WORKSHEETS OF CLASS XI- WINTER VACATIONS-2017 WORKSHEET I. Q1. Define, Stress, Strain and Youngs Modulus of Elasticity for a solid.

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1 WORKSHEETS OF CLASS XI- WINTER VACATIONS-2017 WORKSHEET I Q1. Define, Stress, Strain and Youngs Modulus of Elasticity for a solid. Q2. A steel wire of length 4 m and diameter 5mm is stretched by 5kg-wt. Find the increase in its length, If the Youngs modulus of steel wire is 2.4 x dyne/ cm 2. Q3. The ratio of radii of two wires of the same material is 2 : 1. If these wires are stretched by equal Force, find the ratio of stresses produced in them. Q4. Define youngs modulus of Elasticity, Bulk modulus and Modulus of Rigidity. Q5. A 5 cm cube has its upper face displaced by 0.2 cm by a tangential force of 8 N. Calculate the Shear- -ing Strain, Shearing Stress and Modulus of Rigidity of the material of the wire.

2 WORKSHEET II Q6.Why are the Bridges declared unsafe after long use? Q7.Define Force of Cohesion, Force of Adhesion and Surface Tension of a liquid. Q8.Give reason, why a water drop spreads on a glass surface and a mercury drop do not soread. Q9. Define Surface Energy of a liquid. Why does oil spread on the surface of water? Q10.A rectangular film of liquid is extended from 5cm x 3cm to 6cm x 5cm. If the work done is 3 x10-4 J. Find the Surface tension of the liquid. Q11. Why there is Excess of Pressure on Curved Surface of the liquids? Q12. Define Angle of Contact and write any two factors on which the angle of contact depends.

3 WORKSHEET III Q13.Define Capillarity. Write the formula for liquid rise in the capillarity tube. Q14. How does detergent helps to clean the dirty clothes? Q15. Give reason : (a) Farmers plough their fields after the rains. (b) Hot soup is more tastier than the cold soup. Q16. State and prove the Law of Continuity. Q17. What is Venturimeter? Where it is used? Q18.Explain, why deep water runs calm? Q19. Define Magnus Effect. Explain how it is used in spinning of a cricket ball? Q20. How is the liquid flowing in a non uniform streamlined tube related to the velocity of flow Of the liquid, Area of cross-section of the tube and the pressure inside the tube?

4 Home Science Worksheet 1 Class XI Q1. Answer briefly each of the following: (i) Mention any two reasons for cooking food. (ii) Discuss any two changes that occur in starch during food preparation. (iii) Explain the term Empty Calories (iv) Mention any two psychological changes that occur during adolescene (v) How do peers influence an adolescent?.

5 Home Science Worksheet 2 Class XI Q1 Advertisements an important medium to reach product information to the masses. List one negative and one positive influence it has on consumer.. Q2 Name the vitamins lost during cooking. Q3 Budget play an important role in food selection. Explain... Q4 What is meal planning?

6 Home Science Worksheet 3 Class XI Q1.Write the role of endocrine glands in the physical maturity of adolescents. Q2 What is the importance of hygiene during the process of development of sexual characteristics in adolescents? Q3 Write the latest methods for cooking food.... Q4 Explain the Importance of cooking... Q5 Write the factors of meal planning..

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8 ?kjckj u gksrkaa izkphu dky ls gh o`{kks a dk cgqr egro gsa ihiy] rqylh vkfn o`{kksa dh iwtk vkt Hkh ns[kh tk ldrh gsa uhe ds o`{k dh mi;ksfxrk ls rks vkt lhkh ifjfpr gsa vkt euq"; vius LokFkZ es a vu/kk gksdj ouksa dk dvku djrk tk jgk gs ftlls Hkw{kj.k,oe~ ok;q iznw"k.k tslh lel;k,a mb [km+h gqbz gsa okrkoj.k esa v'kqf) vk tkus ls vusd O;kf/;ksa us?kj dj fy;k gsa tyok;q es a uhjlrk o 'kq"drk vk xbz gsa izd`fr gels :B xbz yxrh gs rhkh rks dgha ck<+] dgha lw[kk rks dgha HkwdEi ds :i esa viuk Øks/k fn[kk jgh gsa vr% gesa lpsr gksus dh vko';drk gsa Hkkjr ljdkj us lu~ 1950 ls ou egksrlo dh ;kstuk dk vkjehk fd;k ysfdu ekuo dh psruk ds vhkko es a o`{kkjksi.k dk;z lqy ugha gks ldka gj Hkkjroklh dks ouksa ds laj{k.k,oa o`f) es a lg;ksx nsuk pkfg,a viuh vko';drk gsrq ;fn ge o`{k dkvsa rks mrus gh yxk,a Hkh rhkh ge egkekjh o izd`fr ds dksi ls cp ldrs gsaa 1- i;kzoj.k laj{k.k es a ouksa dk D;k ;ksxnku gs \ HkwL[kyu,oa ok;qiznw"k.k tslh lel;kvksa ls dsls fuivk tk ldrk gs \

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10 ou gekjs fe= gs] dsls \ bl fo"k; ij,d laf{kir fucu/k fyf[k,a

11

12 jktk jkeeksgu jkw; vdkneh x`g dk;z 2017 d{kk & 11 & fgunh ¼odZ khv 2½ Ukke & d{kk,oe~ oxz & Izk u & fueufyf[kr okd;ksa dks 'kq) djds fyf[k,a 1- mldk izk.k fudy x;k A - 2- tks ym+dksa us ifjje fd;k os lqy gks x,a - 3- jes'k vksj ujs'k tk jgk gsa - 4- izr;sd O;fDr viuk dke dhft,a - 5- jes'k ijh{kkqy dh burtkj dj gsa - 6- d`i;k djds vius&vius LFkku ij csfb,a - 7- rqegsa rqegkjs dke esa :fp ysuh pkfg,a - 8-,d Qwyksa dh ekyk nsuka - 9- esjs ekrk th fnyyh ls vk, gsaa rsjs dks rks esa {kek ugha d:axka ge vhkh [kkuk ugha [kk,xka

13 - 12- dksu ym+dk vk jgk gs \ esa dqn ik p feuv esa vkå xka dksbz yksx x;s] dksbz vk;sa esa dksbz vksj nqdku ij pyk tkå xka mu ym+ds dk nkslr vk, gsaa tks febkb;k ilun gksa mugsa vki ys yksa njokts ij dqn yksx [km+k gsa gj,d dezpkjh vius fohkkx es a tkrs vksj viuk dke lahkkyrsa og fo}ku ymdh gsa -

14 jktk jkeeksgu jkw; vdkneh khr dkyhu x`g dk;z 2017 d{kk & 11 & fgunh ¼odZ khv 3½ Ukke & d{kk,oe~ oxz & Izk u & fueufyf[kr egkojksa dks okd; es a iz;ksx dhft,a 1- vax&vax <hyk gksuka - 2- v xwbk fn[kkuka - 3- vfm;y VV~VwA - 4- vxj&exj djuka - 5- vdy ekjh tkuka - 6- vius ikao ij dqygkmh ekjuka - 7- viuk myyw lh/kk djuka - 8- va/ks dh ykbha - 9- viuk lk eqag ysdj jg tkuka

15 - 10- va/ksjs?kj dk mtkyka vaxkjs mxyuka vaxkjksa ij isj j[kuka vdy ds?kksm+s nksmkuka viuh f[kpm+h vyx idkuka vius eqag fe;ka fevbw cuuka vax&vax eqldjkuka vklrhu dk lk ia vk p u vkus nsuka vk [k [kqyuka vk [ks cun gksuka -

16 Ques.1 What is Ostwalds Dilution Law. RAJA RAM MOHAN ROY ACADEMY WINTER HOLIDAY HOMEWORK CLASS XI SUBJECT CHEMISTRY WORKSHEET 1 Ques.2 What is a buffer solution. Write the mechanism of the buffer action. Ques.3 What is commom ion effect. State its application in group analysis. Ques.4 Calculate ph of 0.05 M sulphuric acid solution. Ques.5 Explain why a solution of copper chloride is acidic while that of sodium chloride is neutral.

17 RAJA RAM MOHAN ROY ACADEMY WINTER HOLIDAY HOMEWORK CLASS XI SUBJECT CHEMISTRY WORKSHEET 2 Ques.1 Draw all possible isomers of C 4 H 10 O. Ques.2 State two conditions necessary for a compound to show optical isomerism. Ques.3 Write the mechanism of SN1 reaction. Ques.4 What is first law of thermodynamics.

18 Ques.5 What is the meaning of oxidation and reduction reaction. Ques.6 State two types of hydrogen bonding.

19 RAJA RAM MOHAN ROY ACADEMY WINTER HOLIDAY HOMEWORK CLASS XI SUBJECT CHEMISTRY WORKSHEET 3 Ques.1 Define the principle of precipitation. Ques.2 The solubility product of BaSO 4 is 1.5 * Calculate its solubility in pure water. Ques.3 State four postulates of Bohrs atomic model. Ques.4 Define: a) Avagrado s law b)grahams law of diffusion. Ques.5 Calculate the average velocity of CO 2 molecule at STP.

20 CLASS XI COMPUTER APPLICATION WORK SHEET 1 Name:- Class :- XI Section:- Q1. Give minimum two differences between the following. ( Give example for part a) a. append( ) function and concat( ) Function append( ) function concat( ) Function b. charat( ) and setcharat( ) charat( ) Function setcharat( ) Function c. String and StringBuffer String StringBuffer Q2. What is Array? Explain types of arrays Q3. Input a sentence from the user and count the number of times, the words an and and are present in the sentence. Design a class Frequency using the description given below: Class name : Frequency Data members/instance variables :

21 Text : To store the sentence. countand : to store frequency of the word and countan : to store frequency of the word an len : to store length of the string. Member functions: Frequency ( ) : constructor to initialize the instant variables void accept( String n ) : to assign n to text, ehere the value of the parameter n should be in lower case. void checkandfreq( ) : to count frequency of the word and. void checkanfreq( ) : to count frequency of the word an. Void display( ) : to display number of and and an with appropriate messages. Specify the class Frequency giving details of constructor( ), void accept( String n ), void checkandfreq( ), void checkanfreq( ) and void display( ). Also define the main( ) function to create an object and call methods accordingly to enable the task. Q4. Class Arrange contains an array of 100 integer. Some of the member function/ methods of class Arrange are given below: Class Name Data members/instance variables: Num[ ] Member functions/methods: Arrange( ) void readlist( ) void displaylist( ) void selectionsort() selection sort Arrange an array of 100 integers constructor to input 100 integers to display the list of integers sorts the array in ascending order using method Specify the class Arrange giving the details of the constructor and the function void display list(), void selectionsort( ). You assume that the other function are written for you. You do not need to write the main function. CLASS XI COMPUTER APPLICATION WORK SHEET 2 Name:- Class :- XI Section:- Q1. Name the logic gate for the following circuit diagram and draw the truth table. A B

22 Q2. The following is a part of some class which computes and returns the greatest common divisor of any two numbers. There are some places in the code marled by?1?,?2?,?3?,?4? and?5? whisch must be replaced by the function works correctly. int gcd( int a, int b) { int r, while (?1? ) { r =?2? ; b =?3? ; a =?4? ; } if (a = = 0) return?5?; else return - 1; } i. What is the expression or statement at?1? ii. What is the expression or statement at?2? iii. What is the expression or statement at?3? iv. What is the expression or statement at?4? v. What is the expression or statement at?5? Q3. State Demorgans s Law. Disorganize the following :- ( A + C ). ( B + C ) Q4. Verify using truth table if : (A XNOR B XNOR C) = ( A XOR B XOR C)

23 Q5. Show with the help of diagram how an AND gate can be formed with the NOR gate.

24 CLASS XI COMPUTER APPLICATION WORK SHEET 3 Name:- Class :- XI Section:- Q1 Define Full Adder. Draw the truth table and logic circuit for Full Adder. Q2. A class short Word has been defined with the following details: Class name : SortWord Data members/instance variables : txt : stores the word len : stores the length of the word Member functions: Sort Word( ) : Default constructor void readtxt( ) : to accept the word in lower case void sorttxt( ) : to sort the word in alphabetical order of character using bubble sort technique and display it. void changetxt() : to change the case of vowels in the word to UPPER case (for e.g. school becomes school) void disp() : to display the changed string Specify the class SortWord giving details of constructor, void readtxt( ), void sorttx t( ) and void changtxt( )and void disp(). Also define the main() functionto creat an object and call function accordingly to enable the task.

25 A magic number in which the eventual sum of digits of the number is equal to 1. For example, 172 = = = 1 Then 172 is a magic number. Q3. Design a class Magic to check if a given number is a magic number. Some of the members of the class are given below: Class name : Magic Data members/instance variables : n : stores the number Member function : Magic() : constructor to assign 0to n void getnum(int nn) : to assign the parameter value to the number, n=nn Int Sum_of _digits(int) : returns the sum of all the digits of a number. void ismagic() : checks if the given number is a magic number by calling the function Sum _of _digits (int) and displays appropriate message. Specify the class Magic giving the details of the constructor, void getnum(int), int Sum-of digits(int)and void is magic(). Also define the main function to create an object and call methods accordingly to enable the task.

26 WINTER S HOLIDAY HOME WORK-DEC-JAN 2018 FOR CLASS XI (Mathematics) Instruction :- if the solution is lengthy then it can be solved on another sheet and can be attached to the worksheet. Work sheet no 1 Q :1- Differentiate w. r. t. x (i) y =,. (ii) y =, (iii) cosec (5x + 7 )

27 (iv) Q :2- Differentiate w. r. t. x, (i). 5 (ii) ( (iii). Work sheet no -2 Q :1- The weight of 50 apples were recorded as given below. Calculate the weight to the nearest gram, by step deviation method.

28 Weight in grams Number of apples Q :2- Find the value of p if the mean of the following distribution is 7.5 X F P 8 4 Q :3- The mean of the following frequency distribution is 57.6 and the number of observations is 50. Find the missing frequencies f 1 and f 2. Class frequency 7 f 1 12 f Q:4- Mean of 25 0bservations was found to be But later it was found that 96 was misread as 69. Find the correct mean.

29 Q:5-Find the mean deviation from the mean for the following data : 38,70,48, 40, 42,55, 63,46,54,44 Q:6-Find the variance and standard deviation of the following data : x f Work Sheet no - 3 Q:1-If cot A =, find the value of 3 cos A +5 sin A, where A lies in the first quadrant. Ans Q:2-If cos 120 = find the values of sin 120 and tan 120. Ans- Q:3-Prove that sec (-1680 ). Sin 330 = -1 Ans

30 Q:4-If tan 25 =a, Prove that =. Ans- Q:5- Prove that = 2 sec θ. Ans- Q:6- Show that tan 75 = = 2 +. Hence deduce that tan 75 t 7 = 4 60 Ans- Q:7-Prove that sin (n+1)x sin(n+2)x + cos(n+1)x cos(n+2)x = cos x. Ans-

31 Q:8- If A + B + C = π, and cos A = cos B cos C, show that 2 cot B cot C = 1. Ans- Q:9-Show that = 3, given that tan α = ta β Ans- Q:10-Show that cos 10 + cos cos 130 = 0 Ans-

32 RAJA RAM MOHAN ROY ACADEMY CLASS: 11 C, 11D SUB: ECONOMICS WORKSHEET : 1 1. Define demand. 2. What is the difference between complementary goods and substitute goods? 3. Define joint demand. 4. Explain any two determinants of demand. 5. How does income of the consumer affect the demand of inexpensive goods? 6. What is cross price effect? 7. Enlist any four factors affecting demand. 8. Define market demand. 9. What is the difference between ex ante and ex post demand? 10. Explain the meaning of derived demand with the help of an example.

33 RAJA RAM MOHAN ROY ACADEMY CLASS: 11 C, 11D SUB: ECONOMICS WORKSHEET : 2 1. Explain any two reasons of economic reforms. 2. Define liberalization. 3. Give two main features of socialism. 4. What do you mean by human capital formation? 5. What is the difference between absolute and relative poverty? 6. Define sustainable development. 7. What is production possibility curve? State its two characteristics What is the difference between goods market and factor market? 9. Give two benefits of organic farming in India. 10. What is human development index?

34 RAJA RAM MOHAN ROY ACADEMY CLASS: 11 C, 11D SUB: ECONOMICS WORKSHEET : 3 Q1.Calculate the mean, median and mode for the following data. Marks(less than) No of students Q2. Calculate the mean deviation from mean from the following data. Marks No of students Q3. Find out the standard deviation from the following data. Class interval frequency Q4. Calculate the correlation coefficient between the height of father and height of son from the given data. Height of father(in inches) Height of son(in inches) Q5. Find out the coefficient of rank correlation from the following. X Y

35 Q6. From the following data, calculate the price index numbers for 2016 with 2006 as base by i) Laspeyre s method ii) paashe s method iii) fisher s ideal method Commodity price quantity price quantity A B C D

36 WORK SHEET-1 ACCOUNTS- XI Answer the following questions: Q1 What do you mean by capital?. Q2 What is a journal? Q3 What do you mean by ledger? Ans Q4 Why is the journal called book of prime entry or book of original entry? Q5 Why is the ledger called as the book of final entry? Q6 What is journalising? Q7 What is meant by accounting cycle? Q8 Define depreciation? Ans Q9 Explain the meaning of following terms:

37 a. Creditors b. Debtors Q10 Name the asset which never depreciate. Answer the following questions: WORK SHEET-2 ACCOUNTS- XI Q1 What is a trial balance? Q2 Is agreement of trial balance a conclusive proof that books of accounts are correct? Q3 What is closing stock? Q4 What is revenue expenditure?

38 Q5 What is a current asset? Q6 What is a fixed asset? Q7 What is a current liabilities? Q8 What is prepaid expense? Q9 What is outstanding expense? Q10 What is an accrued income?

39 WORK SHEET-3 ACCOUNTS- XI Answer the following questions: Q1 What is income received in advance? Q2 Explain the following terms : (i) Capital (ii)profit(iii) Debtors (iv) Fictitious Assets (v) Intangible Assets (vi) Event Q3 Distinguish between expenses and losses. Q4 Distinguish between fixed assets and current assets. Q5 What is meant by goods traded in?

40 Q6. Give two examples of external liability. Q7 Name the parties to a Bill of Exchange. Ans Q8 Define Bills of exchange. Ans Q9 Distinguish between reducing balance method and straight line method of depreciation. Q10. Learn and write the format of Balance Sheet and Statement of Profit/Loss Account of a Joint Stock Company.

41 RAJA RAM MOHAN ROY ACADEMY CLASS: 11 C, 11D SUB: COMMERCE WORKSHEET : 1 1. What is meant by trading on equity? 2. Explain the difference between capitalization and capital structure. 3. Define working capital. 4. Define capital gearing. 5. What is meant by circulating capital? 6. Enlist any four sources of finance for a partnership firm. 7. Discuss the need and importance of business finance for a business. 8. Explain any two factors affecting the fixed capital requirement of a business organization. 9. Explain any two factors affecting the capital structure of a business organization. 10. Explain any two factors affecting the working capital requirement of a business organization.

42 RAJA RAM MOHAN ROY ACADEMY CLASS: 11 C, 11D SUB: COMMERCE WORKSHEET : 2 1. What is a hybrid security? 2. Define equity shares. 3. Define preference shares. 4. What is meant by a debenture? 5. Define retained earnings. 6. Define sweat equity shares. 7. Define bonus shares. 8. Define right shares. 9. What is meant by ESOP? 10. Define convertible preference shares.

43 RAJA RAM MOHAN ROY ACADEMY CLASS: 11 C, 11D SUB: COMMERCE WORKSHEET : 3 1. Define redeemable preference shares. 2. Define participating preference shares. 3. Define cumulative preference shares. 4. Define secured debentures. 5. Define naked debentures. 6. Define bearer debentures. 7. What is meant by factoring? 8. Define public deposits. 9. Expand the terms: ICICI, UTI 10. Expand the terms : IDBI, IFCI

44 WORKSHEET FOR WINTER BREAK CLASS XI BIOLOGY Define the following terms 1. Adipose tissue 2. Cartilage 3. Bone 4. Maxilla 5. Labrum 6. Lipase 7. Propulsion 8. Enzymes 9. Alveoli 10. Gills Answer the following questions: DRAW a well labelled diagram.vertical section of a tooth.compound Stomach of a ruminant Skeletal muscles

45 Define the following terms Peristalsis Bile juice Assimilation WORKSHEET FOR WINTER BREAK CLASS XI BIOLOGY Answer the following questions: What are the different functions of blood. Explain the different mouth parts of a cockroach with the help of a diagram. How does respiration take place in a fish. Draw a well labelled diagram to explain it.

46 HOLIDAY HOME WORK (ENGLISH LITERATURE) CLASS : XI WORKSHEET NO. : 1 1. Learn any one poem out of these in your syllabus. 2. Read all the stories from the book prescribed to be able to understand them. HOLIDAY HOME WORK (ENGLISH LITERATURE) CLASS : XI WORKSHEET NO. : 2 1. The opening scene of the play `Tempest has a taste of tragic-comedy. Discuss. 2. Write about the conspiracy hatched by Antonio. WORKSHEET NO. : 3 HOLIDAY HOME WORK (ENGLISH) CLASS : XI 1. Go for a nature walk for few days in the morning time and write about your experiences. (Hints : Sights, people, things, natural objects) sounds (nature and humans). Your feelings. 2. Visit an old age home/orphanage and write your experience