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ae ee ee ae, The rag removal of components of a mixture is called separation. solid- solid mixtures can be separated by hand picking magnetic separation. © € sieving, sublimation, winnowing, threshing and | © insoluble solid-liquid mixtures can be separated by sedimentation and decantation, loading and filtration. soluble liquid-liquid mixtures can be separated by evaporation, condensation and distillation. a Two immiscible liquids can be separated by using a separating funnel. in some cases more than one method is required to separate the components of the mixture. The substance that is dissolved is called solute and the substance in which solute is dissolved is called solvent and the resulting mixture is called solution. the maximum amount of solute that can be dissolved in 100g of the solvent at any specified temperature is 4 called solubility. L solubility of most substances increases with increase in temperature. COE OME OREO) © 2 Question Session © y(( Based on NEP 2020 | eceuiaie Fini @ ee Oars fy nl Bea Se sin a. TICK (/) THE CORRECT OPTION 1, The components of a mixture are separated : (a) to remove undesirable components r : (b) to obtain pure substance (c) to remove harmful components i : (d) all of these = 2, Oil and. water can be separated through : (a) sedimentation a. Oe ke ’ (b) evaporation (c) . separating funnel oie ca : (d): - decantation 3. Achemical-that helps in loading is: _ (a) sand es ae ia salt . e () alum Oo sugar ge 4. Amixture of sand and common salt in wate can be separated by : (a) sedimentation | 3 ~~ (b) filtration (c) evaporation om. (d) sedimentation and evaporation EG) sores a ids? ; Je solids? i te insolub i i hods is used to separa 5, Which of the following met filtration (a) sublimation (b) sation va (c} distillation : (d) evap 6. Solute and solvent mix together to form a : j t (a) mixture (b) sedimen (c) solution a5 6. FIbb [iN THE BLANKS 1. The eshing is the process of separating grain seeds from stalk. 2. The liquid in which solute dissolves is called Solvent (d) filtrate : f wind. 3. _winno sing is a method of separating grains from the husk with the help o aoe i icals suc 4. The process by which the rate of sedimentation is improved by adding chemica he alum is called ouding . Solubility Incxea se with increase in temperature WRITE “T’ FOR TRUE AND ‘F’ FOR FALSE STATEMENTS 1. All mixtures are heterogeneous. 5, Ge 2. Solubility decreases with increase in temperature 3. A mixture of milk and water can be separated by filtration 4. A pure substance has definite composition and properties 5. Decantation always follows sedimentation D. MATCH THE TWO COLUMNS Column A Column B € 1. pure substance a. _ uniform sized holes D 2. mixture b. oiland water 4 4 3. seive c. distillation 5 3 4. insoluble components d. impure substance 2 ¢ 5. evaporation and condensation e. element 4 + WRITE ONE WORD FOR THE FOLLOWING 1. Making settling of finer particles faster with alum 2. The substance soluble in water Solute 3. Method used to Separate chaff from the Loading olves olvent 5. The process of pouring out the clear upper i without disturbing the sediment 3 grains with Ms help of wind = wyinnowin ig my Learning Based Decan {in ok Solubility -7 The - moximum | amount of Solute “hat (on be dissolved 100 9 ot the SolVerd ar any Specified tempenntone - is called Solubility ——, _ : PAGE NO. © ; PiU] Ansthe *- _ G. Shout _answex Type _questinn i List — thube probersties of _ rikunes Ans f= Sea Wathen 19 d mix tune of many gases _, wales and Tange number of Sails and othen _imbunities Q => din--igp intone of mahy gasses . wathey -Vaay1ts-— and dust ea eaves G2» A Cup of _4ea_Contains _wathen 1 Sugan 1 mill and _ Juice cof fon Ne nyos | 2, Explain \inowing 4 This method _is gency used by Fatmens to Seana te husk and thew fob guain__af len harvesting with The help of wind This method is based _on_the bxopenty that qiains_are_ heavinen than __husk__and they 3) Enblain 1 — rag tial = As the name ” Suggests ; magne ic Sebation ig the mm hod __|_of Sebonation a magneti¢. _ Substance Fuom a hon — magnetic Substance using a mag her . Jxon___nieke! — ; & ° Solubili Cat 5%) | ee | Sobstane . Gy bor wathey . | | Sugax | MOF 0 : Ammonium cllovide? 94 4 . Common Sat =f 96 | x | Copper Sulphate 93 Long co =f ee = H. Long Ansuien ye ytstin mo anil ingi . i: Diffenentatete hetueen thee lowing . W luse Substance aid = mixture, ans ~ Puse Substance => we. pune Substance Consists of paxticalse of Dhly one Hide ind . fox es all elemenis cai Chemical. Compounds ee Subatante . Mit fii Biline — os ! (i The © Composition of boxe Substan ce in the Same. _Aranghit | Mixtune => Mixtune Sonsists ch {wo on mone ty pes, Of pauticless __afor exambte Suqen VU and __wathea _. _ Suqer vy Solution is a ran tune of Ci mixtuxe has no as boiling boint __tnelting vi Linite point _, hy sical. Such density _pnopenties etc mix foe _mitune . iy Homogeneotis and- helen genenovs sete nOgen enous when its yonious _Combonen ane A_mixtune hot cad thnough —_ovk, the: ik tote and each — e “mikhuie.-~ “-ghowis Agilent Eee Solute Nt and wed i FE Leopeied BTS ae i The ths: Substance thet isi is dissolved _ ig Called. Solute and the Subs tance dissolved is Called ih Which Solute ts Solvent, 2_.| Explain the hyocess of filknaHon with the help of ad Filtnation >» the bxo cess which two Substances, an _Insolvble Solid and ca] ay, liquid ane Seb aniated the mlX bone {hough my fil tening device by passing is called Filtnaton ._ is thxeshing ! ¢— Explain the wigs in ahich meshing Smo ohe Aften __hanvesting __the Crops Such as unt and nice, She | guains ave _Sehariated From —_theix | ths . ihn thea nw is hanvested , the shally ome nied Then each guain of Wheat is Seboniated fom the stalks to which ng attached So that Con he qnounded into” oun the method of Sebawiating gnains — Fiigm the harvested Stall is__calfed" threshing _, “% “ a ¢ iy ie iy \ _| How ame fio: immiseible_ Avis. Sebanated in Explain it With a dia gual on Pb a 4 Separation of immiscible liquids _Sepavating Funnel ia Two immiscible liquids Can be Sebanaloh funnel by-. talking adventage of _thein _unequel_ density Oil and } x 2 v 7 water awe immiscible Niguids _. They Con _hhe__Sepanuted by pstng 4 Sepnating fonney The __milune of imnic cibed Vaud ic _pouned into a _Sthanaing fonny fixed bh a Stand the miytune is left unisnbed fon Some time. The heavien —_ Ii vid (Cwoten) Settles at the hottom. The _StococK“1$_Opened_ and Yhe qui at thes _ lower (yen is_Gallected . As _Sosh_as Hie ligudS _Collecled __te_sinhenck__is clnsed_» the hext __ligiud _is Collected th __ other yep de), —___—— SS pn ) ~— 4 * ane ee ‘ . 7 = : oe ie, ee . : = on Lead aS ~ ia ~ -_- _— “e. : a = ° : = “ x = : = =a = - a mega me | = - ; . 7 ; ( - re! = | i wigs, oe 4 . - a = 6 ae * 
