N}{{\text{H}}_{\text{3}}}\] and \[{{\text{H}}_{2}}\]      done clear
  B)
  \[\text{CO}\] and\[\text{S}{{\text{O}}_{2}}\] done clear
  C)
  \[\text{CO}\] and\[{{\text{N}}_{2}}\] done clear
  D)
  \[\text{N}{{\text{H}}_{\text{3}}}\] and \[{{\text{N}}_{\text{2}}}\] done clear
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• question_answer18)

  Diagrams W, X and Y show how the particles of a substance are packed at different temperatures.

  The given graph shows the temperature changes which occur on warming the substance. In which region of the graph would all the particles be packed as in Y?

     
  A)
  I                                  done clear
  B)
  II                     done clear
  C)
  III                    done clear
  D)
  IV done clear
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• question_answer19)

  Observe the given diagram showing change in state carefully.

  Which of the following is correct identification for processes P to U?

     
  A)
  Q\[\to \]Vaporisation, S\[\to \]Liquification, U\[\to \]Solidification done clear
  B)
  P\[\to \]Melting, Q\[\to \]Condensation, S\[\to \]Solidification done clear
  C)
  S\[\to \]Sublimation, P\[\to \]Liquification, U\[\to \]Solidification done clear
  D)
  P\[\to \]Fusion, R\[\to \]Condensation, T and U\[\to \]Sublimation done clear
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• question_answer20)
  Match column I with column II and select the correct option from the codes given below.

  Column I	Column II
  (P) Liquid	(i) Highly compressible
  (Q) Gas	(ii) Definite volume
  (R) Plasma	(iii) Super low density
  (S) Bose-Einstein condensate	(iv) Super energetic

  A)
   (P) - (i), (Q) - (ii), (R) - (iii), (S) - (iv) done clear
  B)
   (P) - (ii), (Q) - (i), (R) - (iii), (S) - (iv) done clear
  C)
   (P) - (ii), (Q) - (i), (R) - (iv), (S) - (iii) done clear
  D)
   (P) - (iii), (Q) - (i), (R) - (ii), (S) - (iv) done clear
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