10th Science Past Paper PDF, Set 1

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A 3 Makrs (S II -) A 2Marks (S 1-) A 1 Ma krs Gr Total dan ToMakrltsa (V )SA o ^a 5E (K ) lowen Re ged grimbene rq 15% s) H-k (R ) I | E o Un gdnstderain 35% Is) (U ) 3 00 © H-k rq C^ o Ap pli natioc o n d w 26% C/) © o 00 H-k 1 (A ) ^ CD in H H er CD CZ3 O O O c ^S c CD C^ Hi Orrdehg Th gkini (H )OTS 12% 1—k © Sk si l © Evnataliou 12% H-k © (E ) o u - To Marktals 80 (2 ) 6 30 (1 ) 0 100% 5(1 ) 12 ) (4 8(4 ) in H-k  CHEMISTRY PHYSICS 2: o o Chemical Substances- Nature (TQ Natural and Behavior Effect of Current Phenomena (25 Marks) (13 Marks) (12 Marks) ^O CO N3 0 O 6^ 2 ^^ sp o c^ ft rro ^ (JQ P ^ P pr* p ^ a. CO fg ^ ft d P o 7*- it —1 P^f- o' o Cu ^/3 - -9 O o 0 ^ U) 00 so H ^3 ^o 13 U) o to p OO o 00 65  SCIENCE (Theory) CLASS X GROUP - A (Physics & Chemistry) QUESTION ANALYSIS Q.No. Objective Content Sub-Unit Type of Question M; rks R A (ii) U VSA A (iv)^^f U U R (ii) U (iii) VSA lx^ i=5 R (iv) U (v) cT^^ff 0T A R U SA-I 2x^ =12 U E A 9 A 10 A 11 H SA-II 3x6 = 18 12 R 13 E 14 H 15 U ^gj^T fcT^c^TRT 16 u LA 5x2 =10 Tota = 50 GROUP - B (Biology- World of Livings & Natural Resources) R (i) U 17 R (iii) v^c[ VSA lx^ = 5 U (iv) E (v) 18 R mm 19 U SA-I 2x4 20 H 21 H 22 U 23 u SA-II 3x4= 12 24 A 25 E 26 LA 5x1 = 5 Total = 30  (SCIENCE) Set-I 16+10 =26 Total No. of Questions : Total No. of Pages: Time: 3 Hours ] SJ "1 80 Full Marks rks:_J General Instructions: 1. ^ ft Candidates are required to give their answers in their own words as for as practic ible. 2. M^1M^I ^ft^T-A^f^^Btl ^f Tj^^f cf> ^^^ ^f^ff c^ v3r^^ -A (iftfct^t ^ M^Nd)- 50 -B (^ffct %T^ - ^^jftc[ ^^M tTcf qi^^^cf) ^RTI^H) - 30 This question paper has two group A and B. It is compulsory to answ^r all the questions of both the groups. Group ^ A (Physics and Chemistry)- 50 Marks Group - B (Biology - World of Living and Natural Resources) ^ 30 Marks 3. Marks allotted to each question are printed against it. 4. ft ^ I Answer the questions as per instructions given with questions. 5. 3T^T Wf c ^R ft Do all rough work in the last pages of the Question-cum-Answer booklet anc nowhere else. cFPPT 40 ^f ^( 3 3[cfi cft^t Pt^ff cPPPT 50 5 3Tch chef cFPPT 70 Answer in one word or in one sentence the questions of lmark. Answer in about 40 words the question of 2 marks, answer in about 50 words the question of 3 marks and answer in about 70 words the question of 5 marks. vjffr chf[ ft ^^ ^l|c|^i]q> ^ ^ iT ^TFT fen W t? (\3rTC Which mirror is used in the headlight of vehicles? (Answer in one word or n one sentence) ^fcfcTef cRT RT felt cRTJ cR[ ^RTT fer M>R t? zp rjcf> What type of image of an object is always formed by a concave lens (Answer in one word or in one sentence) " W\Q fe cR^J chT ^fcffel fe cj> ^^RT Wi t^ t? On which part of the eye does the human eye form the image of an objec (Answer in one word or in one sentence) lv- fecTRR c^T S.I. ^^Rh W f? ^^R ^ ^^ ~^ ^ cTR^f ^ ^tfe) What is the S.I unit of potential difference? (Answer in one word or in on|e sentence) v- Name one source of direct current. (Answer in one word or in one sentence) 2. 1 Fe + Cm SO4?Fe SO4 + Cm fel ^FRR e^^ ^lftfelT t? Fe + Cm SO4 ^?Fe SO4 + Cm is which type of reaction? (Answer in one word or in one sentence) " fcR^icR x^ cRT RRf^^fcR ^p fclfe I (\3xR t^cR ^1^" zp t^cR zpcfZf ^ ^tfe) Write the chemical formula of Bleaching Powder? (Answer in one word or i one sentence) Write name of main ore of mercury metal. (Answer in one word or in on sentence)  iv- f? (v3xR What is hydrocarbon? (Answer in one word or in one sentence) v- 3^^cJ) c^^ f^^ c^ ^^RR^ ^fxNlRd ^m? (\3xR t^ch ^T^ ^T XTcf> c^Tcf^ ^f Who proposed the law of Octaves? (Answer in one word or in one sentence) t^c[ sra^TT c^ cf) sf^ ^T ^MT 1 Draw a neat ray diagram of an image formed by a concave mirror when the obje ;t in placed between focus and centre of curvature. t? What do you mean by a precipitation reaction? (Answer in maximum words) 5. ^RcT vJh^^^ ^TT 11 (v3xR ^l^^cRi 40 ^Ts^f ^ ^t^fR) What is hypermetropia? Which type of lens is used to correct it? (Answer n maximum 40 words) 6. (40 What are ampho trie oxides? (Answer in maximum 40 words) W^^ 3JTchm cfJT ^^ ^1T ^^iT t, ^ff? (^3xR ^#^P1 40 W^ ^ Why is the color of clear sky blue? (Answer in maximum 40 words) TTcJx^ ^TRo^^ ^TR ^^\ ^ feP^ ^f ^TT ^ 3^^M\ 40 ^f ^j ^f^f^) What were the criteria used by Mendeleev in creating his periodic table? (Answer in maximum 40 words) 7cm v^t Rcf5 cR^ 8cm ^^RFR^ ^ft ^ ^ ^xlcf ^RT ^ 12cm ^t ^\ XR "Re^^ ^ An object of 7cm height is placed at a distance of 12cm from a convex lens of focal length 8cm. Find the position, nature and height of the image. 10. 3ficmlvjH e^^ ^^T ^fT fRT cf> 3^R ^^ ^W Rcf fcR RcF ^jc^l^u] cJJRfj I (^JxR ^ltecR 40  Explain oxidation and reduction in terms of gain or loss of oxygen. Mention example for each one. (Answer in maximum 40 words) 11. ^ ^fe fa 3TPT 6 Q ^^tfaf 4> faf i^^faffa fa faff ^^R fafa^^f cf^^f fa 1+2=3 4M fafaiH 44 414 (i) 18 Q (ii) 2Q ^t I Show how you would connect three resistors each of resistance 6 Q , so that t combination has a resistance of (i) 18 Q (ii) 2Q. (Answer in maximum 50 words) 12. PH #cT ffaff 4>fa t?^fa^f^PH444H6fa4tlfat44^T^Tf ^Tfa 1+2=3 PH 4PT ^f 44T Tffa^^ fan? (\3xR ^^fahcRT 50 t? 1x3=3 (a) ^11 ^T (b) ^T^t (c) ^^Rf (^TcR ^fT^^cT^ 50 What is PH scale? The PH value of fresh milk is 6. What would be the change n 1+2=3 PH after its conversion into curd? (Answer in maximum 50 words) OR Which acid is present in each of the following? 1x3=3 (a) Sour Milk (b) Tamarind (c) Orange (Answer in maximum 50 words 13. cfR 44 W cffa t? ^fT^J 4) 3fTcR^ 4fa ffajcf ^faffa fa ^-farffaf cffaff 1+2=3 ?? (^3xR fafaj^Rf 50 W^^ ^ faft fa^ e^^ cfR ^t fa^cf) fafa ^f fatffacf t| 44T 1x3=3 (i) ^^^eft ^f ?facfT ^fMT t? (ii) ^^^cft t (iii) ^^^ ^ fa^ ^^ ^mn 11 (^^R ^fifahnn 50 ^^^ ^f What is the function of an earth wire? Why is it necessary to earth meta ic 1+2=3 appliances? (Answer in maximum 50 words) (Or) A coil of insulated copper wire is connected to a galvanometer. What wo Id 1x3=3 happen if a bar magnet is (i) Pushed into the coil? (ii) Withdrawn from le coil? (iii) Held stationary inside the coil? (Answer in maximum 50 word: 14. Ml cpZTT t? cj) ^TRT 50 What is a homologous series? Explain with an example. (Answer in maximum 50 words) 15. Mfp^ ^Rh f^ m>^ t? ^^M r1} r2 ^f^rr r3 ^ m ^f 2+3=5 M^ m^\ 3Tf^Rt^r MM MMi ^M ^R I (^tR 3#MMIM 70 c^fT t? Mf^ 70 1+1+3=5 Mr) What is the parallel combination? Derive an expression for equivalent resistan 2+3=5 after combining Ri, R2 and R3 in parallel. (Answer in maximum 70 words) (Or) What is dynamo? Describe its method of working with a diagram. 1+1+3=5 (Answer in maximum 70 words) 16. ^^M MM f^ ^f ^M^ M) fMR eft MTcfMMTT MM MlM f^lMT MMT 11 , , [3 In the given figure of purification of copper in electric decomposition is show Label against , , , and -id - - - [51 a. t? What is hydrogenation? What is its industrial application? b. ^^m> 3p^[ c ^ ^ ^k fcif^ | (^xR 3Tte^^M 70 ^f ^ Mr) Give any three uses of ethanoic acid. (Answer in maximum 70 words) T^T B (vifR f^lM - MR ^FRT ^ ^TTf^^^T^ ^l^M) Group - B (Biology - World of livings and Natural Resources) 17. i. t? (\3rR T^) ^^ ^T ^c^ MTMM Where are villi found? (Answer in one word or in one sentence)  Wj^^i t? crR^[ What is the principal co-ordination centre of body? (Answer in one word or n one sentence) ' W^ eft ^Jef ^IT W t? What is the basic event in reproduction? (Answer in one word or in or sentence) iv- fcTc^RT eft MTT W t? ^^rR ^TT What is the basic incident of evolution? (Answer in one word or in or sentence) v- ^l ^ ^^^T W^K eft ^j^rf ^^ft t? What type of energy is found in wind? (Answer in one word or in or sentence) 18. f? 40 What are the functions of testis in human being? (Answer in maximum 4|0 words) 19. ^^^l" c^^^^ f? (^l^^hxR 40 W^ ^ \3xTC What is a solar cell? (Answer in maximum 40 words) 20. What is a bio-geo-chemical cycle? (Answer in maximum 40 words) 21. ?? ^fij ^prfcRTj[ mm ^ ^^^r mr R^^^^r t? forf^ic^ci^ 40 What is 'khadin'? How is it related to conservation of environment? (Answer i n maximum 40 words) 22. ^RcT c[W ^ ^p-^^H fs^^TT eft Wm$ I (^Ti^^^ 50 Discuss the urine filtration process in human kidney. (Answer in maximum 5|0 words) 23. #^ ^fcfcRft WT ^f 3^x^ ^W cftf^^| |(3l^^cR 50 Mention difference between reflex action and reflex-arc. (Answer in maximum 50 words) 24. 50 Write names and functions of male and female sex-hormones. (Answer n maximum 50 words) 25. ft ^ so How does the creation of verifications in a species promote survival? (Answer n maximum 50 words) OR t? 50 How do Mendel's experiments show that traits may be dominant or recessh e? (Answer in maximum 50 words) 26. 70 Describe with diagram the nutrition in amoeba. (Answer in maximum 70 words) 3^T/ OR vJMltviid el^PT ^f ^IN cf^ ^^ t? 70 What do you mean by acquired characters? Are acquired characters inherit ed? Discuss. (Answer in maximum 70 words)