6th Class Science Separation of Substances Question Bank

done Sepration and Substances Total Questions - 109

• question_answer1)
  Which of the following processes is used tore move stone from wheat?
  A)
  Threshing         done clear
  B)
  Winnowing done clear
  C)
  Hand picking               done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer2)
  Which method will be used to remove tea leaves from brew?
  A)
  Hand picking   done clear
  B)
           Filtration done clear
  C)
  Threshing         done clear
  D)
  Any of these done clear
  View Solution play_arrow

• question_answer3)
  Which method is used to separate heavier and lighter components in a mixture by wind?
  A)
  Hand picking   done clear
  B)
           Threshing done clear
  C)
  Winnowing     done clear
  D)
  Sieving done clear
  View Solution play_arrow

• question_answer4)
  The process that we use to separate grain from stalks is_______
  A)
  hand picking    done clear
  B)
           threshing done clear
  C)
  winnowing                   done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer5)
  The machine used for carrying out the process of threshing is called
  A)
  strainer done clear
  B)
           ladle done clear
  C)
  thresher            done clear
  D)
           None of these done clear
  View Solution play_arrow

• question_answer6)
  In winnowing the components of a mixture are separated by
  A)
  blowing air     done clear
  B)
           water done clear
  C)
  Both the above            done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer7)
  Winnowing is the commonly used method to separate lighter husk particles from heavier seeds of grains. When farmers use this method the heap near the platform for winnowing will be of
  A)
  husk done clear
  B)
  seeds of grain done clear
  C)
  mixture of husk particles and seeds of grains done clear
  D)
  can't predict done clear
  View Solution play_arrow

• question_answer8)
  Which of the following is commonly used to separate bran present in flour?
  A)
  Hand picking   done clear
  B)
           Winnowing done clear
  C)
  Sieving             done clear
  D)
  Any of these done clear
  View Solution play_arrow

• question_answer9)
  Which one is used to separate a mixture of oil and water?
  A)
  Sieving             done clear
  B)
           Decantation done clear
  C)
  Filtration          done clear
  D)
  Evaporation done clear
  View Solution play_arrow

• question_answer10)
  Which method would you use to separate soil from muddy water (i.e. soil suspended in water)
  A)
  Sedimentation done clear
  B)
           Decantation done clear
  C)
  Evaporation done clear
  D)
  Both sedimentation and decantation done clear
  View Solution play_arrow

• question_answer11)
  Which of the following is not used in filtration?
  A)
  Filter paper      done clear
  B)
           Filter funnel done clear
  C)
  Thresher                      done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer12)
  Which process is used to remove pulp from juice before drinking?
  A)
  Hand picking   done clear
  B)
           Sedimentation done clear
  C)
  Decantation                 done clear
  D)
  Filtration done clear
  View Solution play_arrow

• question_answer13)
  To get paneer, we add lemon drops to boiling milk. We can see solid paneer particles being formed. paneer is then separated by using
  A)
  strainer done clear
  B)
           alum done clear
  C)
  stirrer               done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer14)
  Which method would you use to separate the components of salt solution.
  A)
  Decantation     done clear
  B)
           Filtration done clear
  C)
  Evaporation     done clear
  D)
  Sublimation done clear
  View Solution play_arrow

• question_answer15)
  Which process is used for separation of cream from milk
  A)
  Filtration       done clear
  B)
           Threshing done clear
  C)
  Hand-picking               done clear
  D)
  Churning done clear
  View Solution play_arrow

• question_answer16)
  Salt is obtained from sea water by which process?
  A)
  Evaporation  done clear
  B)
           Filtration done clear
  C)
  Decantation                 done clear
  D)
  Condensation done clear
  View Solution play_arrow

• question_answer17)
  If boiled milk is allowed to cool for sometime and is then poured on a piece of cloth, we find that cream (malai) is left behind on cloth. This process of separating cream from milk is
  A)
  nitration           done clear
  B)
  decantation done clear
  C)
  sedimentation  done clear
  D)
  churning done clear
  View Solution play_arrow

• question_answer18)
  Generally the dirt particles are separated from pulses before cooking. For this the pulse is generally washed with water. Allowed to stand for some time and then the water is removed. It is an example of which process?
  A)
  Condensation   done clear
  B)
           Filtration done clear
  C)
  Threshing      done clear
  D)
           Decantation done clear
  View Solution play_arrow

• question_answer19)
  If muddy water taken from a pond is allowed tost and undisturbed for some time we find that the dirt particles present in muddy water get settled at the bottom of container. This process will be called
  A)
  sedimentation done clear
  B)
           decantation done clear
  C)
  nitration                       done clear
  D)
  evaporation done clear
  View Solution play_arrow

• question_answer20)
  Saturated solution is
  A)
  a solution which can dissolve more of a solute at a given temperature done clear
  B)
  a solution which cannot dissolve more of solute at a given temperature done clear
  C)
  a solution which can dissolve solute at a lower temperature done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer21)
  A covered glass jar containing a wet piece of cotton is placed in sunlight for an hour. Tiny droplets of water are noticed sticking to the upper inner surface of glass jar. This is due to
  A)
  evaporation     done clear
  B)
  condensation done clear
  C)
  transpiration    done clear
  D)
  both (a) and (b) done clear
  View Solution play_arrow

• question_answer22)
  A process in which the impure sample is first heated in order to vapourise the liquid and then these vapours of liquid are made to cool to give pure liquid. The complete process is called
  A)
  condensation done clear
  B)
           distillation done clear
  C)
  sublimation                  done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer23)
  Which of the following process can be considered as reverse of condensation?
  A)
  Evaporation    done clear
  B)
           Vaporization done clear
  C)
  Boiling                         done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer24)
  Find the odd one out                        
  A)
  Plugging done clear
  B)
           Hand picking done clear
  C)
  Winnowing     done clear
  D)
  Threshing done clear
  View Solution play_arrow

• question_answer25)
  Choose correct alternative to complete the given analogy. Muddy water: sedimentation: Butter from milk:
  A)
  Filtration        done clear
  B)
           Churning done clear
  C)
  Sublimation                 done clear
  D)
  Evaporation done clear
  View Solution play_arrow

• question_answer26)
  Which method is used to get pure solvent from a solution?
  A)
  Distillation       done clear
  B)
  Centrifugation done clear
  C)
  Filtration                      done clear
  D)
  Using alum crystals done clear
  View Solution play_arrow

• question_answer27)
  Why alum is used to purify muddy water?
  A)
  Mud gets dissolved due to alum done clear
  B)
  Mud floats due to alum done clear
  C)
  Mud settles down due to alum done clear
  D)
  Alum kills germs from muddy water done clear
  View Solution play_arrow

• question_answer28)
  Which method will you use to obtain pure alum from its solution?
  A)
  Evaporation     done clear
  B)
           Filtration done clear
  C)
  Sublimation                 done clear
  D)
  Distillation done clear
  View Solution play_arrow

• question_answer29)
  Decantation refers to
  A)
  the process of mechanically transferring a clear liquid without disturbing the settled solid particles. done clear
  B)
  the process of allowing the solid particles to settle at the bottom. done clear
  C)
  a combination of both the above done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer30)
  The process of condensation is one in which
  A)
  the vapours of water are allowed to cool and change into liquid water done clear
  B)
  the vapours of a liquid are allowed to cool and change into liquid state done clear
  C)
  the vapours of a substance are changed directly to solid state done clear
  D)
  liquid is heated to get its vapours. done clear
  View Solution play_arrow

• question_answer31)
  Which property is used in separating a mixture of two solids by winnowing?
  A)
  Difference in odour done clear
  B)
  Difference in weight done clear
  C)
  Difference in size done clear
  D)
  Difference in colour done clear
  View Solution play_arrow

• question_answer32)
  Which of the following statements is false?
  A)
  Tea can be separated from the leaves by filtration. done clear
  B)
  A mixture of salt and sand can be separated by distillation. done clear
  C)
  Winnowing will separate wheat grains from husk and dust. done clear
  D)
  A mixture of sand and salt is partially soluble in water. done clear
  View Solution play_arrow

• question_answer33)
  You can use decantation to separate :
  A)
  two miscible liquids done clear
  B)
  two immiscible liquids done clear
  C)
  two metals in an alloy done clear
  D)
  solid-solid mixture done clear
  View Solution play_arrow

• question_answer34)
  Which of the following is not a separation technique?
  A)
  Churning         done clear
  B)
  Loading done clear
  C)
  Stirring                         done clear
  D)
  Sieving done clear
  View Solution play_arrow

• question_answer35)
  Sedimentation process can be speeded up by loading. Which of the following is used in loading?
  A)
  Common salt   done clear
  B)
           Oxygen done clear
  C)
  Alum                done clear
  D)
           Sugar done clear
  View Solution play_arrow

• question_answer36)
  In a saturated sugar solution more sugar can be dissolved by _______.
  A)
  cooling done clear
  B)
           stirring done clear
  C)
  heating done clear
  D)
           None of these done clear
  View Solution play_arrow

• question_answer37)
  On keeping ice pieces in glass tumbler, lots of water droplets are observed on the surface of the tumbler. This is due to _____.
  A)
  Evaporation     done clear
  B)
           Sedimentation done clear
  C)
  Decantation     done clear
  D)
           Condensation done clear
  View Solution play_arrow

• question_answer38)
  Which method is used in coffee machines to separate ground coffee from the coffee solution?
  A)
  Evaporation                 done clear
  B)
  Condensation done clear
  C)
  Filtration          done clear
  D)
  Distillation done clear
  View Solution play_arrow

• question_answer39)
  A student has been assigned with the task to separate the oil from water. He would go for which of the following separation process?
  A)
  Filtration          done clear
  B)
  Distillation               done clear
  C)
  Decantation     done clear
  D)
  Condensation done clear
  View Solution play_arrow

• question_answer40)
  Evaporation means going from a liquid to a
  A)
  liquid   done clear
  B)
           solid done clear
  C)
  gas                   done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer41)
  Which of the following given natural process is an example of condensation process?
  A)
  Formation of rainbow done clear
  B)
  Formation of clouds done clear
  C)
  Blue colour of sea done clear
  D)
  Formation of salt from sea water done clear
  View Solution play_arrow

• question_answer42)
  If Ram pours the water off after boiling the potatoes, what is this an example of?
  A)
  Evaporation     done clear
  B)
  Handpicking              done clear
  C)
  Threshing         done clear
  D)
  Decantation done clear
  View Solution play_arrow

• question_answer43)
  Which of the following mixtures could not be separated into its components by decanting?           
  A)
  Beans in hot water     done clear
  B)
  Sand in water done clear
  C)
  Oil in water                  done clear
  D)
  Coffee in hot water        done clear
  View Solution play_arrow

• question_answer44)
  Which of the following process is not an example of evaporation process?
  A)
  Drying of clothes done clear
  B)
  Formation of salt from sea water done clear
  C)
  Formation of small droplets at the surface of a bottle containing ice cold water. done clear
  D)
  drying of wet hairs done clear
  View Solution play_arrow

• question_answer45)
  DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns.

  Column-I	Column-II
  A. The process of removal of larger particles from smaller ones.	(p) Decantation
  B. The process of separation of butter from milk	(q) Filtration
  C. The process of separation of components of a        muddy water	(r) Churning
  D. The process of separation of components of a mixture of oil and water	(s) Sieving

  A)
  \[A\to (p),B\to (q),C\to (r),D\to (s)\] done clear
  B)
  \[A\to (s),B\to (r),C\to (q),D\to (p)\] done clear
  C)
  \[A\to (r),B\to (s),C\to (p),D\to (s)\] done clear
  D)
  \[A\to (q),B\to (s),C\to (p),D\to (r)\] done clear
  View Solution play_arrow

• question_answer46)
  DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns.

  Column-I	Column-II
  A. The process involved when a heavier con in a mixture settles after water is added to it	(p) Condensation
  B. The process whereby the liquid layer above the settled heavier component is removed	(q) Evaporation
  C. The process in which the liquids get converted to gases (vapours) on heating.	(r) Sedimentation
  D. The process in which gases (vapours) get converted to liquids on cooling	(s) Decantation

  A)
  \[A\to (r),B\to (s),C\to (q),D\to (p)\] done clear
  B)
  \[A\to (q),B\to (r),C\to (p),D\to (q)\] done clear
  C)
  \[A\to (p),B\to (q),C\to (r),D\to (s)\] done clear
  D)
   \[A\to (s),B\to (r),C\to (q),D\to (p)\] done clear
  View Solution play_arrow

• question_answer47)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 You are provided with a thoroughly grinded mixture consisting of dry sand and powdered dry leaves. You are asked to separate the components of this mixture either by using the process of winnowing or by any other process. Which other process would you use to separate the components of this mixture?
  A)
  Threshing         done clear
  B)
  Hand picking done clear
  C)
  Filtration          done clear
  D)
           None of these done clear
  View Solution play_arrow

• question_answer48)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 You are provided with a thoroughly grinded mixture consisting of dry sand and powdered dry leaves. You are asked to separate the components of this mixture either by using the process of winnowing or by any other process. Winnowing is based on which property of component of a mixture?
  A)
  Difference in size         done clear
  B)
  Difference in weight done clear
  C)
  Difference in shape done clear
  D)
  Difference in colour done clear
  View Solution play_arrow

• question_answer49)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 You are provided with a thoroughly grinded mixture consisting of dry sand and powdered dry leaves. You are asked to separate the components of this mixture either by using the process of winnowing or by any other process. Which component of the mixture will fall near the platform used for winnowing?
  A)
  Sand                done clear
  B)
           Dried leaves done clear
  C)
  Both of these   done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer50)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 You are asked to add two spoons of solid salt to some liquid water taken in a beaker. On stirring it you find that whole of the salt has disappeared and only liquid can be seen in beaker. After stirring the salt completely disappears and you can see only liquid in the beaker. The liquid in beaker is
  A)
  water               done clear
  B)
  solution done clear
  C)
  solute               done clear
  D)
  solvent done clear
  View Solution play_arrow

• question_answer51)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 You are asked to add two spoons of solid salt to some liquid water taken in a beaker. On stirring it you find that whole of the salt has disappeared and only liquid can be seen in beaker. Which of the following processes will be useful to get salt from this solution?
  A)
  Condensation  done clear
  B)
          Evaporation done clear
  C)
  Filtration          done clear
  D)
           Sedimentation done clear
  View Solution play_arrow

• question_answer52)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 You are asked to add two spoons of solid salt to some liquid water taken in a beaker. On stirring it you find that whole of the salt has disappeared and only liquid can be seen in beaker. Which process can you use to get liquid water from the water vapours if you collect them in another container?
  A)
  Sedimentation             done clear
  B)
  Condensation done clear
  C)
  Evaporation                 done clear
  D)
  Filtration done clear
  View Solution play_arrow

• question_answer53)
  DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion and the other labelled as "Reason R ". You are to examine these two statements carefully and decide if he Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation if the assertion. Select one of the current options, and given below in each questions. Assertion A: The process of settling of heavier insoluble particles from a suspension of a substance in water known as decantation. Reason R: This process along with sedimentation is used to get clear water from muddy water.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer54)
  DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion and the other labelled as "Reason R ". You are to examine these two statements carefully and decide if he Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation if the assertion. Select one of the current options, and given below in each questions. Assertion A: The process of conversion of liquid water to its vapours by heating the liquids called evaporation. Reason R: The process of conversion of water vapours to liquid by cooling the vapours is called condensation.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer55)
  Directions: Read the following two statements carefully and choose the correct option. (i) A mixture of sand and salt is partly soluble in water. (ii) The process of threshing is used to separate grains from stalks.
  A)
  Statement (i) is correct while statement (ii) is incorrect. done clear
  B)
  Statement (ii) is correct while statement (i) is incorrect. done clear
  C)
  Both statements are correct. done clear
  D)
  Both statements are incorrect. done clear
  View Solution play_arrow

• question_answer56)
  Directions: Read the following two statements carefully and choose the correct option. (i)  If the solid dissolve in liquid, then decantation process can be used to separate them. (ii) Oil and water solution can be separated by decantation.
  A)
  Statement (i) is correct while statement (ii) is incorrect. done clear
  B)
  Statement (ii) is correct while statement (i) is incorrect. done clear
  C)
  Both statements are correct. done clear
  D)
  Both statements are incorrect. done clear
  View Solution play_arrow

• question_answer57)
  Directions: Read the following two statements carefully and choose the correct option. (i)  A solution that is capable of dissolving more of solute at the given temperature is known as saturated solution. (ii) A saturated solution on heating become sun saturated solution.
  A)
  Statement (i) is correct while statement (ii) is incorrect. done clear
  B)
  Statement (ii) is correct while statement (i) is incorrect. done clear
  C)
  Both statements are correct. done clear
  D)
  Both statements are incorrect. done clear
  View Solution play_arrow

• question_answer58)
  The apparatus shown in picture below is used in the process of filtration. Name of this apparatus is
  A)
  separating funnel         done clear
  B)
  conical flask done clear
  C)
  filter funnel                   done clear
  D)
  stirrer done clear
  View Solution play_arrow

• question_answer59)
  The diagram shows which process of separation?
  A)
  Sedimentation             done clear
  B)
  Decantation done clear
  C)
  Filtration          done clear
  D)
  Distillation done clear
  View Solution play_arrow

• question_answer60)
  A solution is given which is prepared by adding sugar crystals to water. The solution as shown in diagram is
  A)
  a saturated solution done clear
  B)
  an unsaturated solution done clear
  C)
  a clear solution done clear
  D)
  a suspension done clear
  View Solution play_arrow

• question_answer61)
  Which two methods of separation are shown in Fig. I and Fig. II?
  A)
  Fig. I\[\to \]Evaporation, Fig II\[\to \]Decantation done clear
  B)
  Fig. I\[\to \]Sedimentation, Fig II\[\to \] Decantation done clear
  C)
  Fig. I\[\to \]Decantation, Fig II\[\to \]Filtration done clear
  D)
  Fig. I\[\to \]Decantation, Fig II\[\to \]Evaporation done clear
  View Solution play_arrow

• question_answer62)
  Mohan collected samples of (i) lemon juice, (ii) vinegar (iii) ink and (iv) ground nut oil in separate container. He added water to each container. In which case would the substance be completely insoluble?
  A)
  In (i) and (ii)    done clear
  B)
                       In (ii) and (iv) done clear
  C)
  In (iv) only     done clear
  D)
  In (i) only done clear
  View Solution play_arrow

• question_answer63)
  On a sunny day a student performed the following experiment. He took 100 ml each of alcohol and water in separate open vessels which hare identical and allowed these to remain in open for 2 hours. After that he found that the amount of alcohol left is much less than that of water. From this we can easily conclude that
  A)
  the rate of evaporation of alcohol is faster than that of water done clear
  B)
  both alcohol and water evaporate at same rate done clear
  C)
  water does not evaporate done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer64)
  Parth is preparing lemonade by adding salt, sugar and ice in lemon juice. For quick preparation, what sequence should be followed?
  A)
  Sugar - Salt ? Ice         done clear
  B)
  Ice-Sugar-Salt done clear
  C)
  Sugar - Ice ? Salt         done clear
  D)
  Salt-Ice-Sugar done clear
  View Solution play_arrow

• question_answer65)
  A separation process that is a combination of evaporation and condensation in which the liquid is first converted to vapour by heating and the vapours of liquid are then cooled to get pure liquid. The process is known as
  A)
  filtration           done clear
  B)
           decantation done clear
  C)
  distillation                    done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer66)
  It is a process of separation which is used to separate heavier particles of a mixture from lighter particles of the mixture. The process is carried out with the help of wind. The process is:
  A)
  threshing          done clear
  B)
           winnowing done clear
  C)
  sedimentation  done clear
  D)
  decantation done clear
  View Solution play_arrow

• question_answer67)
  This process is used where the components of a mixture are of different sizes. This process is used at the construction sites to separate babbles and stones from sand. This process is carried out with the help of
  A)
  sieve    done clear
  B)
  thresher done clear
  C)
  separating funnel         done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer68)
  In an experiment two identical beakers A and B were filled with 50 ml of water. The beaker A was kept in the sun and the beaker 'B' was kept in shade. After a few hours it was found that the quantity of water is not same in both the beakers. Why?
  A)
  The rate of evaporation of solution of beaker 'A' is more than that of 'B' done clear
  B)
  The rate of evaporation of solution beaker 'A' is less than that of 'B' done clear
  C)
  The rate of evaporation is same done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer69)
  Saw dust can be separated from a mixture of saw dust and sugar by the process of filtration because of
  A)
  difference in size of particles of saw dust and sugar done clear
  B)
  difference in solubility of saw dust and sugar in water. done clear
  C)
  difference in density of saw dust and sugar done clear
  D)
  Both (a) and (b) done clear
  View Solution play_arrow

• question_answer70)
  A saturated solution of a substance was obtained by dissolving 8 g of the solute in 100ml of solution. The solubility of this substance is (in g/100ml)
  A)
  2                      done clear
  B)
                      4 done clear
  C)
  6                      done clear
  D)
           8 done clear
  View Solution play_arrow

• question_answer71)
  The weight of dried residue obtained by heating 100 ml of a saturated solution of salt was found to be 7 g. It shows that the solubility of salt in water is (in g/100 ml)
  A)
  7                      done clear
  B)
           5 done clear
  C)
  6                                  done clear
  D)
  can't predict done clear
  View Solution play_arrow

• question_answer72)
  Sugar syrup, usually used to coat sweets is prepared by heating mixture of water and sugar, becomes hard when cooled. From this we can conclude that sugar syrup is:
  A)
  a saturated solution done clear
  B)
  an unsaturated solution done clear
  C)
  not a solution done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer73)
  A few coloured glass pieces that are bigger in size are mixed with sugar. The easiest way to separate them is:
  A)
  heat the mixture done clear
  B)
  add the mixture to water done clear
  C)
  handpick the glass pieces done clear
  D)
  handpick the sugar particles done clear
  View Solution play_arrow

• question_answer74)
  Which of the following processes enable pure water to be obtained from sea water? I. Filtration                   II. Distillation III. Evaporation                        IV. Reverse osmosis
  A)
  I and II only      done clear
  B)
  I and III only done clear
  C)
  II and IV only               done clear
  D)
  III and IV only done clear
  View Solution play_arrow

• question_answer75)
  Which of the following methods is most suitable for obtaining a pure, dry sample of sodium chloride from a mixture of solid sodium chloride and sand?
  A)
  Shake the mixture with water, filter and dry the residue on the filter paper. done clear
  B)
  Shake the mixture with water, filter and evaporate the filtrate. done clear
  C)
  Heat the mixture gently and collect the substance which sublimes. done clear
  D)
  Shake the mixture with water and filter it. done clear
  View Solution play_arrow

• question_answer76)
  John tried to separate sugar from its solution using the evaporation method. However, he was unsuccessful. Which of the following is the likely reason?
  A)
  There was insufficient sugar in the solution. done clear
  B)
  He had forgotten to stir the solution during heating- done clear
  C)
  The sugar had decomposed. done clear
  D)
  The sugar had vaporized. done clear
  View Solution play_arrow

• question_answer77)
  Choose correct alternative to complete the given analogy. Butter from milk: Churning: Salt from sea water :_________
  A)
  Sedimentation done clear
  B)
           Evaporation done clear
  C)
  Winnowing                  done clear
  D)
  Sieving done clear
  View Solution play_arrow

• question_answer78)
  Choose correct sequence of the process used for obtaining salt from sea water?
  A)
  Collection of water \[\to \]evaporation\[\to \]crystallization done clear
  B)
  Collection of water\[\to \]condensation\[\to \]evaporation done clear
  C)
  Collection of water\[\to \]crystallization\[\to \]condensation done clear
  D)
  Collection of water\[\to \]evaporation\[\to \]condensation done clear
  View Solution play_arrow

• question_answer79)
  In filtration, the term filtrate refers to _____.
  A)
  the solid that remains on the filter paper. done clear
  B)
  the liquid that drains through the filter paper done clear
  C)
  the type of filter paper used done clear
  D)
  the mixture before separation done clear
  View Solution play_arrow

• question_answer80)
  I am making lip balm. I have to pour my cooked mixture through some muslin (fabric) cloth. What am I doing to the mixture?
  A)
  Decanting it                 done clear
  B)
  Mixing it done clear
  C)
  Filtering it        done clear
  D)
  Threshing it done clear
  View Solution play_arrow

• question_answer81)
  Which of these are methods of separating a solid from a liquid?
  A)
  sedimentation, decantation and filtration done clear
  B)
  decantation, filtration and evaporation done clear
  C)
  decantation, winnowing, threshing done clear
  D)
  sedimentation, dissolving, condensation done clear
  View Solution play_arrow

• question_answer82)
  Which of these methods could be used to separate an insoluble solid from a soluble solid?
  A)
  Mixing the mixture with water and then filtering it. Then we could evaporate the water from the resulting filtrate. done clear
  B)
  Mixing the mixture with water and then filtering it. Then we could evaporate the sand from the resulting solid. done clear
  C)
  Mixing the mixture with oil and then filtering it. Then we could evaporate the solid out. done clear
  D)
  Both (b) and (c) done clear
  View Solution play_arrow

• question_answer83)
  Which one of the following mixture can be separated by first using handpicking method and then by sedimentation decantation process?
  A)
  A mixture of salt and sugar done clear
  B)
  A mixture of salt and water done clear
  C)
  Rice containing stones and dust done clear
  D)
  Rice containing salt done clear
  View Solution play_arrow

• question_answer84)
  I put dirty water into a funnel with a paper lining. Clean water comes out of the funnel into my beaker and solid dirt gets left behind on the paper. This is an example of_____.
  A)
  Sedimentation done clear
  B)
           Condensation done clear
  C)
  Evaporation     done clear
  D)
           Filtration done clear
  View Solution play_arrow

• question_answer85)
  Separation of Substances   List of different component is given. Identify their method of separation and choose the correct option. (i) Tea leaves from tea (ii) Butter from milk (iii) Sand from water   (iv) Paneer from milk
  A)
  (i), (ii), (iii) and (iv) by filtration done clear
  B)
  (i), (iii) and (iv) by filtration done clear
  C)
  (ii) and (iv) by sedimentation done clear
  D)
  (i), (iii) and (iv) by churning. done clear
  View Solution play_arrow

• question_answer86)
  DIRECTIONS: Match column I with column II and select the correct answer using the code given below the columns.

  Column-I	Column-II
  A. The process by which coffee machines separate ground coffee from the coffee solution	(p) Threshing
  B. The process in which stalks are beaten for separating grain seeds	(q) Condensation
  C. The process due to which clothes are dried in cloth dryer	(r) Filtration
  D. The process due to which cloud formation takes place	(s) Evaporation

  A)
  \[A\to (q),B\to (s),C\to (p),D\to (r)\] done clear
  B)
  \[A\to (r),B\to (p),C\to (s),D\to (q)\] done clear
  C)
  \[A\to (q),B\to (s),C\to (p),D\to (r)\] done clear
  D)
  \[A\to (r),B\to (s),C\to (q),D\to (p)\] done clear
  View Solution play_arrow

• question_answer87)
  DIRECTIONS: Match column I with column II and select the correct answer using the code given below the columns. Meena is preparing a saturated solution of sugar in water by dissolving 50 g sugar in water. On the basis of given information. Find out the correct answer as per the given directions.

  Column I	Column II
  A. She added more of the sugar in solution at the same temperature	(p) Sugar crystals are formed and settle down
  B. She added more of the sugar in solution at high temperature	(q) Solution become unsaturated due to dilution
  C. She allowed the solution to cool	(r) Sugar does not dissolve any more
  D. She added more of the water at the same temperature	(s) Sugar get dissolve in water

  A)
  \[A\to (r),B\to (s),C\to (p),D\to (q)\] done clear
  B)
  \[A\to (r),B\to (p),C\to (q),D\to (s)\] done clear
  C)
  \[A\to (s),B\to (q),C\to (r),D\to (p)\] done clear
  D)
  \[A\to (q),B\to (s),C\to (p),D\to (r)\] done clear
  View Solution play_arrow

• question_answer88)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 Lemonade is prepared by mixing lemon juice an sugar in water. You extracted lemon juice from lemon and used some method to remove solid particles of pulp from it before mixing it with water. Now you add sugar and ice to the above solution before serving it. Which process have you used to remove pulp from lemon juice?
  A)
  decantation      done clear
  B)
           sedimentation done clear
  C)
  filtration                       done clear
  D)
  All of these done clear
  View Solution play_arrow

• question_answer89)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 Lemonade is prepared by mixing lemon juice an sugar in water. You extracted lemon juice from lemon and used some method to remove solid particles of pulp from it before mixing it with water. Now you add sugar and ice to the above solution before serving it. In which case would the lesser amount of sugar be dissolved in it.
  A)
  If we first add ice         done clear
  B)
  If we first add sugar done clear
  C)
  If we use a stirrer done clear
  D)
  Can't predict done clear
  View Solution play_arrow

• question_answer90)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 Lemonade is prepared by mixing lemon juice an sugar in water. You extracted lemon juice from lemon and used some method to remove solid particles of pulp from it before mixing it with water. Now you add sugar and ice to the above solution before serving it. If you allow the lemonade to be left undisturbed and allow it to attain room temperature. Now if you add a little more of sugar to it.
  A)
  will it be dissolved done clear
  B)
  will it remain undissolved done clear
  C)
  the lemonade will not be fit to drink done clear
  D)
  the lemonade will be less sweet than it was previously done clear
  View Solution play_arrow

• question_answer91)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 See the following chart carefully then answer the questions that follows: What could have been the mixture?
  A)
  Water + Sand + Glass done clear
  B)
  Oxygen + Hydrogen + Salt done clear
  C)
  Stones + Rice + Water done clear
  D)
  Sand + Sugar + Water done clear
  View Solution play_arrow

• question_answer92)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 See the following chart carefully then answer the questions that follows: In the above question what could have been the substance Z?
  A)
  Sugar               done clear
  B)
  Sand done clear
  C)
  Glass                           done clear
  D)
  Oil done clear
  View Solution play_arrow

• question_answer93)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 See the following chart carefully then answer the questions that follows: What is Y in the gives flow chart?
  A)
  Sugar               done clear
  B)
           Sand done clear
  C)
  Glass               done clear
  D)
           Oil done clear
  View Solution play_arrow

• question_answer94)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 3 Mohan's Mother bought rice from market. Before cooking rice Mohan and his mother observed that rice contains impurities such as pebbles, husk and chaff in it. Mohan said that he will not eat these rice as it contain various impurities. But his mother told him that before cooking these impurities are removed by different methods. Which method would you suggest to Mohan' smother to remove pebbles from rice?     
  A)
  Filtration       done clear
  B)
           Handpicking done clear
  C)
  Sedimentation done clear
  D)
           None of these done clear
  View Solution play_arrow

• question_answer95)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 3 Mohan's Mother bought rice from market. Before cooking rice Mohan and his mother observed that rice contains impurities such as pebbles, husk and chaff in it. Mohan said that he will not eat these rice as it contain various impurities. But his mother told him that before cooking these impurities are removed by different methods. Which process is used for separation of husk and chaff from rice?
  A)
  Winnowing     done clear
  B)
           Sedimentation done clear
  C)
  Sieving             done clear
  D)
           Both (a) and (b) done clear
  View Solution play_arrow

• question_answer96)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 3 Mohan's Mother bought rice from market. Before cooking rice Mohan and his mother observed that rice contains impurities such as pebbles, husk and chaff in it. Mohan said that he will not eat these rice as it contain various impurities. But his mother told him that before cooking these impurities are removed by different methods. Winnowing method is based on the difference in_____ of the component of the mixture:
  A)
  colour  done clear
  B)
           shape done clear
  C)
  weight  done clear
  D)
           size done clear
  View Solution play_arrow

• question_answer97)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 4 Ram's mother wanted to prepare cottage cheese (paneer) at home. For this she added some drops of lemon to warm milk. Which results in the formation of solid paneer from milk. His mother separated out this solid paneer from liquid portion by using a muslin sloth and kept it for drying. Which of the following process is involved in separation of solid paneer from liquid portion?
  A)
  Filtration       done clear
  B)
           Winnowing done clear
  C)
  Evaporation                 done clear
  D)
  Handpicking done clear
  View Solution play_arrow

• question_answer98)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 4 Ram's mother wanted to prepare cottage cheese (paneer) at home. For this she added some drops of lemon to warm milk. Which results in the formation of solid paneer from milk. His mother separated out this solid paneer from liquid portion by using a muslin sloth and kept it for drying. What is residue and filtrate in case of separation of Paneer?
  A)
  Residue: Paneer, Filtrate-liquid portion done clear
  B)
  Residue: liquid portion. Filtrate ? Paneer done clear
  C)
  Residue : Milk, Filtrate ? Paneer done clear
  D)
  Residue: liquid portion. Filtrate ? Milk done clear
  View Solution play_arrow

• question_answer99)
  DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 4 Ram's mother wanted to prepare cottage cheese (paneer) at home. For this she added some drops of lemon to warm milk. Which results in the formation of solid paneer from milk. His mother separated out this solid paneer from liquid portion by using a muslin sloth and kept it for drying. Filtration method is used to separate the component of a mixture on the basis of difference in their _____.
  A)
  density done clear
  B)
           shape done clear
  C)
  size                  done clear
  D)
  colour done clear
  View Solution play_arrow

• question_answer100)
  DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R ". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: At construction sites the pebbles and such other impurities are removed from sand by the process of sieving. Reason R: In the process of sieving we make use of the difference in size of particles to separate them.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer101)
  DIRECTIONS: The questions in this segment consists of two statements, one labelled as "Assertion A" and the other labelled as "Reason R ". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion A: A saturated solution is that solution which can dissolve any more of solute only on heating. Reason R: If a saturated solution is cooled some of the solute can be seen at the bottom of the container.
  A)
  Both A and R are true and R is the correct explanation of A. done clear
  B)
  Both A and R are true but R is not the correct explanation of A. done clear
  C)
  A is true but R is false. done clear
  D)
  A is false but R is true. done clear
  View Solution play_arrow

• question_answer102)
  DIRECTIONS: Read the following three statements carefully and choose the correct option. (i) The process of evaporation is used to separate tea leaves from prepared tea. (ii) To separate the components of a mixture of salt and sand we use the process of distillation. (iii) The process of winnowing is used to separate wheat grains from husk.
  A)
  Statements (i) and (iii) are incorrect but (ii) is correct. done clear
  B)
  Statements (i) and (ii) are incorrect but (iii) is correct. done clear
  C)
  All statements are correct. done clear
  D)
  All statements are incorrect. done clear
  View Solution play_arrow

• question_answer103)
  DIRECTIONS: Read the following three statements carefully and choose the correct option. (i) Cream is separated from milk by   sedimentation,  (ii) A mixture of milk and water can be separated by filtration.                         (iii) Separation of sugar from sugar solution can be done by filtration,                        
  A)
  Statements (i) and (iii) are incorrect but (ii) is correct. done clear
  B)
  Statements (i) and (ii) are incorrect but (iii) is correct. done clear
  C)
  All statements are correct. done clear
  D)
  All statements are incorrect. done clear
  View Solution play_arrow

• question_answer104)
  DIRECTIONS: Read the following three statements carefully and choose the correct option. (i) When heavier components in a mixture settles to the bottom after water is added to it, the process is called sedimentation.           (ii) The process of mechanically transferring clear liquid without disturbing the settled solid is called decantation.                      (iii) Sedimentation and decantation is used for separating two immiscible liquids.   
  A)
  Statements (i) and (iii) are incorrect but (ii) is correct. done clear
  B)
  Statements (i) and (ii) are incorrect but (iii) is correct. done clear
  C)
  All statements are correct. done clear
  D)
  All statements are incorrect. done clear
  View Solution play_arrow

• question_answer105)
  In which of the following cases drying of handkerchief will be at faster rate?
  A)
  Only A done clear
  B)
           Only B done clear
  C)
  A and B both    done clear
  D)
           Can't predicted done clear
  View Solution play_arrow

• question_answer106)
  The figure shows the process of filtration. In it X and Y are respectively
  A)
  Residue and filtrate done clear
  B)
  Mixture and filtrate done clear
  C)
  Residue and solution done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer107)
  The figure below shows a container containing saturated solution. If to this beaker we add some more of solvent the solute crystals present at the bottom get dissolved. This is because of
  A)
  increase in solubility of the solute done clear
  B)
  decrease in solubility of the solute done clear
  C)
  increase in volume of solvent done clear
  D)
  None of the above done clear
  View Solution play_arrow

• question_answer108)
  Kapil observed water droplets on the outside of a glass of cold water. The water droplets come from
  A)
  the water vapour in the air done clear
  B)
  the cold glass surface done clear
  C)
  the ice cubes done clear
  D)
  None of these done clear
  View Solution play_arrow

• question_answer109)
  Suresh wants to separate mixture of sand and water for which he used following set up But still he was not able to separate sand and water. Look at the picture given above and find out which important material is missing due to which separation is not occurring?
  A)
  Stirrer              done clear
  B)
  Alum done clear
  C)
  Filter paper      done clear
  D)
           Nothing is missing done clear
  View Solution play_arrow