While preparing the assignments, keep in mind following points :

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1 Dear Students, Wishing you a happy and blessed summer time! You are the torch bearers of change. Put in your sincere efforts and do some unique and creative work for the society. The tiny efforts of each soul are the remarks of gratitude to Nature. The entire team of LKSEC teachers has put all will and might in designing The Holiday Assignment, where certain aspects are kept in mind like use of technology, wise use of paper and resources from surroundings. Put your shoulder to the wheel in making the projects creative, attractive and cost effective with appropriate information. While preparing the assignments, keep in mind following points : 1. All the assignments should be original. 2. Use technology wisely and correctly. 3. Values and virtues bring enrichment in bonds among members of the family. So, as a piece of advice, involve your parents in the process. 4. Use poster colours, sketch pens etc. 5. Grammatical accuracy also carries weightage. 6. Sincere and honest efforts will be appreciated. Make this summer special, innovative and enthralling. Educationally Yours, RC Joshi Principal PAGE : 1 of 8

2 Holiday Assignment : Summer Vacation 2017 Class X General Instructions : 1. You have to write the assignments of all subjects in ONE NOTEBOOK 2. If you have to Write / Draw an assignment in Particular Subject on a separate sheet then stick the sheet in the NOTEBOOK 3. Mention your I.D. No., Name, Class, Section and Subject on separately used SHEET 4. Your presentation of the Assignments must be upto the mark Subject : ENGLISH 1. Read any fable in which animals are playing the characters of human beings. Write the script of this story. Your script should have dialogues, narration of stage directions etc., so that it could also be enacted on stage later. 2. Prepare a project file on Education for a Girl Child. Why is it important to give education to girl child? Also write about the main cause for female illiteracy in India. TASK1 : Match the following columns. Subject : MATHEMATICS COLUMN 1 COLUMN 2 (i) The decimal expression of rational number is (ii) The decimal expression of irrational number is (iii) A collection of rational and irrational numbers (iv) Sum of rational and irrational number is (v) Sum and product of irrational numbers may be (a) non-terminating, non-repeating (b) terminating or non-terminating, repeating (c) rational (d) real number (e) irrational Vocabulary Quiz Directions: Match the vocabulary words on the left with the definitions on the right. (i) Real numbers (ii) Conjecture (iii) Lemma (iv) Algorithm PAGE : 2 of 8 (a) a statement made by observing a pattern based on some particular cases in the hope that it is true in all cases. (b) a proven statement used for proving another statement. (c) the collection of all rational and irrational numbers (d) given positive integers a and b, there exist unique integers q and r satisfying a = bq + r, o r< b.

3 (v) Euclid division lemma (vii) L.C.M (viii) Fundamental theorem of arithmetic (e) Every composite number can be factorised as a product of primes, and this factorisation is unique apart from its order. (g) largest number that divides the given numbers. (h) a series of well-defined steps which gives a procedure for solving a type of problem. TASK 2 : POLYNOMIALS 1) If two zeros of polynomial x 3 + bx 2 + cx + d are 2+ 3 and 2-3, find its third zero. 2) If α and β are the zeros of polynomial x 2 - x - 6, find a polynomial whose zeros are 2α+2 and 2β+2. 3) If α and β are the zeros of quadratic polynomial x 2-5x + 1, find the value of α 3 + β 3 4) Find the zeros of the polynomial f(x) = x 3-9x x - 24, if it is given that sum of its two zeros is 5. 5) Find the zeros of the polynomial f(x) = x 3-3x 2-16x + 48, if it is given that two of its zeros are equal in magnitude but opposite in sign. Subject : HINDI 1. d{kk esa fgunh fo"k; dks jkspd rjhds ls dsls i<+k;k tk,a bl lanhkz esa vius fopkj vksj lq>ko nsrs gq, viuh&viuh d{kk ds fgunh&v/;kid ds uke i= fy[kdj fo ky; ds irs ij *LihM&iksLV* }kjk HkstsaA rri'pkr~ okil vkrs le; LihM&iksLV dh jlhn vo ; lkfk yk, A vpns lq>koksa dks fø;kfuor rfkk Js"B i=ksa dks iqjlñr fd;k tk,xka 2.vius fo ky; dh fo ks"krkvksa dks crkrs gq, 5** 7** bap dk,d fokkiu rs;kj dhft,a Js"B fokkiuksa dks fo ky; esa iznf kzr fd;k tk,xka I Chemistry Subject : SCIENCE 1. Corrosion process is a redox reactionwhich occurs when surface of metal is exposed to the atmosphere. Corrosion of metals leads to the weakening of the strength of metals and metals become brittle. Enormous money is spent every year to replace the metals and metal containing articles damaged by corrosion. a) What are the conditions necessary for the occurrence of corrosion? b) Is corrosion a spontaneous or non spontaneous process? c) Is rusting a corrosion process?give reasons. d) How is corrosion prevented? e) Collect the pictures of some monuments that have accrued beautiful colours due tocorrosion. f) Write a short note on iron pillar of Delhi PAGE : 3 of 8

4 II Physics a) Write and draw the rules for the image formation by concave mirror and convex mirror b) Draw all the possible ray diagrams to form an image by the concave mirror and convex mirror separately for the various positions of the object. III Biology 1. In separate sheets draw labeled and colourful diagrams of the following: (a) Open and closed stomata (b) Flow diagram showing mechanism of photosynthesis. (c) Phagocytosis in amoeba. (d) Human digestive system. (e) Human respiratory system. 2. Complete the following chart by filling appropriate words in the blank spaces. Name of the gland secretion Site of action Enzyme Nutrient acts upon End product 1 Saliva Buccal cavity 2 Starch Maltose Gastric glands Gastric juice 3 Pepsin 4 Peptones and peptides Liver Bile Juice 5 No enzyme Fats 6 Pancreas Pancreatic Juice 7 Amylase Trypsin 8 Starch Proteins Fats Maltose Peptones and peptides Fatty acids and glycerol Intestinal glands Intestinal juice Small intestine Erepsin Maltase 9 Lactase Lipase Peptones and peptides Maltose Sucrose Lactose Triglycerides 10 Glucose Glucose Glucose Monoglycerides and fatty acids PAGE : 4 of 8

5 Subject : SOCIAL SCIENCE I History Prepare a project file on the following details. 1- If you had to join a political party in India, today which one would be suitable for you and why? What would be your manifesto? PAGE : 5 of 8

6 II Geography Collect newspaper cuttings from 15 th May 2017 to 15 th June 2017, on the topics related to Resource Crises and their implication on the environment all over the earth and paste them in your Holiday Assignment/Scrap Book. III Economics Calculate B.M.I. (Body Mass Index) of at least five persons of your family / in your locality and comment on the finding. PAGE : 6 of 8

The small intestine THE DUODENUM

4. The digestive system 4.2 The stages of digestion 4.2.7 The small intestine THE DUODENUM The duodenum is the first segment of the small intestine. It is an important segment because it receives pancreatic