- PDF Free Download

Size: px

Start display at page:

Download ""

Marion Wiggins
5 years ago
Views:

1 Sample Paper For 2012 SCIENCE / fokku Class IX / & IX Time allowed: 3 hours Maximum Marks: 90 fu/kkzfjr le; % 3?k.Vs vf/kdre vad % 90 General Instructions: The question paper comprises of two sections, A and B. You are to attempt both the sections. All questions are compulsory. (iii) There is no overall choice. However, internal choice has been provided in all the five questions of five marks category. Only one option in such questions is to be attempted. (iv) All questions of section A and all questions of section B are to be attempted separately. (v) Questions 1 to 3 in section A are one mark questions. These are to be answered in one word or in one sentence. (vi) Questions 4 to 7 in section A are two marks questions. These are to be answered in about 30 words each. (vii) Questions 8 to 19 in section A are three marks questions. These are to be answered in about 50 words each. (viii) Questions 20 to 24 in section A are five marks questions. These are to be answered in about 70 words each. (ix) Questions 25 to 42 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. lkeku; funsz k % (iii) (iv) (v) bl iz u i= dks nks Hkkxks a, Hkkx v vksj Hkkx c es a ckavk x;k gsa vkidks nksuksa Hkkxks a ds iz uksa ds mrrj fy[kus gsaa lhkh iz u vfuok;z gsaa iwjs iz u i= ij dksbz p;u izkir ugha gs ijurq ikap&ikap vadks ds ikwap iz uksa es a Hkhrjh p;u fn;k x;k gsa bu iz uksa esa vki dsoy,d Hkhrjh p;u dks mrrj fy[kus ds fy, pqu ldrs gsaa vkidks Hkkx v vksj Hkkx c ds lhkh iz uksa ds mrrj i`fkd&i`fkd fy[kus gksaxsa Hkkx v ds iz u la[;k 1 ls 3 ds iz u,d&,d vad ds gsaaa buds mrrj,d kcn vfkok,d okd; esa nsaa Page 1 of 18

2 (vi) Hkkx v ds iz u la[;k 4 ls 7 ds iz u nks&nks vadksa ds gsaa buds mrrj yxhkx 30&30 kcnksa es a nsus gsaa (vii) Hkkx v ds iz u la[;k 8 ls 19 ds iz u rhu&rhu vadksa ds gsaa buds mrrj yxhkx 50&50 kcnksa es a nsus gsaa (viii) Hkkx v ds iz u la[;k 20 ls 24 ds iz u ikap&ikap vadksa ds gsaa buds mrrj yxhkx 70 kcnksa esa nsus gsaa (ix) Hkkx c ds iz u la[;k 25 ls 42 ds iz u iz;ksxkred dks ky ij vk/kkfjr cgqfodyih iz u gs aa izr;sd iz u,d vad dk gsa fn, x;s pkj fodyiks a es a ls vkidks dsoy,d lcls mi;qdr fodyi pquuk gsa Section A 1. Ice and water are essentially the same substance? Mention any two differences in their properties. 2. A ball is moving over a horizontal smooth surface with a constant velocity. What type of forces are acting on the ball? 3. Name the organelle of a cell which is often referred as Power House of the cell. 4. State four properties of a true solution. 5. State universal law of Gravitation. The gravitational force between two objects is F. How will the force change when the distance between them is reduced to ¼ th? F ¼ 6. Expand DNA? In which part of a cell it is found? State its function. Page 2 of 18

3 DNA 7. Identify the region of the stem marked A in the diagram given below and the type of simple permanent tissue found in this region. Mention any two characteristic features of the cells found in this tissue. A 8. Design an activity to show that the particles of matter are very small - they are small beyond our imagination. Name the physical state of matter in each case on the basis of the properties given below. Definite size but no definite shape. Page 3 of 18

4 Rigid 9. List in tabular form any three differences between a chemical compound and a mixture. 10. Starting from a stationary position, Rehan paddles his bicycle to attain a velocity of 6 m/s in 30 s. Then he applies brakes such that the velocity of the bicycle comes down to 4 m/s in the next 5 s. Calculate the acceleration of the bicycle in both the cases. 5 s 4 m/s 30 s 6 m/s 11. Water sprinkler used for grass lawns begin to rotate as soon as the water is supplied? State and explain the principle on which it works? 12. A ball is thrown vertically upwards with a velocity of 49 m/s. Calculate The maximum height to which it rises. The total time it takes to return to the surface of the earth.(g=9.8 m/s 2 ) 49 m/s 13. The V-t graph of a ball of mass 25 g moving on road is as given below : Page 4 of 18

5 How much force does the road exert on the ball to bring it to rest? What is the direction of force exerted by the road? 25 g 14. List three phenomena which can be explained by applying universal law of gravitation. 15. What are the three main functions of areolar tissues? 16. What are complex tissue? Name the two types of complex permanent tissue present in plants? Give one function of each complex tissue. 17. Write any three differences between a prokaryotic cell and eukaryotic cell in a tabular form. Page 5 of 18

6 18. List two characteristics each of roughage and concentrate in relation to animal feed. Give one example of each. Which method is commonly used for improving cattle breeds? 19. What are weeds? Removal of weeds from cultivated fields during the early stages of growth of crops is essential for a good harvest. Justify the statement. 20. What is Tyndall effect? Describe an activity to show that a true solution does not show Which of the following will show Tyndall effect? Give reason also : Milk Salt solution (iii) Sugar solution (iv) Starch solution (iii) (iv) What is chromatography? How will you separate the components of black ink using chromatography? Draw a neat labelled diagram to show the separation. OR 21. What is meant by evaporation of a liquid? Water kept in an earthen pot becomes cool during summer. Why? Page 6 of 18

7 With the help of a labelled diagram, describe in brief an activity to show sublimation of ammonium chloride. OR Compare in tabular form, the properties of Solids, Liquids and Gases with respect to : (iii) (iv) (v) (iii) Shape Volume Compressibility Diffusion Fluidity or Rigidity (iv) (v) 22. Define force and its S.I. unit. The speed-time graph of a car of 1000kg mass is given below. From the graph answer the following: Page 7 of 18

8 When is the maximum force acting on the car? Why? What is the retarding force? (iii) For which time interval is there no force acting? 1000 kg (iii) S.I. OR State the law of conservation of momentum. Explain how the third law of motion reasons the recoil of gun. A bullet of mass 20g is fired horizontally with a velocity of 150 m/s from a pistol of mass 2 kg. What is the recoil velocity of the pistol? Page 8 of 18

9 2 kg 20g 150 m/s 23. The V-T graph of cars A and B which start from the same place and move along a straight road in the same direction, is shown. Calculate the acceleration of car A between 0 and 8s. the acceleration of car B between 2s and 4s. (iii) the points of time at which both the cars have the same velocity (iv) which of the two cars is ahead after 8 sec. and by how much? A B 0 8 s A 2 s 4 s B Page 9 of 18

10 (iii) (iv) 8 s OR The velocity time graph of a car is given below. The car weighs 1000 kg. What is the distance travelled by the car in the first 2 seconds? What is the braking force at the end of 5 seconds to bring the car to a stop within one second? 1000 kg Why are Italian bees preferred over other bees for commercial honey production? What factors determine the quality of honey? OR Page 10 of 18

11 Mention three ways by which insect pests attack the plants? How are they controlled in organic farming method? What will happen when methods like chemicals are used for controlling them? Section B 25. To prepare a colloidal solution of starch we should : add starch powder to boiling water and cool add starch powder to cold water and boil heat starch powder, add it to the cold water and then bring to boil add a thin paste of starch to boiling water while stirring 26. A mixture consists of an insoluble substance X and a soluble substance Y. The mixture is dissolved in water and filtered. The filtrate so collected contains : substance X only substance Y only substance X and water only substance Y and water only X Y X Y X Y Page 11 of 18

12 27. X is a mixture of iron filings and sulphur and Y is a product obtained by heating the mixture X and crushing it to a fine powder. On bringing a magnet over both X and Y, Rahul observed that : X and Y both are attracted. X is attracted while Y is not. Y is attracted while X is not. Both X and Y are not attracted. X Y X X Y X Y X Y Y X X Y 28. It is advised to rub Magnesium ribbon with sand paper before burning it in air because it. is very hard and may not burn may have a layer of its oxide or sulphide which may hinder its burning will become more reactive under goes a chemical change on being rubbed with sand paper Page 12 of 18

13 29. Which one of the following would not be required for the determination of melting point of ice? Thermometer Iron stand Pumice stone pieces Stirrer 30. While determining the boiling point of water the bulb of thermometer should : Touch the bottom of the flask Dip in water Be kept touching the pumice stone in the flask Be kept just above the surface of water 31. Which one of the following figures describes the process? Solid heat Vapours Page 13 of 18

14 A B C D A B C D 32. What is observed first, when a mixture of iron filings and sulphur powder is heated in a china dish? (A) Sulphur starts melting (B) Mixture becomes red hot (C) Iron starts melting (D) Mixture evaporates (A) (B) (C) (D) Page 14 of 18

15 33. Rubbing of magnesium ribbon with sand paper or any other abrasive will. alter its physical properties alter its chemical properties result in a chemical change have no effect on its physical or chemical properties. 34. In a mixture of common salt, sand and ammonium chloride : first step of separation is : sublimation filtration crystallization distillation 35. Raisins swell up after being placed them in a beaker containing water for sometime because. Water inside the raisins exits when placed in a beaker of water. The concentration of water in the cell sap is the same as that of water in the beaker. The concentration of water in the cell sap is higher than the water in the beaker. The concentration of water in the cell sap is lesser than that of water in the beaker. Page 15 of 18

16 36. The correct figure of onion peel is : 37. (iii) (iv) (iii) (iv) Given below are the four methods of testing the presence of metanil yellow in a given sample of arhar dal. The correct method is : 5 grams of dal is added to 5 gms of metanil yellow. 5 gms of dal is added to 5 ml of water and 2 drops of conc Hcl. 5 gms of boiled dal is added to 5 ml of water. 5 gms of boiled dal is added to 5 gms of metanil yellow. 5 5 Page 16 of 18

17 A sample of pulse was taken in a test tube and a drop of iodine was added to test for starch. The colour observed will be : yellow blue black blue black 39. The correct feature of check epithelium is : Absence of cell wall, nucleus and plastid. Absence of nucleus, plastids. (iii) Absence of cell wall, plastids and intercellular space. (iv) Absence of intercellular space and nucleus. (iii) (iv) (iii) (iv) (iii) (iv) 40. Which of the following shows parenchyma? Page 17 of 18

18 A B C None of these A B C 41. A student recorded the mass of dry raisins as 2.0 g and the mass of raisins after soaking as 3.5 g. The percentage of water absorbed by raisin is 20 % 10 % 75 % 40 % 2.0 g 3.5 g 20 % 10 % 75 % 40 % 42. The cell body of a nerve cell is called : cyton axon neuron dendrite Page 18 of 18

SUMMATIVE ASSESSMENT I (2011) Lakdfyr ijh{kk&i SCIENCE / fokku. Class IX / & IX

SUMMATIVE ASSESSMENT I (2011) Lakdfyr ijh{kk&i SCIENCE / fokku Class IX / & IX 470023 Time allowed: 3 hours Maximum Marks: 90 fu/kkzfjr le; % 3?k.Vs vf/kdre vad % 90 General Instructions: (i) The question