HOLIDAY HOMEWORK SUMMER BREAK (12 /05/ /06/ 2017)

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1 CLASS 12 TH COMMERCE SUBJECT: ACCOUNTANCY HOLIDAY HOMEWORK SUMMER BREAK (12 /05/ /06/ 2017) 1. MAKE A PROJECT ON COMPREHENSIVE PROBLEM OF ANY EXISTING COMPANY. IT MUST INCLUDE: A. MAKING JOURNAL ENTRIES AND SUBSIDIARY BOOKS B. LEDGER ACCOUNTS C. TRIAL BALANCE D. TRADING AND PROFIT AND LOSS ACCOUNT E. BALANCE SHEET 2. THOUROUGHLY LEARN THE CHAPTERS & PRACTICE NUMERICAL QUESTIONS: A. ACCOUNTING FOR PARTNERSHIP FIRMS : FUNDAMENTALS B. CHANGE IN PROFIT SHARING RATIO C. ADMISSION PF A PARTNER 3. DAILY LEARN A SINGLE CONCEPT FROM EACH CHAPTER THROUGHLY AND DO ATLEAST TWO TYPICAL NUMERICALS IN HOLIDAY HOMEWORK FOR ATLEAST 25 DAYS. 4. DO THE NUMERICAL QUESTIONS OF ADMISSION OF A PARTNER IN YOUR HOMEWORK COPY. MAMTA RANI (PGT COMMERCE) ENGLISH HOLIDAY HOMEWORK FOR CLASSES XII Q1) Design a poster to promote the importance of SAVING WATER

2 Q2) Write an article on any one of the topics: ( Words) GOODS AND SERVICES TAX BILL Or DEMONETIZATION Q3) Read first five chapters of the novel The Invisible Man and write a brief character sketch of the following characters: a) Mrs Hall b) Invisible Man Q4) Draft an advertisement for the following: a) Sale of household items b) To-Let Q5) With reference to the poem My Mother at Sixty Six, compare the world inside and outside the car. (30-40 words) Q6) Karam & God given lineage tell the sad/sordid picture of the stigma of caste and religion that rules the poor people of India. Explain with reference to the lesson Lost Spring ( words) Q7) What surprises awaited Franz as he entered his classroom? Discuss with reference to The Last Lesson (30-40 words) Q8) In a recent Landmark Judgment by honorable Supreme Court of India, it was observerd The statistics of National Crime Records Bureau, which I have indicated in the beginning of my judgment show that despite the progress made by women in education and in various fields and changes brought in ideas of women s rights, respect for women is on the decline and crimes against women are on the increase. Offences against women are not a women s issue alone but a human rights issue. Based on the view expressed above and your own views, write a report for the school magazine on the topic: (word limit -125 words) SOCIAL SECURITY OF WOMEN---NEED OF THE HOUR You can also take hints from below Changing the mindset of people Strict laws and implementation Dowry system and Domestic Violence Female Infanticide BUSINESS STUDIES {CLASS XII COMMERCE}

3 1. PROJECT 10 MARKS TOPICS A. PRINCIPLES OF MANAGEMENT B. BUSINESS ENVIRONMENT 2. EVERY ASSIGMENT 5 QUESTIONS A. 2 QUESTION FOR 1 MARK B. 2 QUESTION FOR 3 MARKS C. 1 QUESTION FOR 6 MARK D. 1 CASE STUDY 3. TOPICS I. NATURE AND SIGNIFICANCE OF MANAGEMENT II. PRINCIPLES OF MANAGEMENT III. MANAGEMENT AND BUSINESS ENVIRONMENT 4. REFERENCE BOOKS A. POONAM GANDHI B.NCERT ECONOMICS 1. Learn all the chapters done till now ie 11 may Attempt the following questions Q1 Explain all three central problems faced by an economy. Q2 what is PPC? State its properties. Q3 why is MOC increasing? Q4 Explain the law of Diminishing Marginal Utility with schedule and diagram. Q5 how consumer reaches equilibrium in case of single commodity. Q6 Explain consumer equilibrium in case of two commodities using utility approach. Q7 Discuss properties of indifference curve. Q8 explain consumer equilibrium using indifference curve approach.

4 Q9 state law of Demand with the help of schedule. Q10 why is Demand curve downward sloping? Q11 Distinguish between a) normal and inferior goods b) change in quantity demanded and change in demand Q12 Explain any four factors affecting elasticity of demand. 3. Attempt atleast 20 numerical question on elasticity of demand. 4. Study last 5 years board question paper and attempt questions for the chapter covered in the class. INFORMATICS PRACTICES NETWORKING & OSS DO FOLLOWING QUESTIONS IN HW NOTEBOOK 1. What do you understand by the term Network? What are its advantages? 2. Define Node, Server, NIU, IP Address, Domain Name and MAC address. 3. What are the different types of Networks? 4. Differentiate between (a) LAN & MAN (b) WAN & MAN. 5. What are the functions of different network devices Hub, Switch, Repeaters, Bridges, Gateways and Modem? 6. Explain different Network Topologies. 7. What is NIC? 8. What is meant by Communication Channel and explain the basic types of Communication Channel available? 9. Compare the characteristics of transmission using radio link, satellite link, microwaves? 10. How can you prevent counter threats of Network Security? 11. What is a firewall? 12. What is Cyber Law and what is its importance? 13. What is OSS and what are its features? 14. What is FLOSS? 15. What are Proprietary Softwares? 16. What are freeware and Shareware softwares? 17. What is Ogg Vorbis?

5 18. Differentiate between Phonetic and Key-map based Entry of Indian Language Text. 19. What is ASCII and ISCII? 20. Expand the following terms: OSS, ODF, FLOSS, TCP/IP, FSF, W3C, HTTP, FTP, SMTP, PPP, WLL, CDMA, GSM. MYSQL 1. Revise the Chapter - Revision Tour of MySQL. 2. Revise the Chapter Advanced MySQL. 3. Do the exercise and Lab Exercise of RDBMS Concepts. 4. Download CBSE QP of years , , and do the questions 3, 5 & 6 of each QP. 1. ग द न (उपन य स) ग र ष मक ल न अवक श ग ह क र य 2. प र मच द क एक ककस कह न क सम क ष 3. ससल वर व ड ग क सम क ष 1. प.व सस ध फ चर ल खन(150 शब द) ननब ध ल खन(200 शब द) 1. वन रह ग-हम रह ग 2. म र ज वन लक ष य 3. भ रत क स म जजक समस य ए 4. वततम न भ रत क नव ननम तण म महहल ओ क य गद न 5. म ब इल - सक र त मक एवम नक र त मक पक ष

6 MATHS 1. How many relations are possible from a set A of n elements to another set of m elements? 2. If f (x) = x+7 and g (x) = x -7, x R find ( fog ) (7) 3. Let * be a binary operation on N given by a * b HCF( a, b), a, b N write the value of22*4. 4. Let * be a binary operation defined by a* b=2a+b-3 find 3*4 5. Let * be a binary operation defined by x * y = x y find (5 * 3)* 1 6. Let f(x)= x 2 and g(x) = Sin3x find fog and gof 7. If A={3,4,5,6} and B={1,3,6} and R= { (a,b) A B:a > b} Find R. 8. Let *be a binary operation on N given by a * b = L.C.M (a, b) find 2 * Give an example of a relation on A={1,2,3,4}, which is Symmetric but neither reflexive nor transitive 1 f ( 1, a), (2, c), (3, b) find f. 10. Let the function 11. Find the Identity element in the set Q + of all positive rational numbers for the operation* defined by a * b = ab/2 a,b Q Show that the Relation R in R defined as R={(a,b):a b} is reflexive and transitive but not symmetric. 13. Show that the relation R in the Set {1,2,3} given by R={(1,2),(2,1)} is symmetric but neither reflexive nor transitive. 14. If f(x) is an invertible function, find the inverse of f(x) = 3x Discuss the commutavity and associativity of the binary operation on R defined bya b =ab/4 a,b R 16. Prove that the relation R in the set A = { 1,2,3,4,5 } given by R = { a, b : a b is even}, is an equivalence relation. 17. Show that the relation R defined by R {( a, b) : a b is divisible by 3: a, b N} is an equivalence relation. 18. Let P be the set of all point in a plane and the relation R in set P be defined as R ( A B) P P : distance between points A and B is less than 3 units. Show that the relation R is not an equivalence relation. 19. Show that the function f : R o R o, defined as f(x) = 1/x, is one one onto where R o is the setof all non zero real numbers. 20. Check the surjectivity of the function f : Z Z given by f(x) = x..

7 21. Show that the function f : R R defined by f ( x) 4x 3 is Invertible. Find the Inverse of f. 22. Find the identity element for the binary operation in set A N N given by ( a, b) *( c, d) ( a c, b d) for ( a, b),( c, d) N N.Show that* iscommutative and associative. 23. Show that binary operationa *b a b - 4, a,b R is associative. Also find its Identity element and inverse of an element. 24. Show that the relation R on NN defined by(a,b) R(c,d) a+d=b+c is an equivalence relation. 25. In N N, show that the relation defined by (a,b)r(c,d)<=>ad=bc is an equivalence relation Prove that the function f : N N defined by f(x) = x 2 +x+1 is one one but not onto. 26.Consider f : [ 5, ) R given by f ( x) 9x 2 6x 5 show that f is invertible. Find the inverse of f. 27.Let f : NR be a function defined as f(x)= 4x x +15, show that f: NS, where S is the range of f, is invertible. Find the inverse of f if A= [ 1 4 0], show that A 2 7A + 10I = Find the number x and y such that A 2 + xa + yi = 0. Where A=[ ] 30 For A=[ 1 a 0 1 ], show that Am = [ 1 ma ], for all positive integers m n 1 3 n 1 3 n if A = [ 1 1 1], then show that A n = [ 3 n 1 3 n 1 3 n 1 ],for all positive integers n n 1 3 n 1 3 n if A=[ 5 7 9], B= [ 1 2 0], verify that (AB) T = B T A T Express the matrix A=[ ] as the sum of a symmetric and skew symmetric matrix if A=[ 6 0 8], B=[ 1 0 2], C=[ 2], verify (A + B)C = AC + BC find the matrix X so that X [ ] = [ ] 36. Find the inverse of the following matrix by using elementary row operation (I) [ 2 0 1] (ii) [ 3 0 1] (iii) [ ] (iv) [ 4 0 2] (v) [ 1 2 3]

8 37. Using properties of determinants, prove that 1 + a 2 b 2 2ab 2b 38. 2ab 1 a 2 + b 2 2a = (1 + a 2 + b 2 ) 3 2b 2a 1 a 2 b Using the properties of determinants, prove that: x x px y y py 3 = (1 + pxyz)(x y)(y z)(z x) z z pz x 11 3x 7 x 41. Solve for x: = (a 2 + b 2 )/c c c 42. Solve for x: a (b 2 + c 2 )/a a = 4abc b b (c 2 + a 2 )/b a 2 b 2 c 2 a 2 b 2 c Prove that (a + 1) 2 (b + 1) 2 (c + 1) 2 = 4 a b c (a 1) 2 (b 1) 2 (c 1) cos(β α) cos(γ α) 44.. Prove that: cos(α β) 1 cos(γ β) = 0 cos(α γ) cos(β γ) A= [ 3 2 4] find A -1.. Using A -1 solve the system of equations :- 2x-3y+5z=11, x+2y-4z=-5 and x+ y 2z = Solve the system of equations: 2 x + 3 y + 10 z = 4, 4 x 6 y + 5 z = 1, 6 x + 9 y 20 z = The sum of three numbers is 6.If we multiply third number by 3 and add second number to it,we get 11.By adding first and third numbers we get double of the second number. Represent it algebraically and find the numbers using matrix method. 48. The cost of 4 chocolates,3 samosas and 2 apples is Rs 60.The cost of 2 chocolates,4 samosas and 6 apples is Rs.90.The cost of 6 chocolates,2 samosas and 3 apples is Rs. 70.Find the cost of each item by matrix method. What do you think is the healthiest diet? Suggest an item that could replace samosa to make the diet healthier. 49. Using matrix method,solve the system of equation x+2y+z,x-y+z=4,x+3y+2z=10.if x represents the number of persons who take food at home, y represents the number of persons who take junk food in market and z represent the number of persons who take food at hotel. Which way of eating food you prefer and why? 50. There are three families, first family consists of 2 male members,4 female members and 3 children. Second family consists of 3 male members,3 female members and 2 children. Third family consists of 2 male members, 2 female members and 5 children. Male member earns Rs

9 500 per day and spends Rs 300 per day. Female member earns earns Rs 400 per day and spends Rs 250 per day. Child member spends Rs 40 per day. Find the money each family saves per day using matrices. What is the necessity of saving in the family? 51. Three shopkeepers A, B and C are using polythene, handmade bags (prepared by persons) and newspapers envelopes as carry bags. It is found that the shopkeepers A,B,C are using(20,30,40),(30,40,20),(40,20,30) polythene,handmade bags and newspapers envelopes respectively. The shopkeepers A, B,C spent Rs 250,Rs 220 and Rs 200 on these carry bags respectively. Find the cost of each carry bags using matrices. Keeping in mind the social and environmental conditions, which shopkeeper is better and why? 52. Ina legislative assembly election, a political party hired a public relation firm to promote its candidate in three ways; telephone, house calls and letters. The numbers of contacts of each type in three cities A,B and C are (500,1000,5000),(3000,1000,10000) and (2000,1500,4000) respectively. The party paid Rs.3700,Rs 7200 and Rs in cities A,B and C respectively. Find the costs per contact using matrix method keeping in mind the economic condition of the country. 53. In a survey of 25 richest person of three localities x, y,z. It is found that in locality A 7 believes in honesty,12 in hard work and 6 in unfair means. While in Y 10 believes in honesty 11 in hard work, 4 in unfair means and in Z, 8 believes in honesty,12 in hard work 5 in unfair means. If the income of 25 richest persons of locality x, y and z are respectively Rs.1,19,000,Rs.1,18,0001,18,000per day then find income of each type of person by matrix method. In your view which type of person is better for society and for nation. 54. Three friends A,B and C visited the reliance fresh to purchase fruits. A purchased 2kg apples,1 kg grapes and 3 kg of oranges; B purchased 3kg apples,2 kg grapes and 1kg oranges; C purchased 4 kg apples, 3 kg grapes and 2kg oranges, the amount paid by them are respectively Rs.440,Rs.410and Rs.620. Find the cost of 1 kg of each fruit using matrix multiplication. Why we take fruits in our diet Given that A=[ 2 3 4] and B=[ 4 2 4] find AB.Use this to solve the following system of equations.x-y=3,2x+3y+4z=17,y+2z Given that A=[ ] and B= [ 1 2 2] Find AB. Use this to solve the following system of equations If A= [ 2 1 3] find A -1 and hence solve the system of equations x+2y+z=4, -x+y+z=0, x-3y+z = An amount of Rs.5000 is put into three investments at the rate of interest of 6%,7% and 8% per annum respectively. The total annual income is Rs.358. If the combined income from the first two investments is Rs.70 more than the income from the third, Find the the amount of each investment by matrix method. 59. A school wants to award its students for the values of honesty,regularity and hardwork with a total cash award of Rs Three times the award money for hard work with a total cash award of Rs.6000.Three times the award money for hardwork added to that given for honesty amounts to Rs The award money given for honesty and hard work together is double the

10 one given for regularity. Represent the above situation algebraically and find the award for each value using matrix method. Apart from these values namely honesty,regularity and hard work suggest one more value which the school must include for awards. 60. For keeping fit X people believes in morning walk, Y people believe in Yoga and Z people join Gym. Total number of people is 70, further 20%, 30% and 40% people are suffering from any disease who believe in morning walk, Yoga and Gym respectively. Total number of such people is 21. If morning walk costs Rs.0, Yoga costs Rs.500 per month and gym cost Rs.400 per month and total expenditure is Rs.23,000. (1) Formulate a matrix problem. (2) Calculate the number of each type of people. (3) Why exercise is important for health. 61. An amount of Rs.600 crores is spend by the government in three schemes. Scheme A is for saving girl child from the cruel parents who don t want girl child and get the abortion before her birth. Scheme B is for saving of newly wed girls from death due to dowry. Scheme C is planning for good health for senior citizen. Now twice the amount spent on scheme C together with amount spent on scheme A is Rs.700 Crores.And three times the amount spent on scheme A together with amount spent on scheme B and scheme C is Rs.1200 Crores. Find the amount spent on each scheme using matrices. What is importance of saving girl child from the cruel parents who don t want girl child and get the abortion before her birth. 62. Two schools A & B want to award their selected teachers on the values of honesty, hardwork and regularity. The school A wants to award Rs. x each, Rs.y each and Rs. Z each for three respective values to 3,2and 1 teachers with a total award money of Rs.1.28 lakhs. School B wants to spend Rs.1.54 lakhs lakhs to award its 4, 1 and 3 teachers on the respective values (by giving the same award money for the three values as before). If the total amount of award for one prize on each value is Rs.57,000 using matrices find the award money for each value.

SUMMER HOLIDAY HOME WORK To develop reading. skills. Practice for section B Writing skills Creative skills

SUMMER HOLIDAY HOME WORK To develop reading. skills. Practice for section B Writing skills Creative skills CLASS: XII KENDRIYA VIDYALAYA SANGATHAN, CHENNAI REGION SUMMER HOLIDAY HOME WORK 2018-19 S.NO TOPIC LEARNING OBJECTIVES Resource file a. Collect 3 articles and paste every To develop reading week skills