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CBSE Class X 2011 : SCIENCE

16 pages, 94 questions, 64 questions with responses, 202 total responses,    0    0
CBSE 10
Kendriya Vidyalaya (KV), Kamla Nehru Nagar, Ghaziabad
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I 31/1 Code No. Series RHB I CP1s ;:j. Candidates Roll No. must write the Code on the title page of the answer-book. "DB -;t. qiTamn ep)-g CPT 3m-gf~(f)1 m ~-% 'CR~~I \ Please check that this question paper contains 16 printed pages. Code number given on the right hand side of the question paper should be written on the title page of the answer-book by the candidate. Please check that this question paper contains 41 questions. Please write down the Serial Number of the question before attempting it. I 15 minutes time has been allotted. to read this question paper. The question paper will be distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will read the question paper only and will not write any answer on the answer script during this period. rpr:rr ~ . ~~-q;r rpr:rr ~ ~ ~ CR ~ if ~ ~ CfiT if ~ cH 3ffi ~ ~ fCfi ~ ~--q;r ~ W1&9i1 ~ - -q;r en) ~ 10.15 ~ ~ ~--q;r m?T CR ~ ~ ~ fCfi ~ 3Tclf~ ~ ~ I -a; Cfils ~ if 41 ~ %I ~ % ~ fif.:lz q)f wr:r I fc:<rr 10.15 ~ it 10.30 ~ 'R m~ ~ ~-~ SUMMATIVE CfiT tRt8;lT - ~ .~ (fCf) ft;r@t ~ WRj - -q;r q)f fclwuT ~ I~ 7T<IT ~ ASSESSMENT ~ 'R ~ ~-~F 1Cf11 ~ ~-~ m ~~,. ~ ~ Wm: 15 ~ ~ 16 ~--q;r ~ ~ ~ if 3fR I - II II SCIENCE ~ Time allowed : 3 hours f.:rt:Tfmr 31/1 m:3 Maximum Marks: 31f~*: EfUZ 1 80 80 P.T.D. General Instructions : (i) (ii) (iii) (iv) (v) (vi) The question paper comprises of two sections, A and B. You are to attempt both the sections. All questions are compulsory. There is no overall choice. However, internal choice has been provided in all the three questions of five marks category. Only one option in such questions is to be attempted. All questions of Section A and all questions of Section B are to be attempted separately. Questions number 1 to 4 in Section A are one mark questions. These are to be answered in one word or one sentence. Questions number 5 to 13 in Section A are two mark questions. These are to be answered in about 30 words each. (vii) number 14 to 22 in Section A are three mark questions. to be answered in about 50 words each. number 23 to 25 in Section A are five mark questions. to be answered in about 70 words each. (ix) Questions number 26 to 41 in Section B are multiple choice questions based on practical skills. Each question is a one mark question. You are to select one most appropriate response out of the four provided to you. Questions These are (viii) Questions These are flllIJ"4 ~ (i) : J{R W ~ it m= it (ii) (iii) ~ 9! J{R 31f.:rqp;f kl1T it 3flTTCiiT 'J1T7T 'J1T7T 3T 3f2TCff fffi!: it lJ:C/i 'J1T7T 3T 'J1T7T 3T 'J1T7T 3T (ix) 'J1T7T J{R J{R 31/1 -q ~ 'J1T7T ~ it J{R -q ~ J{R JITCff "#f ~ F m= I 7J7JT ~ I qJ;ff 3flTTCiiT ri Y2fc!f-~ ~ it ~ I ~ J{R dnl: fffisl;f ~ m lJ:C/i I ~ J{R if 22 it J{R ffR- ffR ajq?f it ~ ~ if 25 it J{R qfq-qfq ajq?f it ~ cJ- cJ ajq?f it ~ I ~ ~ "WTo/T I ~ dnl: "WTo/T I ~ dnl: "WTo/T I 14 if&:rT I 23 if&:rT 3i$ TN -q q;J- 'f/7R 1J!Ji 'J1T7T ~ 13 it 5 if if&:rT I 26 if&:rT J{R fcrq;c;q" q it ~ m= it dnl: 1 if 4 it J{R qfq-qfq. ajq?f .it ffR m= item" J{R #trrtt I -q ~ ~ rp:;g -q 3TfTl lJ:C/i-lJ:C/i -q ~ J{R ~ I ~ w:r# ~ ~ 'J1T7T -q ~ it q it 7J7JT -m ~ I CfTCFl[ it 70 ~ 3T 3ft;: I J{R ~ 50-50 ~ (viii) ~ 3T 3ft;: 30-30 ~ (v ii) 'J1T7T J{R W TN q;Jf 'f/7R fffisl;f (vi) rfr ~ dnl: fffisl;f ~ I #trrtt 'f/7R (iv) (v) q;J- lJ:C/i ~ if 41 it J{R >l4JJ/1I4Cfl ~TN ~ ~gmCflflil 3i$ q;r ~ I f0: 7fit rm: mCflc4r -q if .irft:rcit item" lJ:C/i ~ I . 2 SECTION A ~31 1. 2. Draw the structure for ethanoic acid molecule, CH3COOH. ~~ ~ ~, CH3COOH q,1 ~ ~ ~ I Give an example of" a phenomenon where Tyndall effect can be observed. m3. qf{blC:,,1 -q ~ ~~ q;r ~ ~ CF1T ~ ~ 3~1~{OI fcfiBt qrf (ii) fcfiBt ~ 3~1~<ol ~ 1 :mftflrn m~ -q I .-B ~ ~ ~ qf{Cld" ~ ~ ~ ~ ~ ~ -q 12, 19, 21 41fHi 4 ~ -B fi:R;ffi - ~ mer a:ih: -q irnr ~, ? mTt 41f~PFi (~ 38 ~ a:ih: ~ ~ -rnr fcfiBt ~ ~ I~ ~ ~ = 20), cit ~ mqT -q -B ~ ~ CffB a:ih: mq) {lfiI4RCf) ~ TT of the image of an object formed by a 2 ~ Qf(j~k1 q,1 c8t 'qT{ fcdlt'Jdl~ ~ I Draw a ray diagram to show the refraction of light through a glass prism. Mark on it (a) the incident ray, (b) the emergent ray and (c) the angle of deviation. ~ qjfq ~ ~ ~ 1R ~ -rnr >rctlm ~ ~ ~ 2, ? q:<:ff State any four characteristics plane mirror. 2 ? -q -B ~ -q ~ 1 q;r RcflCf){OI CR cm'lICl{OI In the modern periodic table, the element Calcium (atomic number = 20) is surrounded by elements with atomic numbers 12, 19, 21 and 38. Which of these elements has physical and chemical properties resembling those of Calcium and why? 3iT~ 31/1 ~ mqT q,1 B41\JiCf)dl -q -q (i) 8. ~ How does the valency of elements vary (i) in going down a group, and (ii) in going from left to right in a period of the periodic table ? ~ 7. ~ 1 irnr ~ ? ~ fcfi cn'$Cf)"I~Ich'i q;r ~ mr ~,c8t 6. ~ Give an example to illustrate that indiscriminate use of pesticides may result in the degradation of the environment. ~ 5. ~ What is meant by biological magnification ? ~ 4. cit ~ >MlCf 1 cit ~ (Cfi) 3mfrn:r fcfi<ur, (~) 3 ~~ f.1rffi ~ ~ ~ ~.~ 3~ (1]") fcj';:kH 2 I~ CliluT I p.T.a. 9. Expl~in with the help of a diagram, how we are able to observe the sunrise about two minutes before the sun gets above the horizon. ~ ~ ~ ~ ~ fcIi Ql1 >rcl1T\ ~ ~ ~rnil;cJfiRz~m~~~ 10. if ~ il; ~ cn1 CJl fCl -B I List any, four reasons for vegetative propagation being practised in the growth of some type of plants. ' ' 9 >rcl1T\ il; ~ if ~ il; q~ (vegetative) W.f~ ~ il; ~ coW ~ Cfif{UT ~I 11. Describe the role of fallopian tubes in the female reproductive system. 11TGf ~ 12. if q;<11RFH-~3TI List any four disadvantages energy. ~ 13. ('P:f ~ il; fC;m: \jjlql~41 cpr cruR ~ ~ m Ch1cnW ~ ~ ~ Give two examples each of the following : (i) Renewable sources of energy (ii) Non-renewable sources of energy Rkjr~r{Sj(j if it ~ il; fC;m: -ffid (i) ~ il; .,CllCh{Onli (ii) ,14. I of using fossil fuels for the production of il; ~~ Ch1 ~ il; 3i.,cflCh{Onli cJ-cJ 3i;1t;{OI ~ -ffid Write chemical equations for what happens when (i) sodium metal is added to ethanoic acid. (ii) solid sodium carbonate is added to ethanoic acid. (iii) ethanoic acid reacts with a dilute solution of sodium hydroxide. Rkjr~Rsl(j ~. if ~ ~ if ~, ~ fC;m: {IBlliRCh (i) (ii) ~~:w<1 if ern (iii) 31/1 ~~ ~~:w<1 BlfulilOl ~1~ TCR"1I~:S Cf:! ~ il; :w<1 BlrsliJOl ~ cn1 SR1T \J1Tffi ~ B41Ch'(OI ~ I ftlfuliJOl CfiI~T~G SR1T \J1Tffi 4 ': ~ il; ~2i ~ ~ ~ 15. The atomic number of an element'is 16. Predict (i) the number of valence electrons in its atom (ii) its valency (iii) its group number (iv) whether it is a metal or a non-metal (v) the nature of oxide formed by it (vi) the formula of its chloride ~ cnq CflT 'WiTUJ 16 ~ ~ if I~ ~ ~ W1TUJ (iii) ~ crt (iv) "lffi ~ (v) ~ >[ll{f 31TCfBI~'5 Ch1 >ICfFci (vi) ~ CR11{J~'5 CflT ~ ~ - Blil'JjChdl CflT ~ mrrr 31~ ~ cit ~ -rnT ~ ~ ~ ~) 31llJdIChI{ ~ ~ ~ 31R ~ rilf ~ ~ ~~ m1 if ~ I ~ '?rill ~ flli HH 11\ ~ ~ ~ ~ tB ~ ~ ~~ CflT ~ f.:1 ~ ?~ mm~ "ill ~ *i-qlilloS: ~ 3 ~>[q)ffi-~ I . ~ q I{O I fcfi<:rr ~ fq;r ~ 'W;fi'ill ~ flli$il~q: fcfi ~ ~ CflT m 3 J What does HIV stand for? Is AIDS an infectious disease? List any four modes of spreading AIDS. HIV cp:rr ~e, CRffi ~ ? Cf<IT AIDS ~ B~lliCh WI ~ ? AIDS ~ ~. Ch1 q;){ 'ClR fclf~ 3 if ~ What eye defect is myopia ? Describe with a neat diagram how this defect of vision can be corrected by using a suitable lens. RcR: Wt! ~ 31/1 ~ 31rRf 3ih: ~ (<TIB) ~ ~ "&f ~ ~ I ~ ~ fu"Q: ~ fq;r ~ 31R 5lrdfdl~ ~ ~ ~ 5lRifdl~ ~ f.:rfu >[q)ffi ~ 19. 31~ What is the principle of reversibility of light? Show that the incident ray of light is parallel to the emergent ray of light 'Yhen light falls obliquely on a side of a rectangular glass slab. >[q)ffi Ch1 3ffilliOnlJdJ (reversibility) CflT ~ cp:rr ~ ?~ fcfi ~ >[q)ffi ~ fcfBr 18. B~I'JjChdl An object is placed between infinity and the pole of a convex mirror. Draw a ray diagram and also state the position, the relative size and .the nature. of the image formed. ~ 17. ~ ~c'1~T.{j h1 ~ C (i) (ii) 16. if ~ ~ 3 3 I 5 P.T.D. 20. Describe any three ways in which individuals with a particular may increase in population. ~ <fR ~ fclf~ CflT crrR ~ett-m~m~ ~ ~ M fcmcr :rrr (fcl ~l tlCfl) ~ trait 3 oqfu) arq-;ft I 21. State the evidence we have for the origin of life from inanimate matter. ~ ~ ~ ~ QW-'q. ~ ill ~ W1TUT CflT ~ ~ I 22. What are fossils? What do they tell us about the process of evolution? ~lql~!Ol 23. (a) q:<:JT~ ~ mm ~ ?~ ill ~ -B ~ 3 q:<:JT~ ~ 3 ? State two properties of carbon which lead to a very large number of carbon compounds. (b) Why does micelle formation take place when soap is added to water? Why are micelles not formed when soap is added to ethanol? 5 OR Explain isomerism. State any four characteristics the structures of possible isomers of butane, C4HlO. (Cfi) G) -rl-rl 1"J"UTf ~ CflT ~~ ~I ~ ill ~ ("@) it ~ ~ it ~~ ~ ~ '-Tl11"1~ ~ ...:> ~ -B -B 5 it ett ~ ~ ~'(;1"ll ~ 31fu 31f~ . fl:R1r:lT ~ of isomers. Draw ~ ~ ~ fiTm;r m~ <:FIT -;:r@ fiTm;r ~ (micelle) <:FIT ~ ~? ? 3l~ m B!Ollqllqdl ill 24. (a) ett ~ B!Ollqllfcl'4"j ~', 'ett ~ B!Ollqllfcl'4l ~ ett ~ ~ -:qr: fcl~ltldl~ ~ I~ (C4HlO) I What is meant by 'power of a lens' ? (b) State and define the S.l. unit of power of a lens. (c) A convex lens of focal length 25 cm and a concave lens of focal length 10 cm are placed in close contact with each other. Calculate the lens power of this combination. OR 31/1 6 5 (a) Draw a ray diagram to show the formation of image of an object placed between infinity and the optical centre of a concave lens. (b) A concave lens of focal length 15 em forms an image 10 em from the lens. Calculate (i) (ii) (iii) the distance of the object from the lens the magnification for the image formed the nature of the image formed (en) (~ cn1 ~ ("&) ~ cn1 ~ (1]") ~ ~ ("CfICR)' S.l. ~ if; 25 -B CFIT ~ -@ft CfiT if; ~ ~-~ ~ ? ~ ;:rp:r c=r~ -qft~ ~ 3ffi. m:r if; 31fu frrcIiz ~ qRCf)f~d ~ ~ 7p.IT ~ 5 ~ 10 ~ I~ I fi ql;JH -@ft if; ~ if; ~ ~ ~ cnT q,1 ~ cnT I 3l~ (en) ~ ~ ~ if; 5ICf)I~ICf) R 3ffi ~if;~~~m~ ("&) ~ CfiT 5Ifc'1f&tkl ~ I 15 -@ft ~ W~ if; ~ 31rRf CfiT ~ .~ ~ 31tR -B 10 -@ft ~ 1R 5IR"lf&tkl ~ ~I qRCf)f~d ~ ~q,1 ~ (i) ~ -B (ii) mtd" 5IfCif&tkl if; ~ (iii) mtd" 51 f&tkI R1 ~ q,1 ~ 25. With the help of suitable budding in Hydra. diagrams, explain the varIOUS steps of 5 OR What is binary fission in organisms ? With the help of suitable ?iagrams, describe the mode of reproduction in Amoeba. .~ ~ q,1 flQI?1dl -B ~ (Hydra) if; ~ (Cf)(1?1I'iI) if; ~ TRUTf cn1 ~ ~I 5 ' 3l~ ~ if fu-~ if ~ ~ 31/1 (binary fission) CfiT quf.:r ~ fW:rr CFIT ~ ~ ?~ ~ cn1 fltil?1dl -B ~ I 7 p.T.a. SECTION B 'iWT 6f 26. To find the focal length of a concave mirror, Sita should choose which one of the following set-ups ? (A) A mirror holder and a screen holder (B) A screen holder and a scale (C) A mirror holder, a screen holder and a scale (D) A screen, a mirror, holders for them and a scale ~ ~ ~ ~ ett ~ ~ ~ Cfi8. ~ ~ -BRrr R8 ~3TI CfiT -ij ~ ~ QPTT ? m 3fu: W m ~ (A) ~ ~ (B) ~ ~m3fu: . '1~1 (C) ~ ~ (D) ~ W, ~.~, ~ ~ w m, ~ m 3fu: ~ ~ ~ Wm: m 3fu: ~ ~ 27. By using a convex lens, a student obtained a sharp image of his class-room window grill on a screen. In which direction should he move the lens to focus a distant tree instead of the grill ? (A) Towards the screen (B) (C) (D) Away from the screen Very far away from the screen Behind the screen 6W1 "#R1' cpr m ~~ (<fR9T) 5lr(jRl~ ~ ~ (~) ~ Cfi8 (A) ~ ~ ~ ~~ (D) ~ ~ ~ >rRl fcf;<:n" 00 CfiT if 3N2r ~-~ I m; ~ m "#R1 CfiT ~~ (C) ~ 1R 00 ett 3W (B) 31/1 1 ~ -qm ~ 8 C11fi 1R fcIiB fu:w it ~ ~ ~ ~ 1{9 flCfiH ~ 11m cpr ~ cpr I QPTT ? 5lr(jRl~ 1 28. To determine the focal length of a convex lens by obtaining a sharp image of a distant object, the following steps were suggested which are not in proper sequence : I. Hold the lens between the object and the screen. II. Adjust the position of the lens to form a sharp image. III. Select a suitable distant object. IV. Measure the distance between the lens and the screen. The correct sequence of steps to determine the focal length of the lens is (A) III, I, II, IV (B) III, I, IV; II (C) III, IV, II, I (D) I, Ii, III, IV ~ ~t ~t~t"if{UT~~~~~~o1q) ~'Cfif ~ 5{R1~J4 mt(f ~ (~) I. ~ III. ~ IV. ~ am: ~ Ch1 ~ ~ " . ~ ~ ~ Ch1 ~ ~ ~ ~~ ~Ch1~afu:~t~~1 II. ~ Cfif m ~ o1q)~ ~ ~ Cfif ~',~ t~ 5{R1~J4 mt(f ~ I I Ch1'~~ t f.n:lfft1 ~ I fu"Q: Cfif ~ ~ ~ ~ ,(A) 'III, I, II, IV (B) III, I, IV, II (C) III, IV, II, I (D) I, II, III, IV 29. In these diagrams, the angle of refraction r has been correctly marked in which diagram ? I II III (A) I III 1 IV (B) II (C) 31/1 1 (D) IV 9 p.T.a. I II III (A) I (B) II (C) III IV (D) IV 30. For a ray of light passing through a glass slab ,. the lateral displacement was correctly measured as (A) AB (B) PQ (C) ~ -aTCfl CD Ch1 ~ 1 (D) PR ~ 1WR q;r ~ 'B ~ Wfim fcRuT ~ 41{lI11'i ~ ~ fcRuT 41~qCfl ~ ~ ::: (A) (B)PQ (C) 31/1 AB CD (D) PR 10 I" "'1f ~ "CflT 31. Iron nails were dipped in an aqueous solution of copper sulphate. After about 30 minutes, it. was observed that the colour of the solution changed from (A) colourless to light green. (B) blue to light green. (C) blue to colourless. (D) 1 green to blue. W ~ ~ ~~ ?;&r 'TllT it ~ cn1~ MC111<i -q ~ 'TllT I Wfl1T[ 30 fi:Rz mRf, fcn fcrw:R q;r t1T (A) ~"B ~ (B) ~ "B ~ (C) ~ -B ~ (D) ~"B Q\T -;fu;rr 'TllT I m 'TllT I Q\T m m 'TllT I m 'TllT I 32. A cleaned aluminium foil was placed in an aqueous solution of zinc sulphate. When the aluminium foil was taken out of the zinc sulphate solution after 15 minutes, its surface was found to be coated with a silvery grey deposit. From the above observation it can be concluded fu~ (A) aluminium is more r~active than zinc. (B) zinc is more reactive than aluminium. (C) zinc and aluminium both are equally reactive. (D) 1 zinc and aluminium both are non-reactive. Q(jfl1f.111~ ~ . mRf, ~, ~ Q(jfl1f<ill~ ~ ~ ~ it ~ (~) ~ t1T ~ m ~ ~~ it m ~ %f "B GCfiT fcrw:R ~ fcrw:R w;rr 'PlT I~ "B -q mJ ~ 3l q ct1 Cfl<i 'TllT I ~ 'TllT "B ~ m~ 'lftuwr 15 fi:Rz m1 it f.:rcnK;rr ~~~fcn m "B 3lf~ f%lll~nC1 ~ "B 3lf~ f%lll~nC1 ~. I (A) (B) m Q(jfl1f.111~ (C) ~ am (D) 31/1 Q(jfl1f.111~ m amQ(jfl1f.111~ Q(jfl1f.111~ ~ ~ m~ ~ ~ "B I f~lll~nC1 ~I I p.T.a. 11 33. 1 Vapours of acetic acid smell (A) pungent like vinegar. (B) sweet like rose. (C) suffocating like sulphur dioxide. (D) odourless like water. Q4lf2Al ~ (A) ~ ~ ~ ~ mcft (C) ~ ~3"lTCR1I$s ~ (D) ~~~ mm ~ cmm I (B) 34. cn1 qr&1 cnl1"R:T I G:li ~ -qrffi I Acetic acid reacts with solid sodium hydrogen carbonate (A) slowly forming no gas. (B) . vigorously with effervescence. (C) slowly without effervescence. (D) vigorously without gas formation. Q4lR:Cfl ~ om ~R;11~~1$~1\i1'i CflI<li'r~2:~ ~ mt-mt m-r m-r mt-mt m-r-B- '1~1~1~2:~- I ~ 1~~1~2: (A) cfurm ~ -rtB ~ Th:r~I~ I. 31/1 (D) (B) m 12 CO@T ~ 1 35. A student added acetic acid to test tubes I, II, III and IV containing the labelled substances and then brought a burning splinter near the mouth of each test tube. II NaOH III NaGl IV NaHGOg The splinter would be extinguished when brought near the mouth of test tube 1 (A) I (B) II (G) III (D) IV 'i1l""liFcM m~ ~2f 00 ~ 'FIT 3:tR f.:p:;:r tv: ~ ~ I ~~ II NaOH NaGl fcnB QU9'i ctl (A) \ffi1 ~ qU~Hf(14i QBlflCfl I IV Ga(OH)2 NaHGOg fu'icfiT ID\T it ~ it .\ffi1 "ffi"lIT'FIT III 1R .~ ~ ~ ~ ? III (D) ~ IV it ~ II (C) it "$ c t 3:tR I (B) 31/1 em9:'if~ I, II, III IV 13 P.T.O. 1 36. The shape of yeast cell is (A) (B) only spherical. only oval. (C) (D) irregular. both oval and spherical. ~-(~) ~ (A) ~ (B) ~~I (C) ~-~ (D) ~ 3Wfifu m-ffi ~ ~ JTh.'1ICflI\I (3"lf.i<~Md) I 3:ih: JTlc.1ICflI\ ~ I 37. The steps involved in observing a slide under a microscope are given below. They are not in proper sequence. I. II. Focus the object under high power of the microscope. Place the slide on the stage of the microscope. III. Arrange the mirror to reflect maximum light to the slide. IV. Focus the object under low power of the microscope. 1 The proper sequence of steps is (A) II, III, IV, I (B) I, II, III, IV (C) IV, III, II, I (D) III, I, II, IV ~ ~ if ~ q;) ~ I. II. III. ~ ~ fu'@ %, ~ TRITT ~ ~q;)~~mr'R~ IV. ~ q;) ~ GLfuT ~ .qft ~ 'R (iWR) chlCflf~d ~ 9011 .~ ~ ~ I I q;) f.i<1f~d ~ q;) ~ ~ ~ ~ ~ ~ 'R ~ 'R ~~ >rcIim ~ I chlCflfBd ~I ~"itT~~~ (A) (B) I, II, III, IV (C) IV, III, II, I (D) III, I, II, IV . , 1 .. ; t 14 31/1 D"- II, III, IV; I - ... . ~ _ 38. Theillustrate IIIIV .given II Aunoeba in improper binary fission in figures (~ ~~ G]8 The correct order is (1\) (B) (C) (I)) 1 III, IV, II, I IV, III, II, I II, III, IV, I I, III, IV, II ctt Tf{ 3i11lRp"i1 if ~ ~ fu-~ w:r ~ CfiT ~ GJ8~~~ I II 1"fCTI ~ III IV ~w:rQTrrr (1\) (B) (C) (I)) III, IV;II, I IV,III, II, I II, III, IV, I I, III, IV;II 39. I)uring the course of an experiment, 'to determine the percentage of water absorbed by raisins', raisins are weighed (1\) every half an hour. (B) every hour. (C) once - only after completing the experiment. (I)) 1 two times - before soaking and after soaking for three hours. 'fctl!{lfiJ!{1 ~ ~ IDU ~ ~ CfiT -qi ~ >l"fum" ~ ~ CfiB' ~m if ~ ~ ~ ~. ~ ~ (1\) (B) m ~.m~ ~ 3lT~ (C) (I)) 31/1 m ~ ~, ~I 1U m ~ ~ I ~~ 3th: cfR ~ m I (fq) ~ 15 ~ ~ I P.T.D. 40. The colour of raisins as used in the experiment, percentage of water absorbed by raisins' was (A) white (B) yellow (C) dark brown (D) pink TCj)~lf~~1 ~ ~ CflT ~ ~ (D) m CflT ~ cnG' ~ m -ij ~ fctJ~lfiJ~1~ ~ 1fu;rr (C) ~ 1 ~ (B) ~ the mm ~ (A) wr 'to determine ~ ~ \ { 41. Following are the steps iI).volvedin the experiment 'to determine the percentage of water absorbed by raisins'. They are not in proper sequence. r. Soak the raisins in fresh water. II. III. IV. Weigp dry raisins. Weigh soaked raisins. Wipe out soaked raisins. 1 The correct sequence of steps is (A) (B) (C) (D) I, II, II, I, II, I, I, II, III, IV, III, IV, IV III IV III TCfj~lfiJ~1~ .c;Rf wr ~, ~ I. ~ ~ ~ fctJ~lfiJ~1~ ~ sm clq) ~ c;Rf q;) ~ m cnG' CflT ~ ~ I I -qRf ~ ~ II. III. ~ q;) ~ I '4rT. FCfj~lfiJ~1~ c;Rf q;) ~ I IV. '4rT FCfj~lfiJ~1~ c;Rf q;) W I fctJ~lfiJ~1 ~ ~ ~CflT~sm~ (A) (B) (C) (D) 31/1 I, II, III, IV II, I, IV; III II, I, III, IV I, II, IV, III 16 ~ m -ij ~ ~ RlO1if<.'1f{9(1

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