Holiday Home Work Session-2020-2021

Subject : Accountancy Class XII

Chaprer 1 - Not for profit Organization

a) 10 long questions (6/8 marks)

b) 20 - objective type questions (1 mark)

c) 10 short answer type questions (3or 4 marks)

Chapter 2 Partnership fundamentals

a) 5 long questions (6/8 marks)

b) 20 - objective type questions (1 mark)

c) 20 short answer type questions (3or 4 marks)

Chapter- Reconstitition of Partnership- change in profit Sharing Ratio

A) Valuation of goodwiil

Project work

a) Journal, Ledger trial balance and final account from 30 transactions + 5 adjustments

of a sole proprietor ship business.

b) Segment Analysis of a Company.

Reference

a) D K goel - project work.

b) Refer detailed guidelines of cbse as given in Syllabus.

KV IIT KHARAGPUR, SUMMER VACATION HOLIDAY HOME WORK

CLASS- XII C SUB-BIOLOGY

Those students, who haven’t completed exercise questions, complete the followings:-

1 (a) Reproduction in Organisms.

(b) Sexual reproduction in flowering plants.

(c) Human reproduction.

(d) Reproductive health.

(2) Frame question bank along with the answer for the chapters 1,2,3 and 4 as per the

followings:-

(a) Five one mark question from each chapter.

(b) Five two marks question from each chapter.

(c) Three 3 marks question from each chapter.

(d) Three 5 marks question from each chapter.

Long questions must also include diagram oriented questions.

********************

Holiday Homework

Science

Class VIII A

1. Solve Joyful Learning activities from page no 95-111 and 125-129

2. Prepare a project on any one communicable disease- their causative organisms, mode of

transmission, prevention and cure.

3. Prepare 10 MCQs of chapters 1-4

Holiday Homework

Science

Class VI A & B

1. Keep a daily diet chart for 10 days in the following format (mention the food that you ate for

breakfast, lunch, snacks and dinner and sort them according to the nutrients they contain)

Check if you eat a balanced diet!

Date Sources of nutrients

Breakfast Lunch Snacks Dinner

Carbohydrates

Proteins

Fats

Vitamin A

Vitamin B complex

Vitamin C

Calcium Iron

Iodine

2. Prepare a project on any one deficiency disease – (Carbohydrate or proteins)

Holiday Homework

Biotechnology

Class XII B

1. Prepare Investigatory project.

2. Answer the 1 mark questionnaire for chapter 1 & 2

3. Explore the website NCBI.nlm.nih.gov and BLAST

Holiday Home Work Session-2020-2021

Subject : Business Studies

Chapter 1 Nature and Significance of Management -

a) case studies 5 Long quseions

b) 20 - obejctive type questions

Chapter 2 Principles of Management

a) case studies 5 Long quseions

b) 20 - obejctive type question

Chapter 3- Business Environment

a) case studies 5 Long quseions

b) 20 - obejctive type question

Chapter 4 Planning

a) case studies 5 Long quseions

b) 20 - obejctive type question

Chapter 5- Organising

a) case studies 5 Long quseions

b) 20 - obejctive type questions

Source - Business studies NCERT

POONAM GANDHI

PROJECT WORK- a) Launching of your own product ( ref. Marketing management) or

b) Application of principles of management in a business organisation. Or

c) Study of stock market through portfolio investment.

Refer detailed guidelines of cbse as given in Syllabus.

Holiday homework Class – XII-B

sub – Chemistry

1. Write the difference between Frenkel and Schottky defect.

2. Explain how n-type semiconductor is formed with suitable example.

3. Write a short note on metal excess defect.

4. Define packing efficiency. Calculate the packing efficiency of a body centre cubic lattice.

5. Explain the term ‘ferromagnetism’ and ‘ferrimagnetism’ with schematic diagrams.

6. What type of defect can arise when a crystal get heated? Which physical properties get affected by it?

7. calculate the mole fraction of benzene in a solution containing 30% by mass in carbon tetrachloride.

8. Define azeotropic mixture.

9. State Henry’s law and mention its application.

10. Calculate the mass of a solute (M=40) dissolved into 112g octane to reduce its vapoure pressure to

80%.

11. What is osmotic pressure? How reverse osmosis can be implied in our life?

12. Write a short note on VantHoff factor.

13.Determine the amount of CaCl2 (i=2.47) dissolved in 2 lit of water such that its osmotic pressure

0.65atm at 300k.

14. Derive Nernst eqn. for Daniel cell.

15. Explain how molar conductivity depends on conc.of a solution.

16. State Kohlrasch law of independent migration of ions. Mention its application.

17. Write the differences between electrolytic cell and galvanic cell.

18. Write the differences between primary and secondary battery.

19. What is fuel cell? Write down the electrode reaction occurs in it.

20. Calculate how much charge is required to get 2moles of aluminium from molten bauxite.

Holiday Homework Class-XII-C(CHEMISTRY) Chapter-1(The solid state) Q1.Classify the following solids in different categories based on the nature of Intermolecular forces operating in them: Potassium sulphate, tin, benzene, urea, ammonia, water, zinc sulphide Graphite, rubidium, argon, silicon carbide. Q2.solid A is a very hard insulator in solids as well as in molten state and melts at extremely high temperature. what type of solid is it?

Q3.A compound is formed by two elements M and N .The element N forms

ccp and atoms of M occupy 1/3rd of tetrahedral voids . What is the formula of the compound? Q4.Which of the following lattices has the highest packing efficiency (i)simple cubic (ii)body-centred cubic (iii)hexagonal closed packed lattice? Q5.An element with molar mass 2.7x10-2 kg/mol, forms a cubic unit cell with edge length 405pm. If it’s density is 2.7x103kg/m-3, what is the nature of the cubic unit cell? Q6.What type of defect can arise when a solid is heated? Which physical property is affected by it and in what way? Q7.What type of stoichiometric defect is shown by : (i)ZnS (ii)AgBr Q8.Explain how vacancies are introduced in a ionic solid when a cation of higher valence is added as an impurity in it? Q9.Ionic solids , which have anionic vacancies due to metal excess defect develop colour. Explain with the help of a suitable example. Q10.A group 14 element is to be converted into n-type semiconductor by doping it with a suitable impurity . To which group should this impurity belong? Q11.What type of substance would make better permanent magnets , ferromagnetic ferromagnetic .Justify your answer.

** Questions from solutions , electrochemistry and chemical kinetics:- Q1.Find the value of ‘i’ for sodium sulphate if it is fully dissociated? Q2.What is the role of ZnCl2 in a dry cell? Q3.Al metal cannot be obtained by the electrolysis of aq. solution of aluminium salt.why? Q4.How much electricity in terms of Faraday is required to produce 40gm of Ca from molten CaCl2? Q5.Name the type of cell used in Apollo space programme for providing electrical power? Q6.Express the relation between the conductivity and molar conductivity of a solution? Q7.Which of the following has higher boiling point and why?0.1M NaCl or 0.1 glucose? Q8.Two liquids on mixing produce a warm solution . which type of deviation is shown By them? Q9.What is the value of ‘i’ if a solute is 50% ionised ? Q10.Write the cathode reaction of fuel cell? Q11.Write an application of reverse osmosis? Q12.A doctor advised a person suffering from high blood pressure to take less quantity Of common salt .why? Q13.Which of the following solution will have highest freezing point . (A)1M of glucose (b)1M NaCl (c)1M CaCl2? Q14.Gas A is more soluble than Gas B at the same temperature. Which one of the two gases will have the higher value of KH and why? Q15.Which aq. solution has higher conc. -1M OR 1m of the same solute? Q16.At higher altitude person suffers from a disease called Anoxia and they cannot think clearly and why? Q17.Then mercury iodide is added to an aq. solution of Ki, the freezing point is raised. Why? Q18.What are the products of electrolysis of aq. solution of NaCl? Q19.Why does a dry cell becomes dead after a long time even if it has not been used?

Q20.Depict the galvanic cell in which the reaction is Cu+2Ag+

Cu2++2Ag. Q21.For the given cells – Lead storage cell , mercury cell , fuel cell, and dry cell. Answer the following – (i)which cell is used in hearing aids? (ii)which cell is used in automobiles? Q22.Predict the product of electrolysis of an aq. solution of CuCl2 with Pt electrodes? Q23.What type of azeotropic mixture will be formed by a solution of acetone and chloroform? Justify on the basis of intermolecular interaction that develop in the solution. Q24.Write the chemistry of lead storage battery? Q25.If a current of 0.5amp flows through a metallic wire for 2 hours , then how many electron would flow through the wire. Q26.Calculate the potential of hydrogen electrode in contact with a solution whose pH Is 10. Q27.Identify the reaction order from the rate constant(K). K=3x10-4L mol-1S-1. Q28.What is a complex reaction? Q29.What is the effect of catalyst on activation energy? Q30.What is the molecularity for a reaction – H2+1/2O2 H2O. Q31.Why the rate of a reaction is increased with the increase in temperature? Q32.Can activation energy for a reaction be zero?why? Q33.Find the quantity of charge required for the reduction of 1 mol of Cr2O7

2- ions? Q34.What is the relation between degree of dissociation and molar conductivity of an electrolyte? Q35.Write the product obtained at anode on electrolysis of conc. of sulphuric acid using Pt-electrodes? Q36.Write overall cell reaction for lead storage battery when the battery is being charged? Q37.Why CaCl2 is used to clear snow on roads?

Q38.Define the term- (i)azeotrope (ii)colligative properties. Q39.Calculate the molality of a sulphuric acid solution in which the mole fraction of Water is 0.85? Q40.What is the effect of dilution on- (i)conductivity (ii)molar conductivity. Q41.Give the four differences between order and molecularity of a reaction? Q42.(i)Deduce the half life for zero order reaction . (ii)2gm benzoic acid dissolves in 25gm of benzene shows a depression in freezing point equals to 1.62K. molal depression constant for benzene is 4.9K.kg/mol. What is the percentage association of acid if it forms dimer in solution? Q43.(i)When a graph is plotted for log K vs 1/T, a straight line with a slope of -4250K is obtained. calculate activation energy for the reaction ? (ii)A first order reaction takes 20 minutes for 25% decomposition .calculate the time required when 75% of the reaction will be completed? Q44.Give 4 differences between physical and chemical adsorption? Q45.What is collodiam? Teacher A.K.Rakshit (PGT Chemistry)

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Write a program to write those lines which have the character 'p' from one text file to another

text file.

Write a python function sin(x,n) to calculate the value of sin(x) using its taylor series expansion

up to n terms.

Write a program to print fibonacci series using recursion.

Write a program to create a library in python and import it in a program.

Write a program to perform read and write operation with .csv file.

Write a Django based web application and write the data to a csv file.

Write a program to check a number whether it is palindrome or not.

Write a recursive pyhton program to test if a string is palindrome or not.

Write a program to count the number of vowels present in a text file.

Write a program for binary search.

Write a program to count number of words in a file.

Write a program to calculate the factorial of an integer using recursion.

Write a program to calculate compound interest.

Write a program for linear search.

Write a program to display ASCII code of a character and vice versa.

Write a program to input a character and to print whether a given character is an alphabet, digit

or any other character.

Write a program in python to plot a pie chart on consumption of water in daily life.

Write a program to generate random numbers between 1 to 6 and check whether a user won a

lottery or not.

Write a program to plot a bar chart in python to display the result of a school for five consecutive

years.

Write a program in python to plot a graph for the function y = x^2

Write a program to find the most common words in a file.

Write a program for bubble sort.

SQL Queries :

Write a program to connect Python with MySQL using database connectivity and perform the

following operations on data in database: Fetch, Update and delete the data

Write a menu based program to perform the operation on stack in python.

Write a menu based program for circular queue.

Create a graphical calculator using tkinter library.

Write a menu based program to perform the operation on queue in python.

Write a program to calculate EMI for a loan using numpy.

Write a program to open a webpage using urllib library.

Queries using DISTINCT, BETWEEN, IN, LIKE, IS NULL, ORDER BY, GROUP BY,

HAVING

Queries for Aggregate functions- SUM( ), AVG( ), MIN( ), MAX( ), COUNT( )

Write a program in python to check a number whether it is prime or not.

PRACTICAL FILE- COMPUTER SCIENCE (083)

NAME OF PRACTICAL

Programming Language : Python

CLASS-XII

KENDRIYA VIDYALAYA IIT KHARAGPUR

HOLIDAY HOMEWORK ( SUMMER VACATION)-2020_21

Class XII A SUBJECT – GEOGRAPHY

1. Explain the concept of ‘possibilism' with three

suitable examples.

2. Explain the concept of 'Determinism' with suitable

examples.

3. Explain the concept of 'Neo Determinism' with

suitable examples.

4. State the six approaches of human geography.

5. State six different fields of human geography.

6. State any six sub-fields of social geography.

7. Which are the six sub-fields of economic

geography.

8. What is 'demographic cycle'? Describe three stages

of Demographic transition theory.

9. Explain the three components of population change

in the world Analyse the impacts of population

change.

10. What are the factors influencing the

distribution of Population in the world.

11. What are the push factors and pull factors of

migration.

12. Why is sex ratio unfavourable to women in the

world? Explain any three reasons.

13. What are the different types of population

pyramid. Explain.

14. What is the main thrust of the National youth

policy of Government of India 2003

15. “An uneven distribution of Population suggest

a close relationship between population and

physical and socio-economic factors”. support

examples.

16. What is population doubling time? Explain the

characteristics of the growth of population in India

in phase 1 and phase 2.

17. What is migration. Explain the consequence of

migration in India.

18. What are the streams of migration.

19. Explain the couses of migration of unskilled

migrants from rural to urban areas in India and

their suffering.

20. How is sex ratio measured?

कें द्रीय विद्यालय आईआईटी खड़गपुर

ग्रीष्मकालीन गृह कायय 2020

विषय वहिंदी कक्षा 12 (अ स द)

प्रश्न। 1 ससल्वर वेस िंग कहानी में यशोधर पिंत और उसकी पत्नी के स्वभाव की चार चार सवशेषताएिं सिसखए ?

प्रश्न 2 ससल्वर वेस िंग कहानी में 2 पीस़ियों के अिंतराि का वर्णन ह ैकहानी के आधार पर स्पष्ट कीसजए?

प्रश्न 3 भसिन कौन थी उन्हें जीवन में कौन-कौन सी कसिनाइयों का सामना करना पडा ?

प्रश्न 4 दो सवषय पर अनचु्छेद सिसखए । शब्द सीमा 150

अ -सकसानों की समस्याएिं

ब- कोरोना वायरस को रोकन ेमें सवद्यासथणयों की भसूमका ।

ब- ऑनिाइन सशक्षा में कसिनाई और ससुवधाएिं

प्रश्न 5 पतिंग कसवता का मिू भाव सिसखए ?

प्रश्न 6 आत्म पररचय और सदन जल्दी-जल्दी ढिता ह ैकसवताओिं का सार अपन ेशब्दों में सिसखए ?

प्रश्न 7 पररभाषाएिं सिसखए -

*पीत पत्रकाररता सकस ेकहते हैं

*रेस यो की िोकसप्रयता के क्या कारर् ह ै

* अिंशकासिक पत्रकार सकस ेकहते हैं

* पेजथ्री पत्रकाररता से क्या आशय ह ै

*सस्टिंग ऑपरेशन क्या होता ह ै

* खोजी पत्रकाररता सकस ेकहते ह ै

* उल्टा सपरासम शैिी क्या होती ह ै

*सिंपादक के क्या क्या कायण होते हैं

* ब्रेसकिं ग न्यजू़ सकस ेकहते हैं

*सहिंदी में छपन ेवािे चार समाचार पत्रों के नाम सिखो

आरोह भाग 2 के गद्य और पद्य खिं स ेचार पाि और 4 कसवताओिं को याद कीसजए ।

Holiday’s Homework

Subject-History

Class-XII

1.Explain the features of architecture of Mohenjo-Daro.

2. To what extent had the Harappans established trade relations with the world?

3. How have archaeologists used evidence from material remains to piece together parts of fascinating

Harappan history? Explain.

4. How do archaeologists reconstruct the past?

5. Write a note on the drainage system of the Harappans.

6. Why do archaeologists and historians find Harappan script enigmatic? Explain.

7. Identify the following places and mark them on the outline map of India:

1) The Harappan site in Haryana from where the terracotta models of plough found.

2) The Harappan site from where the remains of water reservoirs found.

3) The Harappan site from where the evidence of a ploughed field found.

4) The Harappan site from where the remains of Great Bath found.

8. Find out the relationship between the two parts of item ‘a’ and fill in the blanks of item ‘b’

accordingly:

a. Dilmun – Bahrain

b. Meluha -___________

a. Harappa - Dayaram Sahni

b. Mohenjodaro- __________

a. Horizontal excavation - John Marshal

b. Vertical excavation _________

a. Ploughed field – Kalibangan

b. Granaries-______________

9. Why is 6th century BCE often regarded as a major turning point in the early Indian history?

10. How did Magadha become the most powerful Mahajanapada between 6th and 4th century BCE?

11. Explain the sources used by historians to reconstruct the history of the Mauryan Empire.

12. Explain the agricultural practices followed by the cultivators to increase productivity from C. 600 BCE

to 600 CE.

13. Find out the relationship accordingly

A. Magadha : Rajagriha

B. Anga : ...............

A. Megasthanese : Indica

B. Chanakya : ..............

A. Gold coins : Kushans

B. Land grants : ....................

A .Harisena : Samudragupta

B. Banabhatta : ......................

14. On the basis of reading chapter-1 “Bricks,Beads and Bones” and chapter-2 “Kings,farmers and

Towns” make at least 20 very short questions covering both whole chapters and slove them in the

homework copy.

15. On the political map of India locate and label the followimg.

a) Avanti mahajanapada

b) Magadha mahajanapada

c) Topra-Pillar Inscription

d) Girnar-Major Rock Edicts

e) Sanchi-pillar Inscription

KENDRIYA VIDYALAYA IIT KHARAGPUR

HOLIDAY HOMEWORK(SUMMER VACATION)-2020-21

CLASS- XII SUBJECT- PHYSICS

CHAPTER 1

1. Write basic properties of electric charge.

2. Define electric flux. Write its S.I. unit.

3. Draw the pattern of electric field lines, when a point charge –Q is kept near

an uncharged conducting plate.

4. Consider two hollow concentric spheres S1 and S2 enclosing charges 2Q and

4Q respectively.

I. Find out the ratio of the electric flux through them.

II. How will the electric flux through the sphere S1 change , if a medium

of dielectric constant r is introduced in the space inside S1 in place of

air ?

5. Derive an expression for the electric field intensity at a point on the

equatorial line of an electric dipole of dipole moment → . Depict the

orientation of the dipole in (a) stable (b) unstable equilibrium in a uniform

electric field

6. State Gauss’s law. Use it to deduce the expression for the electric field due

to a uniformly charged thin spherical shell at points

I. Inside and outside the shell.

II. Plat a graph showing variation of electric field as a function of r>R

and r<R. ( r being the distance from the centre of the shell).

8. Two identical metallic spheres A and B having charges +4Q and -10Q are

kept a certain distance apart. A third identical uncharged sphere C is first

placed in contact with sphere A and then with sphere B. Spheres A and B are

then brought in contact and then separated. Find the charges on the spheres A

and B.

9. (I). Derive an expression for the electric field E due to a dipole of length ‘2a’

at a point distant r from the centre of the dipole on the axial line.

(II). Drive a graph E versus r for r>>a.

CHAPTER 2

10. Express dielectric constant in terms of capacitance of a capacitor.

11. Define an equipotential surface and write any two properties of an

equipotential surface.

12. What is the geometrical shape of equipotential surfaces due to a single

isolated charge?

13. A slab of material of dielectric constant K has the same area as that of the

plates of a parallel plate capacitor but has the thickness d/2 , where d is the

separation between the plates. Find out the expression for its capacitance

when the slab is inserted between the plates of the capacitor.

14. Two point charges 2C and -2C are placed at points A and B 6 cm apart.

i. Draw the equipotential surfaces of the system.

ii. Why do the equipotential surfaces get closer to each other near the

point charges?

15. Obtain the expression for the energy stored per unit volume in a charged

parallel capacitor.

16. Two point charges q1 and q2 are located at r1 and r2 respectively in an

external electric field E. Obtain the expression for the total work done in

assembling this configuration.

17. Two identical capacitors of 12pF each connected in series across a battery

of 50 V. How much electrostatic energy is stored in the combination? If these

were connected in parallel across the same battery, how much energy will be

stored in the combination now? Also find the charge drawn from the battery in

each case.

18. Find the ratio of the potential differences that must be applied across the

parallel and series combination of two capacitors C1 and C2 with their

capacitance in the ratio 1:2 so that the energy stored in these two cases

becomes the same.

CHAPTER 3

19. Explain the term drift velocity of electrons in a conductor. Hence obtain the

expression for the current through a conductor in terms of drift velocity.

20. State the two Kirchhoff’s rules used in electric networks. How are these

rules justified?

21. Answer the following:

(i) Why are the connections between the resistors in a metre bridge

made of thick copper strips?

(ii) Why is it generally preferred to obtain the balance point in the

middle of the metre bridge wire?

(iii) Which material is used for the metre bridge wire and why?

22. State the underlying principle of a potentiometer. Why is it necessary to (a)

use a long wire, (b) have uniform area of cross-section of the wire and (c) use a

driving cell whose emf is taken to be greater than emfs of the primary cells?

23. Define the term resistivity of a conductor. Give its SI unit. Show that the

resistance R of a conductor is given by mL/ne2A, where the symbols have their

usual meaning.

(i) Define the term conductivity of metallic wire. Write its SI unit

(ii) Using the concept of free electrons in a conductor, derive the

expression for the conductivity of a wire in terms of number density

and relaxation between current density and the applied electric field

E.

24. Using Kirchhoff’s rules obtain the condition in terms of the resistances of 4

arms of Wheatstone bridge.

25. In the metre bridge experimental set-up the null point D is obtained at a

distance of 40cm from end A of the metre bridge wire. If a resistance of 10 is

connected in series with R1 null point is obtained at AD = 60 cm. Calculate the

values of R1 and R2.

ABDUL KADIR

(PGT PHYSICS)