Download Previous Year question and more Study Guides, Projects, Research Family and Consumer Science in PDF only on Docsity!
———_. ema RU ue [] Series ZIXYW/6 SET ~ 2 . apa 31/6/2 ate were eva als a gether - Wi eg pane g Pg pp FU-Js oe stave fers | Candidates must write the Q.P. Code on the title page of the answer-book. State ete ntence) l o PTT Gis aa fh ga weos Aye gs 31 Z| at 4 Seaa § ofS arr oH sik faq we wes ais wh wane set—gRre Eg 4 * wine | + " + 4 4° SRIas ed & gaye H 39 vas ; 4 4 t ] e SUT SH SI See fore YR el A UES, See-ylRte wer ear Ah oraee BS | * 4 Sa wetva St wey S feTG 15 re ae ea feat me | wea—oa ae fer gate H 10.15 f ¢ 3S fear stem | 10.15 wa 8 10,30 wa aw dee dae wee St aE att ga | rf arate ahr 8 sen gitrar oe SA ger eT | \ ' : * I e Please check that this question paper contains 31 printed pages. : # 4 QP. Code given on the right hand side of the question Paper should be i + written on the title page of the answer-book by the candidate. : ‘ } Please check that this question paper contains 39 questions, c 4 Please write down the serial number of the question in the answer- ; 4 book before attempting it. i * e 165 minute time has been allotted to\ read this question paper. The 4 question paper will be distributed at 10.15 a.m. From 10.15 a.m. to.10.30°4 i a.m., the candidates will read the question paper only and will not write $ t any answer on the answer-book during this period, * d, +: ¢ { 4 * 4 SCIENCE 4 4 Pratt ara : 3 ae afin sis : 80 4m . ie : : Time allowed : 3 hours Maximum Marks : 80 we te on : eee ela gete e gete te a! fan Be e112 B ae Lae P.T.O. saat se : SOTION.. AC al Select and write one most appropriate option out of the four options given for each of the questions 1 - 20. To balance the following chemical equation the values of x and y should respectively be : : : 1 2NaOH + xAl,0, — > yNaAlO, + H,0 (a) 1,4 (ob) 1,2 (c) 2,4 (d) 2,3 A solution turns the colour of turmeric to reddish brown. If the same solution is poured on universal indictor, its colour would change to — 1 (a) violet Neaen (b). blue (c) red ear (d) green The magnetic field inside a long straight current carrying solenoid : 1 (a) is zero. (b) decreases as we niove towards its end. (c) increases as we move towards its end. (d) is same at.all points. Bronze is an alloy of 1 (a) Copper and Zinc (b) Aluminium and Tin ‘(c) Copper, Tin and Zinc _ (a) Copper and. Tin wala ae «5 te : P.T.O. ~~~ ame aa 8. Consider the following chemical saudlon I and II 1 Mg + 2HCl —s MgCl, + Hy Tl. NaOH + HCl —» NaCl + H,O The correct statement about these equations is — (a) ‘Tis a displacement reaction and ‘II’ is a decomposition reaction. (b) ‘T’is a displacement reaction and ‘II’ is double displacement reaction. (c) Both T and ‘II are displacement reactions. (a) Both T and ‘II are double-displacement reactions. 9. Consider the following three flowers namely X, Y and Z. Which flower(s) would develop into a fruit ? I Flower X Flower Y Flower Z (a) ‘X only : (b) ‘Z only (c) ‘X and ‘Y only (d) ‘Y and ‘2’ 10. Two salts ‘X’ and ‘Y are dissolved in water separately. When phenolphthalein is added to these two solutions, the solution ‘ turns pink and the solution ‘Y’ does not show any change in colour, therefore ‘X’ and ‘Y are : ] @&) ie) (a)|Na,CO, | NH,Cl (b) |Na,SO, | NaHCO, () | NH,Cl Na,S0, (a) | NaNO, Na,SO, 31/6/2 9 P.T.O ag ic} tf 11, a In human eye the part which allows light to enter into the eye 18 — (a) Retina (b) Pupil (c) Eye lens (d) Cornea 12. Choose the correct order of the stages of binary fission in Leishmania. ) a) (cus) (I (@@) LU, ULIV,V (b) 1, 1, I, V,IV © LULV,LIV ~ : (a) 1,1, Il, V,IV 13. The phenomena of light involved in the formation of rainbow are (a) Refraction, dispersion and scattering. \ ) Refraction, reflection and dispersion. (©) Refraction, dispersion and internal reflection. (d) Reflection, dispersion and total internal reflection. - ' 14, In an experiment with pea plants, a pure tall plant (TT) is crossed with a pure short plant (tt). The ratio of pure tall plant to pure short plants in F,’ ’ generation will be ; (a) 1:3 bh) 8:1 (ce) 1:1 d) 2:1 : x 31/6/2 ; 11 << : Pp lower than a a int of othanol are d boiling pol 17. Assertion (A) : Melting point am that of sodium chloride. f ionic Reason (R) : The forces of attraction between the molecules compoiinds are very strong. 18. Assertion (A) : An ecosystem consists of biotic components and abiotic components. Reason (R) : Biotic and abiotic components play important roles for the sustenance of life and work independently in all ecosystems. 19, Assertion (A) = It is advised that while diluting an acid one should add water to acid and not acid to water keeping the solution continuously stirred. Reason (R) : The process of dissolving an acid into water is highly exothermic. 20. Assertion (A): Amoeba takes in food using finger like extensions of the cell surface. Reason (R) : In all unicellular organisms, the food is taken in by the entire cell surface. r SECTION - B Q. No. 21 to 26 are Very Short Answer Questions. 21. A metal nitrate ‘A’ on heating gives a metal oxide along with evolution of a brown coloured gas ‘B’ and a colourless gas, which helps in burning. . M . j ire Aunpous solution of ‘A’ when reacted with potassium iodide forms a yellow precipitate. (a) Identify ‘A’ and ‘B’ (b) Name the types of both the reactions involved in the b statement. BpOve ae Me Me 2 _ P.T.O. [OhiO}
