6th Class Science Sorting Materials into Groups Question Bank

done Sorting and Separation of Materials Total Questions - 20

• question_answer1)
  Which of the following statements is/are correct?                                 

  I. Larger solid particles can be separated from smaller ones by filtration.

  II. Cream can be separated from milk by churning.

  III. A mixture of mud and water can be separated by loading, sedimentation and decantation.

  IV. Grains can be separated from stalks by threshing.

  A)
             I and II only    done clear
  B)
   II and IV only done clear
  C)
   I, II and III only                      done clear
  D)
   II, III and IV only                    done clear
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• question_answer2)
  Which of the following does not represent a characteristic of pure substance?     
  A)
   It has a uniform texture throughout (homogeneous).                   done clear
  B)
   It has a fixed boiling point or melting point.                               done clear
  C)
   It is made up of different types of particles.                          done clear
  D)
   It can be an element or a compound. done clear
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• question_answer3)
  What are the characteristics of metals?
  A)
   Good conductors of electricity and heat', solid at room temperature; transparent shine brightly when polished.        done clear
  B)
   Good conductors of electricity and heat; solid at room temperature; opaque except in extremely thin films; do not shine at all when polished. done clear
  C)
   Bad conductors of electricity and heat; solid at room temperature; opaque except in extremely thin films. done clear
  D)
   Good conductors of electricity and heat; solid at room temperature; opaque except in extremely thin films; shine brightly when polished. done clear
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• question_answer4)
  Select an incorrect reason for separating components of a mixture.
  A)
   To separate two or more different but useful components. done clear
  B)
   To remove undesirable and useless components. done clear
  C)
   To remove pure or harmless components. done clear
  D)
   To obtain pure sample of a substance. done clear
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• question_answer5)
  Match the column I with column II and select the correct option from the codes given below:

  Column I	Column II
  P. A mixture having same composition and properties throughout	(i) Sediment
  Q. A mixture, different parts of which    liquid have different composition and properties	(ii) Supernatant
  R. The solid that settles when a heterogeneous solid-liquid mixture is allowed to stand	(iii) Homogeneous mixture
  S. The liquid above the solid settling from     a heterogeneous solid-liquid mixture	(iv) Heterogeneous mixture

  A)
   P-(ii), Q-(iv), R-(iii), S-(i)           done clear
  B)
   P-(i), Q-(iii), R-(ii), S-(iv)           done clear
  C)
   P-(iii), Q-(iv), R-(i), S-(ii)           done clear
  D)
   P-(iii), Q-(iv), R-(ii), S-(i)           done clear
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• question_answer6)
  Take 10 mL of water in 6 test tubes each and add different samples of substances to each test tube as shown in the given figure. Shake the test tubes vigorously for a couple of seconds and leave them undisturbed. In which of these test tubes, sample substances will remain insoluble in water? 
  A)
  1, 2 and 3      done clear
  B)
  2, 3 and 4       done clear
  C)
  3, 4 and 5      done clear
  D)
  4, 5 and 6 done clear
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• question_answer7)
  Three groups of materials are given below:

  I : Salt, sugar, flour

  II : Copper, gold, silver

  III : Petrol, kerosene, paper

  Identify the property common to each group.
  A)

  	I	II	III
  	Solid	Bad  conductors of heat	Liquid

                  done clear
  B)

  	I	II	III
  	Edible	Non-metallic	Inflammable

                  done clear
  C)

  	I	II	III
  	Edible	Metallic	inflammable Non

  done clear
  D)

  	I	II	III
  	Solid		Inflammable

  done clear
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• question_answer8)
  Match the column I with column II and select the correct option from the codes given:   

  Column I	Column II
  P. Chalk-water	(i) A gaseous mixture mixture
  Q. Glucose solution	(ii) A solid-gas  mixture
  R. Fizzy drink	(iii) A homogeneous solid-liquid mixture
  S. Smoke	(iv) A heterogeneous solid-liquid mixture
  T. Air	(v) Agas-liquid mixture

  A)
   P-(iii),Q-(iv),R-(v), S-(i),T-(ii) done clear
  B)
   P-(v), Q-(iii), R-(iv), S-(ii), T-(i) done clear
  C)
   P-(ii), Q-(i), R-(iv), S-(v), T-(iii) done clear
  D)
   P-(iv), Q-(iii), R-(v), S-(ii), T-(i) done clear
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• question_answer9)
  A few statements about centrifugation method are given:

  I. The mixture containing very small suspended particles is rotated at a high speed in a centrifuge machine.

  II. The denser particles stay at the top.

  III. The method is used to separate water from wet clothes in a washing machine.

  IV. The method can be used in laboratories for separating plasma and platelets.

  The correct statements are
  A)
   I and IV only done clear
  B)
   I, II and III only done clear
  C)
   II, III and IV only done clear
  D)
   I, III and IV only done clear
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• question_answer10)
  Shobha took two liquids (coconut oil and water) in a separating funnel as shown in the figure. What would she observe after some time?
  A)
   Layer 'X is coconut oil, 'Y is water and two distinct layers are formed. done clear
  B)
   Layer 'X is water, 'Y" is coconut oil and two distinct layers are formed.  done clear
  C)
   Layers 'X' and ?Y? are miscible to some extent, hence do not form distinct layers,                             done clear
  D)
   Coconut oil is first collected in the beaker,                           done clear
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• question_answer11)
  Study the given table showing some daily D used items which can be made from more than one material.     

  	Items	Wood	Plastic	Metal	Glass
  (i)	Cooking pot			x	x
  (ii)	Storage container
  (iii)	LPG cylinder			x
  (iv)	Tea cup				x

  Which of these are incorrect?            
  A)
  (i) and (iv)    done clear
  B)
  (i), (iii) and (iv) done clear
  C)
  (i) and (iii)       done clear
  D)
  (ii) and (iii)    done clear
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• question_answer12)

  A science teacher labelled three glass slides as P, 0 and R. She painted slide Q with light blue colour, slide R with black colour and slide P was left as such.

  Then she asked students to put the slide on a white paper having (X) mark on it. Students will be able to see the mark clearly (or partially)

   
  A)
  In slide P as it is translucent        done clear
  B)
  In slide Q as it is translucent       done clear
  C)
  In slide R as it is opaque           done clear
  D)
  In all the slides as paint does not change the nature of glass.         done clear
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• question_answer13)
  Depending upon the nature of the constituents present in a mixture, Suhana, a class 6 student suggested some methods of separation as shown in the table.    

  	Types of mixture	Methods of separation
  1.	Solid - Solid	Handpicking, Sieving
  2.	Solid - Liquid   (insoluble)	Sedimentation Decantation, Filtration
  3.	Liquid - Liquid _(immiscible)	Decantation, Separating funnel
  4.	Solid - Liquid (soluble)	Filtration, Decantation
  5.	Liquid - Liquid  (miscible)	Distillation

  Which of these is/are incorrect method(s) of separation?
  A)
   1 and 2 only                done clear
  B)
   3 only  done clear
  C)
          1 and 5 only    done clear
  D)
          4 only done clear
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• question_answer14)

  Study the given flowchart carefully.

  P, Q and R could be respectively

   
  A)
  Chalk powder, water and sawdust done clear
  B)
  Salt, water and sugar done clear
  C)
  Sugar, water and sawdust done clear
  D)
  Sawdust, water and sugar. done clear
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• question_answer15)
  Four rods of equal length and thickness but of different materials are coated with wax in the same manner. They are fixed to a trough containing hot water. The given diagram illustrates what happens to the wax on each rod after five minutes.

  What can you conclude from the given diagram?

                           

  (i) The aluminium rod conducts heat better than the brass rod.

  (ii) The aluminium rod conducts heat better than the copper rod.

  (iii) The glass rod conducts heat better than the copper rod.

  (iv) The wax on the copper rod melts faster than the wax on the brass rod.

   
  A)
  (i) and (iv) done clear
  B)
  (ii) and (iii) done clear
  C)
  (i), (ii) and (iii) done clear
  D)
  (ii), (iii) and (iv) done clear
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• question_answer16)
  Study the given flowchart and identify the processes P, Q, R and S carried out in the given sequence for separation of the mixture.
  A)

  	P	Q	R	S
  	Sublimation	Magnetic	Filtration	Evaporation

  done clear
  B)

  	P	Q	R	S
  	Magnetic separation	Filtration	Sublimation	Evaporation

  done clear
  C)

  	P	Q	R	S
  	Evaporation	Magnetic separation	Evaporation	Filtration

                  done clear
  D)

  	P	Q	R	S
  	Sublimation	Magnetic separation	Evaporation	Filtration

  done clear
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• question_answer17)
  Properties of three substances X, Y and Z are given below :

  X : Heavy and non-magnetic

  Y : Light and non-magnetic

  Z : Magnetic

  If X, Y and Z are of same size and colour then, which of the following can be used to separate these particles from their mixture?
  A)
  Handpicking followed by filtration done clear
  B)
  Winnowing followed by magnetic separation done clear
  C)
  Magnetic separation followed by sieving done clear
  D)
  Sublimation followed by distillation done clear
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• question_answer18)
  The table below shows the properties of four substances K, L, M and N.

  Substance	Colour	Taste	Magnetic	Dissolves in water
  K	White	Salty	No	Yes
  L	Blue	Sweet	No	No
  M	White	Sweet	Yes	Yes
  N	Black	Metallic	Yes	No

  Which two substances would be most difficult to separate when mixed in water?
  A)
   K and L       done clear
  B)
         K and M          done clear
  C)
          L and M        done clear
  D)
          M and N done clear
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• question_answer19)
  The given flowchart was prepared by Natasha for sorting materials into different groups. She handed over the chart to her teacher with few blanks. Fill in the blanks from the given options.
  A)
   P-Butter, Q-Honey, R-Salt, S-Metal ball, T-Kerosene oil, L/-Pencil     done clear
  B)
   P-Salt, Q-Honey, R-Butter, S-Pencil, T-Kerosene oil, L/-Metal ball     done clear
  C)
   P-Salt, Q-Butter, R-Honey, S-Metal ball, T-Pencil, L/-Kerosene oil     done clear
  D)
   P-Pencil, Q-Honey, R-Butter, S-Salt, T-Kerosene oil, L/-Pencil          done clear
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• question_answer20)
  A brief information about three substances is given :

  X: Transparent, smooth to touch and insulator.

  Y: Yellow in colour, good conductor of heat and electricity, lustrous.

  Z: Man made material, an insulator, used to make switches and handles of cooking utensils.

  X, Y and Z could be respectively
  A)
  Water, copper, aluminium done clear
  B)
  Glass, gold, plastic done clear
  C)
  Paper, aluminium, copper done clear
  D)
  Silver, gold, copper. done clear
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