Samacheer Kalvi Model Papers Essays

Samacheer Kalvi Model Papers Essays Samacheer Kalvi Model Papers Essay Samacheer Kalvi Model Papers Essay 2 1 3 4 2 5 6 3 7 8 4 9 10 5 11 12 6 13 1 7 Shelley saw a wounded dog He brought it home He loved . the dog 26 The dog too __________________ 27 ________________ to trace the owner 28 One day , a lady 29 The dog’s real name ______________ 30 2 The dog had to be given back, as 3 8 4 5 9 Savings10% Food 30% Rent 30% Entertainment 5% Education 20% Clothes 5 % 6 7 10 are here 8 9 11 Sample Question Paper Class X MATHEMATICS Time: 2. 30 Hrs. ] [Maximum Marks: 100 General Instructions: (i)This question paper consists of four sections. Read the note carefully under each Section before answering them. (ii) The roughwork should be shown at the bottom of the pages of the Answer book. (iii) Use of Calculator and electronic devices not permitted. SECTION – A Note: (i) Answer all the 15 questions (ii) Choose the correct answer in each question. Each of these questions contains four options with just one correct option (iii) Each question carries One mark 15 ? 1 = 15 1. Let A = { 1, 3, 4, 7, 11 }, B = {–1, 1, 2, 5, 7, 9 } and f : A B be given by f = { (1, –1), (3, 2), (4, 1), (7, 5), (11, 9) }. Then f is (A) one-one (B) onto (C) bijective (D) not a function 2. The common ratio of the G. P 2 , 6 , 18 , 54 g is 5 25 125 625 (B) 5 (C) 3 (D) 4 (A) 2 5 5 5 a4 3 , then the 13th term of the A. P. is 3. If a1, a2, a3, g are in A. P. such that = a7 2 3 (B) 0 (C) 12a1 (D) 14a1 (A) 2 4. The LCM of 62 y, 92 yz, 122 y2 z is (A) 362 y2 z (B) 48xy2 z2 2 (C) 962 y2 z2 (D) 72xy2 z 5. If b = a + c , then the equation ax + bx + c = 0 has (A) real roots (B) no roots (C) equal roots 1 1 6. If A # c m = ^ 1 2 h then the order of A is 0 2 (A) 2 # 1 (B) 2 # 2 (D) no real roots (C) 1 # 2 (D) 3 # 2 7. The slope of the straight line 7y 2x = 11 is equal to (A) 7 2 (B) 7 2 (C) 2 7 (D) 2 7 8. The perimeter of a triangle formed by the points (0, 0), (1, 0), (0, 1) is (A) 2 (B) 2 (C) 2+ 2 (D) 2– 2 9. In 9 PQR, RS is the bisector of +R . If PQ = 6 cm, QR = 8 cm, RP = 4 cm then PS is equal to P (A) 2 cm 10 (C) 3 cm (B) 4 cm (D) 6 cm Q 6cm S 4cm R 8cm 12 10. Chords AB and CD cut at P inside the circle; If AB = 7, AP = 4, CP = 2, then CD = (A) 4 (B) 8 (C) 6 (D) 10 24. A ladder leaning against a vertical wall, makes an angle of 60c with the ground. The foot of the ladder is 3. 5 m away from the wall. Find the length of the ladder. sin i cos i 25. Prove the identity cosec i + sec i = 1 26. A right circular cylinder has radius of 14 cm and height of 8 cm . Find its curved surface area. 27. The circumference of the base of a 12 m high wooden solid cone is 44 m. Find the volume. 11. A man is 28. 5 m away from a tower. His eye level above the ground is 1. 5 m. The angle of elevation of the tower from his eyes is 45c. Then the height of the tower is (A) 30 m 12. 1 = tan i + cot i (A) sin i + cos i (B) sin i cos i (C) sin i cos i (D) cosec i + cot i (B) 27. 5 m (C) 28. 5 m (D) 27 m 13. If the total surface area of a solid hemisphere is 12r cm2 then its curved surface area is equal to (A) 6r cm2 (B) 24r cm2 (C) 36r cm2 (D) 8r cm2 29. Two coins are tossed together. What is the probability of getting at most one head. 30. (a) Simplify. 62 54 x2 + 7x + 12 [OR] (A) 42 (B) 25 (C) 28 (D) 48 (b) Show that the lines 2y = 4x + 3 and x + 2y = 10 are perpendicular. 15. If A and B are mutually exclusive events and S is the sample space such that P (A) = 1 P (B) and 3 S = A , B , then P (A) = (A) 1 4 (B) 1 2 (C) 3 4 (D) 3 8 SECTION – B Note: (i) Answer 10 questions (ii) Answer any 9 questions from the first 14 questions. Question No. 30 is Compulsory. (iii) Each question carries Two marks 10 ? 2 = 20 16. If A = {4, 6, 7, 8, 9}, B = {2, 4, 6} and C = {1, 2, 3, 4, 5, 6} A , ^ B + Ch. SECTION – C Note: (i) Answer 9 questions (ii) Answer any 8 questions from the first 14 questions. Question No. 45 is Compulsory. (iii) Each question carries Five marks 9 ? 5 = 45 31. Use Venn diagrams to verify De Morgan’s law for set difference A ^ B + C h = ^ A Bh , ^ A C h . 32. A function f : 6- 7, 6h ( R Find (i) 2 f (- 4) + 3 f (2) x 2 + 2x + 1 7 # x 1 5 f (x) = * x + 5 -5 # x # 2. x-1 2 11 6 (ii) f (- 7) f (- 3) (iii) 4 f (- 3) + 2 f (4) . (- 6) 3 f (1) 17. Let X = { 1, 2, 3, 4 }. Examine whether the relation g = { (3, 1), (4, 2), (2, 1) } is a function from X to X or not. Explain. 18. Three numbers are in the ratio 2 : 5 : 7. If 7 is subtracted from the second, the resulting numbers form an arithmetic sequence. Determine the numbers. 19. If a and b are the roots of the equation 2x 3x 1 = 0 2 3 1 5 20. If A = e o-e o 7 -1 -9 5 A. 2 n terms of the series 12 22 + 32 42 + g 34. Factorize the polynomial x 5x 2x + 24 35. If m nx + 28x + 12x + 9x 2 3 4 3 2 a b if a b m and n. 4 2 2 9 -3 21. Find the product of the matrices, if exists e o f- 6 7 4 -1 0 -2 1 22. The centre of a circle is at (other end. 23. In 3 ABC , DE BC and AD = 2 . If AE p 36. The speed of a boat in still water is 15 km/hr. It goes 30 km upstream and return downstream to the original point in 4 hrs 30 minutes. Find the speed of the stream. 37. If A = c 2 -1 5 2 T T T m and B = e o verify that (AB) = B A . 7 3 -1 1 38. Find the area of the quadrilateral formed by the points (- 4, 2), (- 3, 5), (3, 2) and (2 , 3). A 3. 7cm DB 3 EC. B D E C 39. The vertices of 3 ABC are A(2, 1), B(6, –1) and C(4, 11). Find the equation of the straight line along the altitude from the vertex A. 13 AE = 16 cm, EC = 81 cm. He wants to use a straight cross bar BD. How long should it be? B D A E C 41. A vertical tree is broken by the wind. The top of the tree touches the ground and makes an angle 30c of the tree. 42. Using clay, a student made a right circular cone of height 48 cm and base radius 12 cm. Another student reshapes it in the form of a sphere. Find the radius of the sphere. 43. Calculate the standard deviation of the following data. x f 3 7 8 10 13 15 18 10 23 8 Time: 2. 30. Hrs MODEL QUESTION PAPER X STANDARD – SCIENCE Marks:75 Section – A I . Answer all questions 15 x 1 =15 1. A fruit develops from a single flower with multicarpellary, apocarpous, superior ovary is (Aggregate fruit, composite fruit, simple fruit, multiple fruit) 2. Which of the following constitute a food chain { (Grass, Wheat, Mango), (Grass, goat and Human),(Goat, cow and elephant),(Grass, fish and goat)} 3. Somatic genetheraphy does ( affect the sperm, affect the egg, affect the progency, affect body cell) 4. Pick out the bacterial disease( Meningities, Rabies, Tetanus, Small pox) 5. Mammal’s main excretory product is (Ammonia, Uric acid, Urea, Sodium) 6. When sunlight passes through the window of your house, the dust particles scatter the light making the path of the light visible. This phenomenon is called as (Brownian motion , tyndall effect, Raman Effect , uniform motion) 7. 2KClO3 2KCl + 3O2 In this chemical reaction MnO2 acts as (reactant, product , catalyst, promoter) 8. Number of groups in modern periodic table is (7,17,18,8) 9. An amalgam is an alloy of metal with ( carbon, mercury, hydrogen, gold) 44. The probability that a new car will get an award for its design is 0. 5, the probability that it will get Find the probability that (i) it will get atleast one of the two awards (ii) it will get only one of the awards. 45. (a) The sum of three consecutive term in an A. P. is – 6 and their product is 90. Find the three numbers. [OR] (b) A Cylindrical jar of diameter 14cm and depth 20cm is half-full of water . 300 leadshots of same size are d ropped into the jar and the level of water raises by 2. 8cm. Find the diameter of each leadshots. SECTION – D Note: (i) This section contains Two questions, each with two alternatives. (ii) Answer both the questions choosing either of the alternatives. iii) Each question carries Ten marks 46. 2 ? 10 = 20 (a) Draw the two tangents from a point which is 10 cm away from the centre of a circle of radius 6cm. Also, measure the lengths of the tangents. [OR] (b) Construct a D ABC in which the base BC = 5 cm, + BAC = 40 ° and the median from A to BC is 6 cm. Also measure the length of the altitude from A. 47. (a) Draw the graph of y = x2 – x x2 – 2x – 15 = 0. [OR] (b) A cyclist travels from a place A to a place B along the same route at a uniform speed on different days. The following table gives the speed of his travel and the corresponding time he took to cover the distance. Speed in km / hr x Time in hrs y 2 60 4 30 6 20 10 12 12 10 10. The saturated hydrocarbons form homologous series with the general formula CnH2n+2. The formula of the second member in this series is (C2H2, C2H6,C2H4,C2H8) 11. Light year is the unit of †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. (time, light intensity, distance, mass) 12. Mass of an object in 10 Kg. What is its weight on the earth (w=mg, g=9. 8m/s2 ) (49 N, 25 N, 98 N, 100 N) (i) the number of hours he will take if he travels at a speed of 5 km / hr (ii) the speed with which he should travel if he has to cover the distance in 40 hrs. 14 13. Four cells each of emf â€Å"E† are joined in parallel to form a battery. The equivalent emf of the battery will be †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦(4E, E, E/4, E=0) 14 The symbol LED is ( ) 19. Assertion(A) : The secretions of pituitary gland controls all other endocrine glands Reason (R) : It is known as the conductor of endocrine orchestra 1. 2. 3. 4. A is correct and R is not giving correct reasoning. A is correct and R is wrong A is wrong and R is correct A is relevant and R is giving correct reasoning. 15. Electric power can be transmitted over long distance without much loss of energy is an important advantage of †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦.. (AC, DC, Both AC DC ,None) Section B II i)Short Answers ii)Answer any twenty questions. 20. You suspect that your friend is suffering from common cold. What are the questions you will ask your friend to confirm the disease. 21 The polar bears have thick skin coat and wooly fur, the ballen whales have ballen plates. Give reasons 22. The diagram shows that internal structure of the human heart. Label the following parts. a. The blood vessal that carries blood to the lungs b. The blood vessal that carries blood to the different parts of the body. 20 X 2 = 40 16. Match the following disease with suitable causative agents Disease a. b. c. d. Malaria Typhoid Amoebic dysentery Influenza Causative agents Entamoeba histolytica H1N1 Virus. Plasmodium Salmonella typhi 17. Correct the answer a. Variation may be defined as the affinities in the charecteristics among the individual the species b. Evolution is a sudden development from the complex species to simple form Do you agree with the above statements? If not give correct statements. 18. Copy of the diagram of neuron and label the parts A and B 23. The tearing teeth of carnivorous animals †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. The tusk of an elephant is modified teeth of †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. 15 24 Draw and label the any two parts of the anther. 33. Read the redox reaction given below and answer the questions. CuO+H2 - Cu+H2O a. Conversion of CuO in to Cu is called _____________ b. Conversion of H2 into H2O is called _____________ 25. What will happen if all the grass is removed from the grass land eco system? 26. Odd one out a. Coal, petroleum, natural gas, hydrogen b. Fluorescent bulbs, electronic regulator, solar water heater, electric water heater 27. Assertion A :Alcohol is made by fermenting the sugar components of plant materials. It can be used as a fuel for vehicles. Reason (R) :Bioethanol is widely used. 1 2 3 4 A is false statement R is correct A is correct R is wrong A is correct R is relevant A and R statements not relevant. 4. The pH Values of certain familiar substances are given below Substance House hold Ammonia Water Coffee Lemon Juice pH Value 12 7. 0 5. 0 2. 4 Analye the data in the above table and answer the following questions a. Which of the substances are acidic in nature? b. Which substance is basic in nature? 35. This extract from the periodic table shown the symbols for cetain elem ents 28. Monotropa lack chlorophyll and have mycorrhizal roots which absorb nouristiments from the humus, Viscum and cuscuta are also the plants. do they obtain food from plants? Give reason 29. Any water that has been used in the home, with the exception of water in the toilet can be reffered to as waste water. It is also reffered as gray water. Suggest any two ways to reuse this water and state benefit out of it. 30. Pollen grains have ceaseless, zigzag, continuous random motion when taken in a beaker containing water. Name the phenomenon and give the reason. 31. 20 g of common salt is dissolved in 60 g of water. Fine the concentration of the solution in terms of weight percentage? 32. Analyse the table and fill up the blanks Gas N2 O2 Number of moles 2 moles Mass of gas 320 g From the above table a. How many elements are present in the second period? b. Write the group no for fluorine and neon? 36. An alloy of metal A is used in making aircraft parts. A reacts with strong solution of NaOH to give B with the liberation of H2 of gas. Indentify A and B 37. Match the following: Compounds Ethylalcohol Acetaldehyde Methanoicacid Acetone Functional Group ___CO ____ ___OH ___CHO ___ COOH 16 38. Observe the figure and Write the answer 5N - 5N a. The resultant of these forces is ______________ b. Does the ball move? 39. When a gun is fired, it exerts forward forces on the ullet. Why does the gum recoil backwards? 40. Leclanche cell diagram is given below lable the parts. 43. The ray diagram shown below is introduced to show how a concave mirror forms an image A’ B’ of an object AB place at F. a. Identify the mistakes and draw the correct ray diagram. b. Write the justification for four corrections 44. The speed of light in vacuum is 3 X 10 refractive index 4/3. [ Hint: ? = C/V] 8 m. s Calculate the speed of light in medium of 45. Odd one out. a. Myopia, hypermetropia, scurvy, presbyopia b. Convex mirror, concave mirror, plane mirror, convex lens. Section – C Note: i) Answer any four questions by choosing one question from each group ii) Each question carries five marks iii) Draw diagram wherever necessary Group-A 41. Match the following Components 1. Switch (closed) 2. Battery 3. Electric bulb 4. Resistance Symbols 46. a. State any two applications of Bio-sensor in medicines somatic genetherapy does not effect the sperm or egg give reason b. What are the types of gene theraphy? 47. a. The transfer of disease causing germ from an infected person to a normal healthy person, through air by sneezing, coughing and talking is possible. Is there any other agents transmit the infections germs. List the agents or carriers, and the various diseases caused by them. b. Administrating vaccine is to prevent the spread of diseases brief the roley MMR and DT vaccine. 48. Which process gives rise to fruit? Describe that process. 49. Smoke, Smoke everywhere smoke. Is it good for health? List the effects of coal smoking. To meet out the water scarcity we need several ways to increase the water supply. Suggest any two way to manage the crisis. 4 x 5=20 42. Harmful radiations originate from a nuclear reactor. Precautions are taken to see that they do not become a threat to living beings. What are these precautions? 17 Group-B 50. a. Mole concept is introduced to express the quality of a substance. If 90 g of water is taken in a beaker find the number of moles in it. b. Atoms and moles are the building blocks of matter. List out any 2 differences between them. 51. a. Ethanoic acid reacts with ethanol in the presence of concentrated sulphuric acid. i) Name the organic product formed . ii) Give the name of the reaction. iii) What is the role of the sulphuric acid in the above reaction b. The structural formula of an organic compound is CH 3 – CH 2 OH i) Write the IUPAC name of this compound ii) Give one use of this compound. 1. The length of the object AB 2. The distance to the image. 3. The focal length of the spherical mirror Group – C 52. a. Place the following objects in the correct order from the lowest to the highest momentum. Assume that all of the objects are moving at their maximum velocity. Freight train, Bus, Car, Cycle. { Hint: Momentum = mass X, velocity; p=mv} b. Which object has more momentum ; a car travelling at 10 km/hr or a baseball pitched at 150 km/hr? Explain your answer. c. Newton’s third law of motion. For every action there is an equal and opposite reaction. Explain this law, using one illustration. 53. a. Observe the figure and write down the following quantities using Cartesian sign convention. b. Observe the figure and answer the following questions 1. Whey the magnetic needle is deflected? 2. If the direction of current is reversed, what will be the direction of deflection of magnetic needle? 18 Class- X Social Science Reg No II) Match the following A) 15. Woodrow Wilson 16. Swastika Max. Marks: 100 17. Scorched Earth Policy 18. Kesari 19. King Maker Russia Kamaraj Nazi emblem Sathyamurthi Mrs. Annie Beasant America Bala Gangadhar Tilak B) 20. Black soil 21. Coal 22. Southern Railway 23. Insat series 24. 82 ? E Chennai Cotton Central Meridian for India Jharkand Geo. stationary satellite TamilNadu Jharia 10 x 1 =10 Time : 2 ? hours I) Choose the correct answer (compulsory) 1. The English East India Company was formed in the year a)1600 a) Merrut b) 1664 b) Barrackpore c) 1644 c) Barailley d) 1700 d) Kanpur d) Sardar Vallabai Patel d) Adayar d) Enemity d) Zorastrianism d) March 11 d) Kerala 2. The Sepoys broke out into open revolt at 3. The task of unifying Indian states was undertaken by a) Dr. B. R. Ambedkhar b) Dr. Rajendra Prasad c) Rajaji a) Anna nagar a) War a) Vedic religion b) Chengalpet b) Peace b) Christianity c) Kanchipuram c) Love c) Islam 4. Due to Dr. Muthulakshmi’s good effort the Cancer Institute was started at 5. India is a country with an unbounded faith in 6. The ancient religion of our country is 7. World Consumer Day is celebrated on a) March 15 b) March 16 c) March 14 8. India is surrounded by †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. In the east a) Bay of Bengal b) Arabian sea c) Indian ocean 9. The largest mangrove forest is located in †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦ a) Pichavaram b) Muthukadu c) Sundarbans 14 x 1 = 14 III) Answer any Ten of the following questions in brief: (Choose four from section A, one from section B, four from section C and one from section D) Section-A 25. How did China become an International colony? 26. What are the four pillars of Fascism? 27. What is the significance of the Euro? 28. Point out any two impacts of Social and Religious Reform Movements. 29. What was the resolution passed in the Lahore Session of the Congress in 1929? 30. Write a short note on Tiruppur Kumaran? Section-B 31. Why is World Peace an essential one? 2. Why is India called the â€Å"Museum of Human race†? Section-C 33. Define multipurpose projects 34. Give reason for wheat being cultivated only in North India. 35. Give reason for sugar industry being located near the sugarcane growing area. 36. List out two advantages of pipeline transportation 37. Define Unfavourable balance of trade. 38. Define Remote sensing Section-D 2 102=20 d) Terai 10. The southwest Monsoon season last between †¦Ã¢â‚¬ ¦.. a) June to September b) September to October c) December to February d) March to May 11. TISCO belongs to †¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦. Sector. a) Private b) Joint c) Co. operative d) Pub lic 12. National Income is otherwise called as a) Real Income b) Money Income c) Nominal Income d) Gross National product 13. Nehru decided that India would be a a) Mixed Economy b) Socialist Economy c) Capilatist Economy d) Money Economy 14. Green Revolution was introduced in the year a) 1967 b) 1977 c) 1987 d) 1957 1 19 39. What is Percapita Income? 40. What do you mean by Globalization? IV) Choose any two of the following and answer all the questions given under each caption: 24=8 41. Balkan Problem a) Name the Balkan Countries. b) How did the First Balkan war come to an end? c) Why did the other Balkan Countries declare war on Bulgaria? ) What was the result of the Second Balkan war? 42. Major achievement of the UNO a) Name the treaties signed by the UNO b) Where was the UN Conference on Environment and Development held? c) What was adopted by all the countries? d) How did the UNO tackle the Suez Canal crisis? 43. Ramakrishna Mission a) Who was Ramakrishna Paramahamsa? b) Who founded the Ramakrishna Mission? c) When and Where was the Parliament of Religions held? d) Who represented the Hindu religion at the Parliament of religions? 44. The Justice Party a) Who established the Justice Party? b) When did the Justice Party come to power? ) When was it defeated? d) Write any two achievements of the Justice Party. V) Distinguish between any four of the following 45. Western coastal plain and Eastern coastal plain 46. Hot weather season and Winter season. 47. Black soil and Alluvial soil 48. Kharif season and rabi season 49. Small scale industry and cottage industry 50. Export and Import 42=8 VI) Answer one from section A, one from section B, one from section C and one from section D in a paragraph: 4 x 5 = 20 Section-A 51. Write a paragraph about Relief, Recovery and Reforms introduced by Franklin D. Roosevelt 52. Write a short note on Salt Satyagraha 53. Write a paragraph about Panch Sheel and the policy of Non- alignment Section-B 54. Explain the role of Opposition Party in a democracy. 55. What are the measures taken by the Government of Tamil Nadu to protect the Consumers. 56. Contributions of India towards world peace Section-C 57. Describe about Himadri, 58. List out the advantages of roadways. 59. Explain the significance of GPS with reference to Geography. Section-D 60. Explain the basic concepts of National Income. 61. Explain Green revolution. 62. List down The various Welfare measures implemented by the government of Tamilnadu. VII) Draw a Time line on the following 63. Any five important events between the years 1920 and1935. (5 marks) VIII) Mark any five of the following (Choose maximum 2 from map of Asia and 3 from map of India) (5 marks) 64. Mark the following in the given outline map of Asia. a) Peking b) Hong Kong c) Canton d) Formosa (or) 65. Mark the following in the given outline map of India. a) Barrackpore b) Chauri Chaura d) Surat e) Meerut 66. Mark any five places / regions on the given India outline map and write one sentence about the place 1. Mt. Everest 2. The Ganges 3. The Alluvial soil region 4. Desert vegetation 5. Tea growing region in south India. 6. Mumbai Chennai port 3 4 20