dayawati modi academy ramnagar -...

Dayawati Modi Academy – Ramnagar - Varanasi

Summer Vacation Holiday Home Work (2017-18)

Class: XI

Subject: Accountancy

Unit 1 - Introduction to Accounting:-

Meaning of accounting, accountancy, objective, Advantage, & Limitation.

Basic Accounting term:- Baseman t/b, capital, primly, liatinliny, MCa, Depors, creditor,

goods, voucher, diseart.

Unit 2:- Accounting perform & spiral Accounting treatment

Accounting equation, analysis rule of debit& credit, assets, Liabilities, capital, revenue &

Expenditure, Jornal, Journal Entry, Hs.

Subject: Economics

Chapter-1:- Distinguish between economic and non-economic activities.

Chapter-2:- collect date of temperature of 25 days. Classify it and present if in a diagram.

Subject: B.st.

Chapter-1:- 1. Write characteristic of business.

2. Distinguish between profession and employment.

3. How can you start business? What are your objectives of statcting this business?



Class: XI

Subject: English

Q.1 Narrate the story of your childhood and relation between you and your grandmother.(300

words)

Q.2 You are Aman/Ankita, Sports Secretary of your school. Your school is going to organize an inter-

school basketball competition. Draft a suitable notice for school notice-board.

Q.3 How can you say that Canterville Chase was a haunted house?(100-120 words).

Q.4 Read the stanza and answer the following questions:

Now she’s been dead nearly as many years

As that girl lived. And of this circumstance

There is nothing to say at all.

Its silence silences.

(a) Who is ‘she’ in this stanza?

(b) What is meant by ‘ this circumstance’?

(c) Why there is nothing to say at all?

(d) Elucidate ‘ its silence silences’.

(e) Write the poetic devices with lines of this stanza.

(f) What is the age of poetess’s mother in this stanza?

Q .5 Prepare a chart of tense. Write each and every sort of tense with helping verb and verb

form in your chart.



Class: XI

SUBJECT: PHYSICS

1. If |A| 2 and |B| 4, then match the relations in column I with the angle between A and B in

column II

Column I Column II

(a) A B 0 (i) =30

(b) A B 8 (ii) =45

(c) A B 4 (iii) =90

(d) A B 4 2 (iv) =

2. If |A| 2 and |B| 4 , then match the relations in column I with the angle between A and B in

column II.

Column I Column II

(a) A.B = 0 (i) =0

(b) A.B = +8 (ii) = 90

(c) A.B = 4 (iii) =180

(d) A.B = –8 (iv) =60

3. Which one of the following statements is true?

(a) A scalar quantity is the one that is conserved in a process.

(b) A scalar quantity is the one that can never take negative values.

(c) A scalar quantity is the one that does not vary from one point to another in space.

(d) A scalar quantity has the same value for observers with different orientations of the axes.

4. Consider the quantities, pressure, power, energy, impulse, gravitational potential, electrical charge,

temperature, area. Out of these, the only vector quantities are

(a) Impulse, pressure and area

(b) Impulse and area

(c) Area and gravitational potential

(d) Impulse and pressure

5. The component of a vector r along X-axis will have maximum value if

(a) r is along positive Y-axis

(b) r is along positive X-axis

(c) r makes an angle of 45° with the X-axis

(d) r is along negative Y-axis

6. For two vectors A and, B |AB| |AB| is always true when

(a) |A| |B | 0

(b) A B

(c) |A| |B| 0 and A and B are parallel or anti parallel

(d) when either |A| or |B| is zero.

7. Three vectors A,B and C add up to zero. Find which is false.

(a) (A×B) × C is not zero unless B,C are parallel

(b) (A×B).C is not zero unless B,C are parallel

(c) If A,B,C define a plane, (A×B)×C is in that plane

(d) (A×B).C=|A||B||C|C2=A

2+B

2



Class: XI

8. A, B and C are three non-collinear, non co-planar vectors.What can you say about direction of A ×

(B × C)?

9. A girl riding a bicycle with a speed of 5 m/s towards north direction, observes rain falling vertically

down. If she increases her speed to 10 m/s, rain appears to meet her at 45° to the vertical. What is the

speed of the rain? In what direction does rain fall as observed by a ground based observer?

10. A river is flowing due east with a speed 3m/s. A swimmer can swim in still water at a speed of 4

m/s.

(a) If swimmer starts swimming due north, what will be his resultant velocity (magnitude and

direction)?

(b) If he wants to start from point A on south bank and reach opposite point B on north bank,

(i) which direction should he swim?

(ii) what will be his resultant speed?

(c) From two different cases as mentioned in (a) and (b) above, in which case will he reach opposite

bank in shorter time?



Class: XI

SUBJECT: CHEMISTRY

1. What will be the mass of one atom of C-12 in grams?

2. What is the symbol for SI unit of mole? How is the mole defined?

3. What is the difference between molality and molarity?

4. 45.4 L of dinitrogen reacted with 22.7 L of dioxygen and 45.4 L of nitrous oxide was formed. The

reaction is given below:

Which law is being obeyed in this experiment? Write the statement of the law?

5. If two elements can combine to form more than one compound, the masses of one element that

combine with a fixed mass of the other element, are in whole number ratio.

(a) Is this statement true?

(b) If yes, according to which law?

(c) Give one example related to this law.

6. The density of 3 molal solution of NaOH is 1.110 g mL–1. Calculate the molarity of the solution.

7. Volume of a solution changes with change in temperature, then, will the molality of the solution

be affected by temperature? Give reason for your answer.

8. If 4 g of NaOH dissolves in 36 g of H2O, calculate the mole fraction of each component in the

solution. Also, determine the molarity of solution (specific gravity of solution is 1g mL–1).

9. Match the following physical quantities with units

Physical quantity Unit

(i) Molarity (a) g mL–1

(ii) Mole fraction (b) mol

(iii) Mole (c) Pascal

(iv) Molality (d) Unitless

(v) Pressure (e) mol L–1

(vi) Luminous intensity (f) Candela

(vii) Density (g) mol kg–1

(viii) Mass (h) Nm–1

(i) kg

10. A vessel contains 1.6 g of dioxygen at STP (273.15K, 1 atm pressure). The gas is now transferred

to another vessel at constant temperature, where pressure becomes half of the original pressure.

Calculate

(i) volume of the new vessel.

(ii) number of molecules of dioxygen.



Class: XI

Subject : Maths

(1) If f(x)=(1 −1

𝑥), then write the value of f{𝑓 (

1

𝑥)}

(2) ) Suppose f(x) ={𝑎 + 𝑏𝑥 , 𝑥 < 14 , 𝑥 = 1𝑏 − 𝑎𝑥 , 𝑥 > 1

and if lim𝑥→1 𝑓(𝑥) =f (1) then what are the possible values

of a and b.

(3) If n(A)=2 , n(B)=3 then find the number of subsets of A×B .

(4) If A= (x: x is a multiple of 3) and B= (x: x is a multiple of 5) then find (A∩B).

(5) In a group of 52 persons, 16 drink tea but not coffee and 33 drink tea .it is assumed that

every person takes tea or coffee. Then find the number of persons who take coffee but not

tea.

(6) List all the elements of the set, A={x : x2 ≤ 10,xϵ Z}

(7) List all the elements of the set, A={x: x4 ≤ 100, xϵ Z

(8)Given A ={-1,0,2,5,6,11},B = {-2,-1,0,18,28,108} and f(x)=x2 –x – 2.Isf(A)=B? Find f(A),

(9) Write the relation R= {(x , x3)X is the prime number less than 10}is roster form.

(10)In a music school 28 students learn trumpet, 30 students learn violin and 32 students

learn guitar, 10 students learn guitar and trumpet, 6 students learn trumpet and violin, 8

students learn violin and guitar. The no. of students who learn only 1 instrument is 54. Also 20

students learn only violin .every students learn at least one instrument out of three instruments.

Find the no. of students in music school.

Subject: Biology

1. Collect material for herbarium file.

2. Complete Investigatory Project.

3. Complete Assignment of chapter 1 (Living world)

and chapter 2 (Biological Classification)

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Class: XI

Subject :-Computer Science(083)with c++

Answer the following questions

a) Name at least four early calculating devices.

b) Who first proposed the concept of ‘Stored Program Computer’?

c) Define the IPO cycle.

d) Explain the Von Neumann Computer.

e) Compare the salient features of first and second generation computers.

f) Why is Charles Babbage known as the Father of Modern Computers?

g) What are the functions of the control unit?

h) Where are the instructions needed to start a computer stored?

i) Explain booting process and its types.

j) Differentiate between:

i) Digital computers and analog computers.

ii) Microcomputers and Mini Computers

k) ‘Hardware is of no use without software and software cannot be used without

hardware.’ Explain.

l) How can the software be classified? Name at least one software in each of the categories.

m) What is an operating system? Write names of any two popular operating systems.

n) What is the role of a Page Map Table in Virtual Memory Management?

o) What is the purpose of a language processor?

p) Differentiate between:

(i) An interpreter and a compiler.

(ii) Priority Scheduling and Round Robin Scheduling

q) Explain any two utilities.

r) What is word processing? Discuss the purpose of word processing software.

s) What is the difference between an Open source Software and a Freeware. Write two

examples of each.

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