KENDRIYA VIDYALAYA SANGATHAN( RO JAIPUR)
KENDRIYA VIDYALAYA SANGATHAN( RO JAIPUR)Sample Question Paper -1 (Term-1) 2021-22CLASS:XScience (086)Time :90 MinutesMax Marks: 40General Instructions:1. The Question Paper contains three sections.2. Section A has 24 questions. Attempt any 20 questions.3. Section B has 24 questions. Attempt any 20 questions.4. Section C has 12 questions. Attempt any 10 questions.5. All question carry equal marks .6. There is no negative marking.SECTION :ASection –A contains of 24 questions. Attempt any 20 questions from this section.The first attempted 20 questions would be evaluated.1Which of the following statements about the given reaction are correct?3Fe(s) 4H2O(g) Fe3O4 (s) 4H2 (g)(i) Iron metal is getting oxidized(ii) Water is getting reduced(iii) Water is acting as reducing agent(iv) Water is acting as oxidizing agent2(a) (i), (ii)and (iii)(b) (iii) and(iv)(c) (i), (ii)and (iv)(d) (ii) and(iv)Which of the following are exothermic processes?(i)Reaction of water with quicklime(ii)Dilution of an acids(iii)Evaporation of water(iv)Sublimation of camphor(crystals)(a)(i)and(ii)(b) (ii) and(iii)(c)(i)and(iv)(d) (iii) and(iv)
3Three beakers labelled as A, B and C each containing 25 ml of water were taken. Asmall amount of NaOH,anhydrous CuSO4 and NaCl were added to the beakers A, B andC respectively. It was observed that there was an increase inthe temperature of thesolutions contained in beakers Aand B, whereas in case of beaker C, the temperatureof the solution falls. Which one of the following statement(s) is(are) correct?(i) In beakers A and B, exothermic process has occurred.(ii) In beakers A and B, endothermic process has occurred.(iii) In beaker C exothermic process has occurred.(iv) In beaker C endothermic process has occurred.(a) (i)only(c)(i)and(iv)45(b) (ii)only(d) (ii) and(iii)While performing an activity in the lab, four students added sodium sulphate solution tofour different solutions taken in four different test tubes. In which test tube is a whiteprecipitate observed after the reaction ?(a)(i)(b) (ii)(c)(iii)(d) (iv)Electrolysis of water is a decomposition reaction. The mole ratio ofhydrogen and oxygen gases liberated during electrolysis of water is(a) 1:1 (b) 2:1 (c) 4:1(d)1:26Aluminium is used for making cooking utensils. Which of the following properties ofaluminium are responsible for the same?(i) Good thermal conductivity(ii) Good electrical conductivity(iii) Ductility(iv) High melting point(a) (i) and (ii)(b) (i) and (iii)(c) (ii) and (iii)
(d) (i) and (iv)7While performing an activity in the lab students poured phenolphthalein indicator to fourdifferent solutions taken in four different test tubes. A pink colour is observed in test tubecontaining-(a) HCl8(b)NaOH(c) KCl(d) NaClWhich of the given is used as an antacid?(a) Sodium hydrogen carbonate(b) Calcium hydroxide(c) Magnesium hydroxide(d) All the these9Sodium carbonate is a basic salt because it is a salt of(a) strong acid and strong base(b) weak acid and weak base(c) strong acid and weak base(d) weak acid and strong base10Sodium hydrogencarbonate when added to acetic acid evolves a gas. Which of thefollowing statements are true about the gas evolved?(i) It turns lime water milky(ii) It extinguishes a burning splinter(iii) It dissolves in a solution of sodium hydroxide(iv) It has a pungent odour(a) (i) and (ii)(b) (i), (ii) and (iii)(c) (ii), (iii) and (iv)(d) (i) and (iv)
11Which statement is not correct about stomata?a) Each stoma has a pair of guard cellsb) Stomata help to exchange of gasesc) Stamatas are tiny pores present in the leaved) When water enters the guard cells, stomata closes12The mode of nutrition found in plant is:a) Holozoic nutritionb) Parasitic nutritionc) Saprotrophic nutritiond) Autotrophic nutrition13Glycolysis of respiration takes place in:a) Cytoplasmb) Mitochondriac) Nucleus.d) Mitochondrial matrix.14The correct path of urine in human excretory system is:a) Kidney ureter urethra urinary bladderb) Kidney urinary bladder urethra ureterc) Kidney ureter urinary bladder urethrad) Urinary bladder kidney ureter urethra15The cup-like hollow proximal part of each nephron is known as:a) Loop of Henleb) Bowman’s capsuleC) Collecting ductD) capillary16Autotrophic organism converts of carbon dioxide and water into carbohydrates in thepresence of:(a) carbon dioxide and sunlight(b) chlorophyll and sunlight(c) Carbon dioxide and Nitrogen
(d) Chlorophyll and carbon dioxide17Which one of the following materials cannot be used to make a lens?(a) Water(b) Glass(c) Plastic(d) Clay18No matter how far you stand from a mirror, your image appears erect. The mirror is likelyto be(a) Plane(b) Concave(c) Convex(d) Either plane or convex19The angle between incident ray and reflected ray is 60c. What is the angle of incidence?(a) 30c(b) 40c(c) 60c(d) 50c20A convex lens has a focal length of 10 cm. At what distance from the lens should the objectbe placed so that it forms a real and inverted image 20 cm away from the lens?(a) -20 cm(b) -40 cm(c) -60 cm(d) -80 cm21If an object is placed 10 cm in front of a concave mirror of focal length 20 cm, the imagewill be :(a) Diminished, upright, virtual(b) Enlarged, upright, virtual(c) Diminished, inverted, real(d) Enlarged, upright, real
22A white light falls on a glass prism. The least deviated colour is:a violetb orangec yellowd red23Rainbow is formed due to:a internal reflection and dispersion of light through water dropletb refraction, reflection and dispersion of light through a water dropletc only dispersion of lightd only refraction of light24Length of the day is increased by 4minute dueto(a) Scattering(b) Refraction(c) Total internal reflection(d) Dispersion of light.SECTION :BSection –B contains of 24 questions. Attempt any 20 questions from this section.The first attempted 20 questions would be evaluated.25Which of the following gases can be used for storage of fresh sample of an oil for along time?(a) Carbon dioxide or oxygen(b) Nitrogen or oxygen(c) Carbon dioxide or helium(d) Helium or nitrogen26Which of the following is(are) an endothermic process(es)?(i) Dilution of Sulphuric acid(ii) Sublimation of dry ice(iii) Condensation of water vapours(iv) Evaporation of water(a)(i)and(iii)(b) (ii)only(c)(iii)only
(d) (ii) and(iv)27During the preparation of hydrogen chloride gas on a humid day, the gas is usually passedthrough the guard tube containing calcium chloride. The role of calcium chloride taken inthe guard tube is to(a) Absorb the evolved gas(b) Moisten the gas(c) Absorb moisture from the gas(d) Absorb Cl-ions from the evolved gas28Common salt besides being used in kitchen can also be used as the raw material formaking(i) Washing soda(ii) Bleaching powder(iii) Baking soda(iv) Slaked lime(a) (i) and (ii)(b) (i), (ii) and (iv)(c) (i) and (iii)(d) (i), (iii) and (iv)2930The pH of the gastric juices released during digestion is(a) Less than 7(b) More than 7(c) Equal to 7(d) Equal to 0Which of the following pairs will give displacement reactions?(a) FeSO4 solution and Copper metal(b) AgNO3 solution and Copper metal(c) CuSO4 solution and Silver metal(d) NaCl solution and Copper metalQuestion No. 31 to 34 consist of two statements – Assertion (A) and Reason (R). Answerthese questions selecting the appropriate option given below:A. Both A and R are true and R is the correct explanation of AB. Both A and R are true and R is not the correct explanation of AC. A is true but R is falseD. A is False but R is true31Assertion: After whitewashing the walls, a shiny white colour on walls is obtained after 2to 3 days.Reason: Calcium hydroxide reacts with carbon dioxide to form calcium carbonate whichgives shiny white colour to the walls.
32Assertion:There is no mixing of oxygenated and deoxygenated blood in the human heart .Reason: Valves are present in the heart which allows movement of blood in onedirection only .33Assertion:Small intestine receives the secretion of the liver that digest fats.Reason:Bile juice contains enzymes.34Assertion: Light travels faster in water than air.Reason: Water is denser than air.35Which of the following oxide(s) of iron would be obtained on prolonged reaction of ironwith steam?(a) FeO(b) Fe2O3(c) Fe3O4(d) Fe2O3 and Fe2O36Which of following are not ionic compounds?(i) KCl (ii) HCl (iii) CCl4 (iv) NaCl(a) (i) and (ii)(b) (ii) and (iii)(c) (iii) and (iv)(d) (i) and (iii)373839The electronic configuration of three elements X, Y and Z are as follows:X 2, 4, Y 2, 7, Z 2,1 Which two elements will combine to form an ionic compound andwrite the correct formula,(a) X2Y(b) ZY(c) XZ3(d)Y2ZDuring photosynthesis the food is prepared in leaves, this food gets stored in the form of:a) Glucoseb) Fructosec) Starchd) GlycogenIn case of kidney failure, an artificial kidney can be used for cleaning the blood of a personby separating urea from blood is called:(a) Osmosis(b) Filtration(c) Circulation(d) Dialysis40Complete digestion of food takes place in:(a) Small intestine(b) Large intestine(c) stomach(d) Food pipe
41The enzyme that break down starch intosimpler form is known as:(a) Proteases(b) Lipase(c) Salivary amylase(d) Trypsin42A boy is standing in front of a plane mirror at a distance of 3 m from it. What is thedistance between the boy and his image?(a) 3 m(b) 4.5 m(c) 6 m(d) None of these43The image formed by a concave mirror is real, inverted and of the same size as that of theobject. the position of the object should be :(a) Beyond C(b) Between C and F(c) At C(d) At F44Which type of mirror is used by ENT specialists as a ‘head mirror’?(a) Plane mirror(b) Convex mirror(c) Concave mirror(d) None of these45If a convex lens is used to focus sunlight on a paper, where the paper should be placed sothat it catches fire.(a) At 25 cm away from lens(b) At optical centre of lens(c) At principal focus.(d) At centre of curvature46When a ray of light passes through a glass prism . it suffersa one refractionb two refractionc three refractiond four reflection.
47Water in deep sea is bluish in colour due to:aabsorbtion of light by the seab reflection of sky in waterc scattering of lightd presence of plants in the sea.48Which of the following diagram correctly explain the passage of white light ?SECTION :CSection –Consists of three cases followed by questions. There are a total 12 questions in thissection . Attempt any 10 questions from this section.The first attempted 10 questions would be evaluated.CaseAmoeba is an animal having no fixed shape.It ingests food particles by formation oftemporary finger‐like projections. The food vacoule inside amoeba breaks downthe food into small and soluble molecules.The digested food is thrown out by the amoeba by the rupture of cell membrane andit goes on for the search of next food particle.49How many nuclei an amoeba can have in their cella)150b) 2b) Tailc) Shaped) NeckIn which of the following part ,the digestion of amoeba takes placea)Endoplasm b) Ectoplasm52d) 4The amoeba is unicellular eukaryote that have ability to change itsa) Head51c) 3c) NucleusWhat type of nutrition is followed by amoeba?(a) Parasitic(b) Holozoicd) Food vacuole
(c) Saprotrophic(4) AutotrophicCaseThe relationship between the distance of object from the lens (u), distance of imagefrom the lens (v) and the focal length (f) of the lens is called lens formula. It can bewritten as 1/f 1/v-1/u. The size of image formed by a lens depends on the position ofthe object from the lens. A lens of short focal length has more power whereas a lens oflong focal length has less power. When the lens is convex, the power is positive andfor concave lens, the power is negative.The magnification produced by a lens is the ratio of height of image to the height ofobject as the size of the image relative to the object is given by linear magnification(m). When, m is negative, image formed is real and when m is positive, image formedis virtual. If m 1, size of image is smaller than the object. If m 1, size of image islarger than the object.53An object 4 cm in height is placed at a distance of 10 cm from a convex lens of focallength 20 cm. The position of image isa) 10 cm54b) -10 cmc)20 cmIn the above question, the size of image isa)2 cm55b)4 cmd)8 cmAn object is, placed 50 cm from a concave lens and produces a virtual image at adistance of 10 cm in front of lens. The focal length of lens isa)12 cm56c) 6cmd) -20 cmb) -12.5 cmc) 10 cmd) -10 cmA concave lens of focal length 5 cm, the power of lens isa) 0.2Db)-0.2 Dc) -2Dd) -20DCaseC.It is very interesting to note that our stomach produces hydrochloric acid. It helpsin the digestion of food without harming the stomach. During indigestion the stomachproduces too much acid and this causes pain and irritation. To get rid of this pain,people use bases called antacids. These antacids neutralise the excess acid.Magnesium hydroxide (Milk of magnesia), a mild base, is often used for this purpose.57PH of an acid isa) less than 758c) 7d) zeroAt what pH human body normally worksa) 7 to 7.859b) more than 7b) 8to 9c) 5to 7d) 8 to 8.5Name the chemical reaction which happens when stomach acid reacts with milk ofmagnesia?a) Addition reaction b) Neutralisation reaction c) Displacement reactiond) redox
reaction.60Which of the following is a strong basea) sodium hydroxide b)magnesium Hydroxide c) ammonium Hydroxided)aluminium HydroxideQuestion in lieu of diagram based question for VI - candidate .Total alternate question 03.4Barium chloride on reacting with ammonium sulphate forms barium sulphate andammonium chloride. Which of the following correctly represents the type of the reactioninvolved?(i) Displacement reaction(ii) Precipitation reaction(iii) Combination reaction7(iv) Double displacement reaction(a) (i) only(b) (ii) only(c) (iv) only(d) (ii) and (iv)Which of the following statements is correct about an aqueous solution of an acid and of abase?(i) Higher the pH, stronger the acid(iii) Lower the pH, stronger the base(a) (i) and (iii)(c) (i) and (iv)48(ii) Higher the pH, weaker the acid(iv) Lower the pH, weaker the base(b) (ii) and (iii)(d) (ii) and (iv)What colour we obtain on mixing green and blue light?a Whiteb Blackc Cyand Magenta
KENDRIYA VIDYALAYA SANGATHAN( RO JAIPUR)Sample Question Paper -2 (Term-1) 2021-22CLASS:XScience (086)Time :90 MinutesMax Marks: 40General Instructions:1. The Question Paper contains three sections.2. Section A has 24 questions. Attempt any 20 questions.3. Section B has 24 questions. Attempt any 20 questions.4. Section C has 12 questions. Attempt any 10 questions.5. All question carry equal marks .6. There is no negative marking.SECTION –ASection-A consists of 24 questions. Attempt any 20 questions from this section.The first attempted 20 questions would be evaluated.1.Which of the following statement(s) s is/are true?On exposure to sunlight for a long duration silver chloride turn Grey due to2.(i) The formation of silver by decomposition of silver chloride(ii) Decomposition of chlorine gas from silver chloride.(iii) Sublimation of silver chloride(iv) Oxidation of silver chlorideA.(i) OnlyB.(i) and (ii)C. (ii) and (iii)D. (iv) and (ii)In the refining of silver, the recovery of silver from silver nitrate solution involveddisplacement of copper metal2AgNO3 (aq) Cu (s)2Ag (s) Cu(NO3)2 (aq)Which option in the given table correctly represents the substance reduced andreducing agent?Option Substance reducedReducing agentABCAgNO3AgCuCuCuAgNO3
3.4.5.6.DCuAgSamples of metals A, B, C and D were taken and added to the following solutionsone by one. The results of obtained have been tabulated as follows.Arrange the metals A, B, C and D in the order of decreasing reactivity:A. B D A CB.A B C DC. D C A BD. B A C DWhich of the following are present in a dilute aqueous solution of hydrochloricacid?OptionPositive ionNegative ionAH3O OH BH3O Cl CCl OH DOHCl In the electrolysis of water, name the gas which is collected in double volume thanthe gas collected at anodeA. OxygenB.HydrogenC. NitrogenD. HeliumThe Apparatus given in the adjoining figure was such as to demonstrate electricalconductivity. Which of the following statement(s) is/are and correct.
7.8.9.A. The bulb will not glow because electrolyte is not acidic.B. Bulb will not glow because it depends upon the type of electrolytic solutionC.Bulb will not glow because circuit is incomplete.D.Bulb will glow because HCl is a strong acid and furnishes ions for conductionWhich of the following correctly represents a balanced chemical equation?A. MnO2 HCl(aq)MnCl2 Cl2 2H2OB. MnO2 2HCl (aqMnCl2 Cl2 2H2OC. MnO2 4HCl (aqMnCl2 Cl2 2H2OD. MnO2 4HCl(aq)MnCl2 Cl2 H2OEqual volumes of hydrochloric acid and sodium hydroxide solutions of sameconcentrations are mixed and the pH of resulting solution is checked with pHpaper. What would be the colour obtained?A. RedB. YellowC. GreenD. BlueRita was doing and activity, she observed that when crystals of copper sulphate arestrongly heated the the colour of of copper sulphate changes from Blue to White.Why does so happen?
10.11.12.A. Due to photodecomposition of copper sulphate.B. Due to loss of water molecules from Copper sulphate.C. Due to oxidation of Copper sulphate.D. Due to thermal decomposition of copper sulphateThere is an equation ‘X’, which contain equal number of atoms of each element onboth the sides. What is ‘X’?A. A balanced equation.B. An unbalanced equation.C. A chemical equation.D. Skeletal chemical equationCarefully study the diagram of the human Circulatory system with labels 1, 3, 2 and6. Select the option which gives correct identification and main function and /orcharacteristic.A (1) Pulmonary Artery: The pulmonary artery carries deoxygenated blood fromthe right ventricle to the lungs.B (3) Pulmonary Vein: The pulmonary vein carries deoxygenated blood from theright ventricle to the lungs.C (2) Superior Vena Cava: The superior vena cava carries oxygen rich blood fromthe heart.D (6) Left Ventricle: It supplies blood to the entire body and lungs.Nephrons are made up of a cluster of thin walled capillaries calledwhich is associated with a cup like structure called asand the long tubewhich terminates through this capsule.
13.A Glomerulus, Bowman’s capsuleB Neurons, Bowman’s capsuleC Nephrons, Bowman’s capsuleD Glomerulus, Convoluted tubuleThe image shows the circulation of blood in fishes and human.How is the circulation of blood in fish different from that in humans?(a) The heart in fish is bigger in size.(b) The flow of blood in fish is bidirectional.(c) The blood goes through heart only once in fishes.(d) The heart of fish has more chambers compared to that of human.14.Given below is the figure of stomata. Select the correct labeling for the diagram.(a) 1 Epidermal cell, 2 Stoma, 3 Guard cell, 4 Chloroplast(b) 1 Guard cells, 2 Stoma, 3 Epidermal cells, 4 Chloroplast(c) 1 Stoma, 2 Epidermal cells, 3 Chloroplast, 4 Guard cell(d) 1 Chloroplast, 2 Stoma, 3 Epidermal cells, 4 Guard cell15.The role of nasal cavity in Human Respiratory system is:
(i) Filtration of inhaled air(ii) Removal of germs and dust(iii) Moistening of inhaled air(a) (i) and (ii)(b) (ii) and (iii)(c) (i), (ii) and (iii)(d) None of these16.In the experiment given here, water will rise in the tube because-The correct reason to rise in the tube is(a) Oxygen of air in the flask will be taken up by the germinating seeds.(b) Carbon dioxide given out by the germinating seeds will be absorbed by theKOH.(c) Carbon dioxide given out will go through the glass tube and will push waterup into the test tube.(d) Moisture in the germinating seeds will reach the water in the beakerthrough the delivery tube.17.The properties of image formed by the plane mirror are:(i) Virtual(ii) Inverted(iii) Laterally inverted(iv)Size of the image is equal to that of the object.Choose the correct option.(a) (ii), (iii) and (iv)(b) (i), (iii) and (iv)(c) (i), (ii) and (iii)(d) (i), (ii) and (iv)18.A convex lens produces a magnification of 5. Where the object should be placed?(a) At 2f(b) Between 2f and f(c) At f(d) At less than fRam placed a glass slab on a drawing sheet and marked its boundaries PQRS. Thenhe removed the glass slab and drew lines and angles as shown in the given figure.He observed the path of light through the glass slab. Where does the incident andemergent ray meet in this figure?19.
20.21.22.(a) Inside the glass(b) Above the glass slab(c) At infinity(d) None of theseWhen an object is placed beyond the centre of the curvature(C) of a concavemirror, the image formed is:(a) Between the focus and the centre of the curvature(C)(b) Real and inverted(c) Smaller than the object(d) All of the aboveA student obtains a sharp image of the distant window (W) of the schoollaboratory on the screen (S) using the given concave mirror (M) to determine itsfocal length. Which of the following distances should he measure to get the focallength of the mirror?(a) MW(b) MS(c) SW(d) MW- WA beam of light is incident through the holes on side A and emerges out of the holeson the other face of the box as show in the figure. Which of the following could beinside the box?(A) Concave lens(B) Rectangular glass slab(C) Prism(D) Convex lens
23.24.Which of the following statements is true?(a) A convex lens has 4 dioptre power having a focal length 0.25 m(b) A convex lens has -4 dioptre power having a focal length 0.25 m(c) A concave lens has 4 dioptre power having a focal length 0.25 m(d) A concave lens has -4 dioptre power having a focal length 0.25 m.A child is standing in front of a magic mirror. She finds the image of her headbigger, the middle portion of her body of the same size and that of the legs smaller.The following is the order of combinations for the magic mirror from the top.(a) Plane, convex and concave(b) Convex, concave and plane(c) Concave, plane and convex(d) Convex, plane and concaveSECTION –BSection-B consists of 24 questions. Attempt any 20 questions from this section.The first attempted 20 questions would be evaluated.2526.27.Which of these has pH less than 7?(a) Copper Sulphate(b) Sodium Bicarbonate(c) Calcium Carbonate(d) Magnesium AcetateIf a few drops of a concentrated acid accidentally spill over the hand of a student,what should be done?(a) Wash the hand with saline solution.(b) Wash the hand immediately with plenty of water and apply a paste of sodiumhydrogen carbonate.(c) After washing with plenty of water and apply solution of sodium hydroxide onthe hand.(d) Neutralize the acid with a strong alkali.Which of the following are exothermic processes?(a) Reaction of water with quick lime(b) Dilution of an acid(c) Evaporation of water(d) Sublimation of camphor (crystals)A) (a) & (b)B) (b) & (c)C) (a) & (d)D) (c) & (d)28.Reaction between X and Y, forms compound Z. X loses electron and Y gainselectron. Which of the following properties is not shown by Z?(a) Has high melting point(b) Has low melting point(c) Conducts electricity in molten state(d) Occurs as solid29Increase in the OH– ion concentration, leads to(a) An increase in the pH of solution(b) A decrease in the pH of the solution(c) Doesn’t alter the pH of the solution(d) Decreases the basic strength of the solution
30.One of the constituents of baking powder is sodium hydrogen carbonate, the otherconstituent is(a) Hydrochloric acid(b) Tartaric acid(c) Acetic acid(d) Sulphuric acidQuestion No. 31 to 35 consist of two statements – Assertion (A) and Reason (R). Answerthese questions selecting the appropriate option given below:A.Both A and R are true and R is the correct explanation of AB.Both A and R are true and R is not the correct explanation of AC.A is true but R is falseD.A is False but R is true31.Assertion: The acid must always be added to water with constant stirring.Reason: Mixing of an acid with water decreases the concentration of H ions perunit volume.32.Assertion:Copper is heated with the oxygen present in the air and forms a blackcoloured substance on its surface.Reason: Black colour substance on copper surface is formed due to reduction ofcopper into copper oxide.33.Assertion: Turgor pressure is the positive pressure that develops in the plant celldue to entry of water.Reason: During growth of cells, the turgor pressure is responsible for enlargementand extension.34.Assertion: A ray of light travelling from a rarer medium to a denser medium slowsdown and bends away from the normal. When it travels from a denser medium toa rarer medium, it speeds up and bends towards the normal.Reason: The speed of light is higher in a rarer medium than a denser medium.35.36.37.Match the acids given in Column (A) with their correct source given in ColumnWhich of the following is correctly matched?(A)Lactic acid-vinegar,Acetic acid-Lemon,Citric acid-Tomato,oxalic acid-curd(B)Lactic acid-Lemon,Acetic acid-Tomato,Citric acid-curd,oxalic acid-vinegar(C)Lactic acid-curd,Acetic acid-Lemon,Citric acid-Tomato,oxalic acid-vinegar(D)Lactic acid-curd,Acetic acid-vinegar,Citric acid-lemon,oxalic acid-TomatoWhat prevents the back-flow of blood inside the heart during contraction?(A)thick muscular walls of ventricles(B) valves(C) thin walls of atria(D)all of the aboveWhich part of alimentary canal receives bile from the liver(A)Stomach(B)Small intestine(C)Large intestine
38.39.40.41.42.43.44.(D)EsophagusTranspiration and root pressure cause water to rise in plants by(A)Pushing it upward(B)Pushing and pulling it respectively(C)Pulling and pushing it respectively(D)Pulling it upwardMagnifying power of a concave lens is:(A)always 1(B) always 1(C) always 1(D) can have any valueA 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm longimage of the awl pin is formed at 30 cm in front of the mirror. The focal length ofthis mirror is(A) -30 cm(B) -20 cm(C) -40 cm(D) -60 cmThe correct path of urine is:a) Kidney ureter urethra urinary bladderb) Kidney urinary bladder urethra ureterc) Kidney ureter urinary bladder urethrad) Urinary bladder kidney ureter urethraWhat is the correct route for blood flow in a human?a) Left atrium Left ventricle Lungs Right ventricle Right atriumb) Left atrium Left ventricle Right ventricle Right atrium Lungsc) Right atrium Right ventricle Left ventricle Left atrium Lungsd) Right atrium Right ventricle Lungs Left atrium Left ventricleThe unit of power of lens is:a) Meterb) Diopterc) Centimeterd) M-1A light ray enters from medium A to medium B as shown in figure. The refractiveindex of medium B relative to A will be:(a) greater than unity(b) less than unity(c) equal to unity(d) zero45.The optical phenomena, twinkling of stars, is due to:(a) Atmospheric reflection(b) Total reflection(c) Atmospheric refraction(d) Total refraction
46.47.The path of a ray of light coming from air passing through a rectangular glass slabtraced by four students are shown as A, B, C and D in figure. Which one of them iscorrect?(a) A(b) B(c) C(d) DConvex lens focus a real, point sized image at focus, the object is placed:a) At infinityb) Between F and 2Fc) At focusd) At 2F48.An element A is soft and can be cut with a knife. This is very reactive to air andcannot be kept open in air. It reacts vigorously with water. Identify the elementfrom the followinga) Mgb) Nac) Pd) CaSECTION –CSection-C consists of three cases followed by questions. There are a total of 12 questions inthis section. Attempt any 10 questions from this section.The first attempted 10 questions would be evaluated.Case49.In the above image, an experiment is being performed where 2 g ferrous sulphatecrystals are taken in a dry boiling tube. The color of the ferrous sulphate crystals isnoted down. After that, the boiling tube is heated over the flame of a burner andthe colour of the substance is noted down. Based on the above experiment, answerthe questions given below.What was the initial colour of the ferrous sulphate crystals?(a) red(b) white(c) brown
50.51.52.Case53.(d) light greenWhat was the colour of the substance obtained on heating till decomposition.(a) red(b) white(c) brown(d) greenWhich type of the reaction took place in boiling tube on heating?(a) Decomposition reaction(b) Precipitation reaction(c) Displacement reaction(d) Combination reactionThe substance obtained on heating ferrous sulphate crystals is(a) ferric oxide(b) Sulphur dioxide(c) Sulphur trioxide(d) all of the aboveShweta bought a potted rose plant from her nearby nursery. She loved her plant somuch that she kept the plant in the dark corner of her bedroom. After few days herplant eventually started to dry though she provides water to her plant every day.Which requirement is not fulfilled by the rose plant?(a) water(b) carbon dioxide(c) sunlight54.(d) chlorophyllWhich process got disturbed in the plant?(a) photosynthesis(b) breathing(c) excretion(d) reproduction55.How the plant survived for a few days without performing photosynthesis?(a) due to starch(b) due to carbondioxide(c) due to chlorophyll56.(d) due to waterWhat would you suggest to Shweta for keeping her rose plant healthy?(a) she should keep her plant in dark place(b) the plant should have access to water, carbondioxide and sunlight(c) she should transplant her rose in a bigger pot(d) she should keep her plant in kitchen
CaseIf you have an aquarium or fish bowl at home, you might notice the fish looksbigger when you look through the side. However, if you put your hand on theopposite side of the aquarium/bowl, it also looks bigger.57.Observe the picture and identify the reason?(a) Due to reflection(b) Due to refraction(c) Due to dispersion58.(d) Due to scatteringSI unit of refractive index is(a) dioptre(b) metre(c) watt59.(d) no unitThe formula to calculate the refractive index is(a) n cv(b) n v/c(c) n c/v60.(d) v ncGlass has a refractive index . than that of air.(a) equal(b) greater(c) less(d) impossible to say.
1.SAMPLE QUESTION PAPER (TERM I)
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