-
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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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B)
add the mixture to water done
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C)
handpick the glass pieces done
clear
D)
handpick the sugar particles done
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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
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B)
I and III only done
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C)
II and IV only done
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D)
III and IV only done
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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
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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
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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
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B)
He had forgotten to stir the solution during heating- done
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C)
The sugar had decomposed. done
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D)
The sugar had vaporized. done
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question_answer77)
Choose correct alternative to complete the given analogy. Butter from milk: Churning: Salt from sea water :_________
A)
Sedimentation done
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B)
Evaporation done
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C)
Winnowing done
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D)
Sieving done
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question_answer78)
Choose correct sequence of the process used for obtaining salt from sea water?
A)
Collection of water \[\to \]evaporation\[\to \]crystallization done
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B)
Collection of water\[\to \]condensation\[\to \]evaporation done
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C)
Collection of water\[\to \]crystallization\[\to \]condensation done
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D)
Collection of water\[\to \]evaporation\[\to \]condensation done
clear
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question_answer79)
In filtration, the term filtrate refers to _____.
A)
the solid that remains on the filter paper. done
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B)
the liquid that drains through the filter paper done
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C)
the type of filter paper used done
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D)
the mixture before separation done
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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
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B)
Mixing it done
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C)
Filtering it done
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D)
Threshing it done
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question_answer81)
Which of these are methods of separating a solid from a liquid?
A)
sedimentation, decantation and filtration done
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B)
decantation, filtration and evaporation done
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C)
decantation, winnowing, threshing done
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D)
sedimentation, dissolving, condensation done
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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
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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
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B)
A mixture of salt and water done
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C)
Rice containing stones and dust done
clear
D)
Rice containing salt done
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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
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B)
Condensation done
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C)
Evaporation done
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D)
Filtration done
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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
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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
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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
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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
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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
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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
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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
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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
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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
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B)
Oxygen + Hydrogen + Salt done
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C)
Stones + Rice + Water done
clear
D)
Sand + Sugar + Water done
clear
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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
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B)
Sand done
clear
C)
Glass done
clear
D)
Oil done
clear
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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
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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
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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
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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
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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
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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
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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
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B)
shape done
clear
C)
size done
clear
D)
colour done
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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
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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
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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
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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
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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
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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
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question_answer106)
The figure shows the process of filtration. In it X and Y are respectively
A)
Residue and filtrate done
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B)
Mixture and filtrate done
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C)
Residue and solution done
clear
D)
None of these done
clear
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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
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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
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B)
the cold glass surface done
clear
C)
the ice cubes done
clear
D)
None of these done
clear
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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
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