BANYAN TREE SCHOOL, LODHI ROAD SUMMER HOLIDAYS HOMEWORK CLASS X( )

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1 BANYAN TREE SCHOOL, LODHI ROAD SUMMER HOLIDAYS HOMEWORK CLASS X( ) English Read the supplementary reader and answer the following questions in the Literature Notebook. 1. Anne called 26th July a tumultuous day. Explain the reasons behind it. 2. In what way does Anne s description of life in the secret Annexe around the end of 1943, differ from the earlier entries? 3. How did the diary help Anne overcome her loneliness? 4. Why did Anne call herself a songbird without wings? Hindi B नदश- 1.सभ क य करण क क प म करन ह 2.सभ क य स दर एव स फ़ लख वट म कए गए ह क य- 1.अप ठत ग श- अपन करण क प तक म स पहल द (अ य स म स ) अप ठत ग श कर 2. अप ठत प श- अपन करण क प तक म स पहल द (अ य स म स ) अप ठत प श कर 3. स व द-ल खन- बढ़त मह ग ई क ल कर प नम और क स म क ब च स व द ल खए 4.स चन -ल खन- ब ल क य ण क नधन छ क लए ड.ए.व. क ल जस ल म अ त र क ए लग न च हत ह इसक लए एक स चन त य र क जए 5.श ल र न मत फ म त सर कसम क द ख ओर अपन श द म कह न तथ फ म क स द श लख Sanskrit French 1.न तक श स स ब धत एक लघ कथ च स हत ल खय 2.वष ऋत क च बन कर उस पर आध रत प च व य स क त म ल खए Make a brochure (using a4 size sheet) on any city situated in india (other than delhi). Paste different pictures related to it. Description should be written in French language. Mathematics : General Instructions: To be done in separate notebook. To be submitted by 4 th July, Find the LCM of 315 and 360 by the prime factorization method. Hence find their HCF. 2. Find the HCF 300, 360 and 240 by the prime factorization method.

2 3. Prove that 7 is an irrational number. 4. α, β are the roots of the quadratic polynomial p(x) = x 2 (k + 6)x + 2(2k-1). Find the value of k, if α + β = αβ. 5. Show that is an irrational number. 6. What must be subtracted from x 3 6x 2 15x + 80 so that the result is exactly divisible by x 2 + x Using Euclid s division algorithm, show that only one of the numbers n, n + 2 and n + 4 is divisible by If the sum of zeroes of the polynomial f(y) = y 2 + 2y + 3k is equal to their product, find the value of k. 9. State whether 17/8 will have a terminating decimal expansion or a non-terminating repeating decimal. 10. In a school there are two sections- section A and section B of class X. There are 32 students in section A and 36 students in section B. Determine the minimum number of books required for their class library so that they can be distributed equally among students of section A or section B. 11. If the product of zeroes of the polynomial ax 2 6x 6 is 4. Find the value of a. 12. The sum and product of the zeroes of a quadratic polynomial are -1/2 and -3 respectively. What is the quadratic polynomial? 13. Obtain all the zeroes of the polynomial x 2 + 7x + 10 and verify the relationship between the zeroes and its coefficients. 14. If =, prove that = 15. If one zero of the polynomial p(x)= 3x 3 5x 2 11x 3 is -1/3, then find the other zeroes of the polynomial Two tankers contain 850 litres and 680 litres of petrol respectively. Find the maximum capacity of a container which can measure the petrol of either tanker in exact number of times. 17. Draw the graphs of the following equations 2x y 2 = 0, 4x + 3y 24 = 0 and y + 4 = 0. Obtain the vertices of the triangle so obtained. Also, determine its area. 18. In a seminar, the number of participants in Hindi, English and Mathematics are 60, 84 and 108 respectively. Find the minimum number of rooms required if in each room the same numbers of participants are to be seated and all of them being in the same subject. 19. Without using trigonometric tables, evaluate the following: a. ( ) 20. Prove the following identities: a. + = 2 + ( ) b. = ( ) 21. Evaluate the following: a b c

3 d Find an acute angle, when = 23. Determine the value of k for which the given system of equations has no solution 3x 4y + 7 = 0, kx + 3y 5 = Find the values of p and q for which the following systems of equations has infinite number of solutions: 2x + 3y = 7, (p + q)x + (2p q)y = pens and 53 pencils together cost Rs 320, while 53 pens and 37 pencils together cost Rs 400. Find the cost of a pen and that of a pencil. 26. The sum of a two-digit number and the number obtained by reversing the order of its digits is 121, and the two digits differ by 3. Find the number. 27. A fraction is such that if the numerator is multiplied by 3 and the denominator is reduced by 3, we get 18/11, but if the numerator is increased by 8 and the denominator is doubled, we get 2/5. Find the fraction. 28. Ten years ago, father was twelve times as old as his son and ten years hence, he will be twice as old as his son will be. Find their present ages. 29. A man travels 370km partly by train and partly by car. If he covers 250km by train and the rest by car, it takes him 4 hours. But, if he travels 130km by train and the rest by car, he takes 18 minutes longer. Find the speed of the train and that of the car. 30. The sum of the numerator and denominator of a fraction is 3 less than twice the denominator. If the numerator and denominator are decreased by 1, the numerator becomes the half the denominator. Determine the fraction. PHYSICS Science Q1. A 2.0cm high object is placed perpendicular to the principal axis of a concave mirror. The distance of the object from the mirror is 30 cm, and its image is formed 60 cm from the mirror, on the same side of the mirror as the object. Find the height of the image formed. Q2. A 1.2cm long pin is placed perpendicular to the principal axis of a convex mirror of focal length 12cm, at a distance of 8 cm from it. (a)find the location of the image b) find the height of the image (c)is the image erect or inverted? Q3. Sunlight is incident on a concave mirror, parallel to its principal axis. The image is formed at a distance of 12cm from the pole. Find the radius of curvature of the mirror. Q4. An object is placed at a distance of 20cm from a convex mirror of focal length 25cm. Calculate the position of the image. Discuss its nature. Q5. A 2.0cm high object is placed at a distance of 20cm from a spherical mirror which forms a real image at 40cm from the mirror. Calculate the focal length of the mirror and size of the image. Is the mirror converging or diverging. Q6. An object of height 2cm is placed at a distance of 15 cm from a concave mirror of focal length 10cm. Draw a scale diagram to locate the image. From the diagram, find the length of the image formed. Q7. The refractive index of diamond is What is the meaning of this statement? Q8. Identify the type of mirror: (a) Magnification is always +1.

4 (b) Magnification is always less than 1 Q9. (a) Write Snell s Law of Refraction. (b) Following figure shows a light ray travelling from medium A to B. Calculate the refractive index of medium B with respect to medium A? Q10. When a concave mirror is placed facing the sun, the sun's rays converge to a point 10cm from the mirror. Now, an erect, 2cm long pin is placed 15cm away on the principal axis of the mirror. If you want to get the image of the pin on a card, where would you place the card? What would be the nature and height of the image? Chemistry Q1. Explain the following terms : a) Esterification b) Saponification c) Dehydration Q2. An organic compound A having molecular fomula C 2 H 4 O 2 reacts with Sodium metal Na evolves a gas B which readily catches fire. A also reacts with Ethanol in the presence of concentrated Sulphuric acid to form a sweet smelling substance C in making perfumes. a) Identify the compounds A, B and C. b) Write balanced chemical equation to represent the conversion of i. Compound A to compound B. ii. Compound A to compound C. Q3.Give the name of the following: a) An Aldehyde derived from Ethane. b) Ketone derived from Butane. c) The compound obtained by the Oxidation of Ethanol by Chromic anhydride. Q4. Write chemical equations of the reactions of Ethanoic acid with : a) Sodium b) Sodium Carbonate c) Ethanol in the presence of conc. H 2 SO 4. Q5. Give a test to distinguish between: a)ethane and Ethene b) Ethanol with Ethanoic acid. c) Soaps and detergents Q6. Complete the following reactions: a) H 2 C=CH 2 + H 2 O H 2 SO 4 b) HC CH + Br 2 c) C 2 H 5 OH + Na d) CH 3 COOH + C 2 H 5 OH Q7. Two carbon compounds A and B have the molecular formula C 3 H 8 and C 3 H 6 respectively. Which one of the two each most likely to show addition reaction? Justify your answer. Explain with the help of a chemical equation, how an addition is useful in vegetable Ghee industry.

5 Q8. What substance should be oxidised to prepare acetic acid (CH3COOH)? How can ethanol and Ethanoic acid be differentiated? Q9.Write down the difference between soap and detergents. Q10. Alkanes (both alkanes and cycloalkanes) are virtually insoluble in water, but dissolve in organic solvents. However, liquid alkanes are good solvents for many other non-ionic organic compounds. Give reason. Biology On ruled sheets do the worksheet as given below Q1. What is saliva? What are its two important functions? Q2. Small intestine is an ideal place for absorption process to happen in human alimentary canal, why? What all gets absorbed from there? Q3. How would digestion process be affected if pancreatic duct opening in small intestine gets blocked? Q4. How is nutrition in bread mould different from nutrition in tapeworm, give two differences. Q5. Why is pyruvate an important component in cellular respiratory process? Q6. Why is small intestine in herbivores longer than in carnivores? Q7. Leaves of a healthy potted plant were coated with Vaseline. Will this plant remain healthy for long, give reasons for your answer. Q8. What process is helpful in movement of food along the alimentary canal from mouth to oesophagus? Q9. Enlist four differences between an artery and a vein. What is the major difference between pulmonary artery and pulmonary vein? Q10. Where exactly is human heart located and why is it rightly located there? Remember to revise the topics covered Life Processes Biology Syllabus for Periodic Assessment 1(July ) Life Processes Beginning of the chapter till respiration in humans. Social Science Topics and Themes for Project Work on Disaster Management (To be forwarded to CBSE as internal assessment in Social Sciences) Do any one of the following: Project 1: Role of govt. /Non-govt. functionaries in your locality in Disaster Management Interview any two of the govt. /Non-govt. functionaries in your locality on their role in Disaster Management 1. Senior District Magistrate 2. Additional District Magistrate 3. Sarpanch /MP/MLA 4. Head of any NGO working in your locality dealing in disaster management. 5. Police Inspector, Superintendent of police 6. Civil Defence Warden/elected representatives 7. Home Guard Personnel 8. NCC Commandant in the school 9. Deputy Commissioner of municipality

6 10. School Principal OR Carry out a survey in your locality by enquiring from at least 20 persons from different walks of life in your locality or school on the areas in Disaster Management and preparedness plans developed by them. Prepare a report on the areas where awareness is needed and find out the local resources available to create awareness. Project 2-Manual for Disaster Management Choose to be any authority on Disaster Management, such as a village Sarpanch,District Magistrate, Police Inspector or Fire Services Officer. Formulate laws or rules to be followed in a disaster for the most vulnerable groups Study the available precautions and Rules-Fire Safety. Prepare a manual for your department s officials to follow in an emergency.it should include rules to follow for health, safety, relief availability and distribution, law and order etc. Make separate pages for each. Project 3-Preparation of Models of Disaster Resilient Structures Make layouts of models based on structural improvement in buildings in coastal areas prone to floods/cyclones or in areas prone to earthquake /landslides. You can take help of the class X textbook on Disaster Management, support from qualified engineers who have knowledge on safe construction practices from either the government or private sector and also from academic institutions. Supplement an explanation stating the significance of such as construction pattern. Project 4-Pocket guide on first Aid Prepare a pocket guide on first aid for your school. The first aid pocket guide should contain aid that needs to be given for fractures,poisonings, cuts and burns, heat and cold wave and for other threats that are relevant in that area. The content shared in the guide should be supported with adequate labelled diagrams so as to give a clear and elaborate understanding about the topic. Project 5-Institutional Case Study on Disaster Response Visit a local NGO/Agency like the United Nations,Red Cross/Voluntary youth organisations like Nehru Yuva Kendra(NYKS),National Cadet Corp(NCC),Bharat Scouts and Guides etc. and prepare a case study on how any one of the agencies played a major role in Disaster Response, Significance of their role,action plan, resource planning activities and experiences. Project 6-Communication facilities for Disaster Management There are various means of communication during a disaster like radio/satellite /television clubs and government departments like Indian Meteorological Department etc. Choose any one method of communication from the above and find out how the information is disseminated by them at various levels during disasters. Prepare a report. A visit to All India Radio, Doordarshan, Indian Meteorological department will benefit. Project 7-Preparation of Disaster Contingency Plan Prepare a contingency Plan either for your school or home/community. The plan should be based on an actual survey of your /locality or school. The plan prepared should consist of the following map, inventory of resources available and a seasonal calendar highlighting the seasons prone to various hazards prevalent in that locality/school. A School map A resource map

7 A Vulnerability map on the outline map of your locality Local area maps can be procured from BDO office. Project should be developed and presented in this order Cover page showing project title, schools name, student s name, class and section and academic session(year) List of contents with page number (approx...15 pages) Acknowledgements: Acknowledging institution, offices and libraries visited and people who have helped. Project Overview: Purpose, aim, methodology and experience while doing the project Chapters with relevant headings. Summary and conclusions based on findings. Bibliography should have the title, pages referred, author, publisher,year of publication and if a website, the name of the website with a specific link which have been used. Teacher s evaluation report NOTE: Only eco-friendly material to be used SOCIAL STUDIES PROJECT FOR CLASS X ( ) Total marks allotted for the project are 5, which includes theory as well as viva or written test for content assimilation. The distribution of marks over different aspects relating to Project Work is as follows: 1. Content accuracy and originality -1mark 2. Presentation and creativity -1mark 3. Process of Project Completion: Initiative, cooperativeness, participation and punctuality- 1mark. 4. Viva or written test for content assimilation- 2mks PROJECT EVALUATION PERFORMA (The Performa should be attached on the last page of the project.) School s Name Address Student s Name Roll. No Class Section Teacher Assessment 1. Content accuracy and originality 2. Presentation and creativity 3. Process of project competition 4. Viva voce 5. Overall remarks: 6. Teacher signature:

8 Date: 7. School stamp:

KENDRIYA VIDYALAYA, NAD KARANJA HOLIDAY HOMEWORK- WINTER BREAK STD: X SECTION: A,B,C

KENDRIYA VIDYALAYA, NAD KARANJA HOLIDAY HOMEWORK- WINTER BREAK 2018-19 STD: X SECTION: A,B,C GENERAL INSTRUCTIONS 1) Attempt all questions Answer the following questions in 120-150 words. 1. What role