INDIAN LEARNER’S OWN ACADEMY, KUWAIT

HOLIDAY HOMEWORK – 2019-20CLASS XII (SCIENCE STREAM)

Life is all about climbing mountains and fording

streams… Arouse in yourself the desire to reach the pinnacle of

perfection. Act now, value every moment, as your dreams can only become a reality when action is taken towards its

achievement.Knowledge is of no value unless

you put it into practice.

Augment your learning skills and erudite the same through your

holiday homework. It will undoubtedly boost your

intellectual development. So enjoy your learning and make the best use of your valuable

time. All the work sheets should be done in assignment sheets The home work must be submitted to the class teacher on the reopening day of school

EnglishI. Read all the lessons from the Readers Flamingo and Vistas and revise everything done in class and home work assignment sheets.II. Practice the formats for the Writing Skills given in the Class work Notebook.III. Read the Novel "The Invisible Man" and write a Book Review on the Assignment Sheets. This review should be done by yourself and written in the following way-1. Name of the book followed by the name of the Author.2. The main Characters in the Book.3. A brief Character sketch of important characters.4. The summary of the novel in your own words.5. Which part in the story did you enjoy the most and why?6. Why would you recommend this book to others to read?7. Watch the movie "The Invisible Man" and write a short paragraph on - which one did you enjoy- the book or the movie and why?IV. Make a mini - dictionary of all the words or phrases which you will get acquainted with while reading books, magazines or interacting with people. Write meanings and sentences too for further reference.V. Prepare a short speech on the following topics. The speech should not exceed 4 minutes.a) Why reading is more beneficial than watching television?b) Is the media responsible for the moral degradation of teens?c) Prudence is an effort you can turn non-believers into believers in your plans.

d) Personal hygiene is important for professional success.e) The media does not force us to worship false icons.

VI. Read the passage carefully:BOOKSHOP

1. A bookshop is not something you find in every galli (narrow lane) these days. Books, which were once a permanent accompaniment for youngsters in their formative years, are fading out of their list of engagements.2. Ask any youngster which is the latest book he has read, and he will be baffled. Apart from a few consistent readers, others just befool themselves with a bookseller’s name or lament the curriculum load for justifying themselves, like this seventeen-year-old school-goer who says, ‘I just read my Physics book.’3. Television has been blamed for this calamitous situation, which is producing square-faced people and a bookless society. Furthermore, today’s children are under pressure to be smart and popular and to succeed on a social level. Parties, dancing and hanging out at different places begin early. Moreover, computers, video games, the Internet, swimming lessons, cricket and a youngster’s passion for an hour-long tete-a-tete on the telephone with friends eat up all their leisure time.4. A child who is constantly under pressure to live up to his parents’ expectations, which are at times unreasonable, does not like to throw himself into another set of books after the laborious school work, unless he comes from a family of readers where the engrossing work of Shakespeare and Dickens are just a matter of pulling them out from the shelves.5. Many parents also believe that today’s children have become more aware and demand logical reasoning for everything. They can no longer be fooled by fairy tales or animal stories, as they have not seen any fairies or animals except for those old and tired ones in the city zoo. This has made them more interested in movies or TV serials than a turtle talking to a rabbit or a frog changing into a prince.6. But a visit to the capital’s leading bookstores presents a contrasting picture of youngsters’ reading habits. These bookshops claim they are doing healthy business and have many regular buyers from this age group.7. Though the works of Shakespeare, Charles Dickens, Jane Austen and Mark Twain no longer interest teenagers, bestsellers from Daniel Steele, Sidney Sheldon and Jeffery Archer are on the list of all reading teens. Self-help books, such as those on personality development or relationship management, are also picked up by many of them.8. Mystery books like Nancy Drew and Hardy Boys are popular with kids. For parents of children below ten, volumes of Panchatantra Stories, Amar Chitra Katha and other bedtime stories are worthy purchases as these teach the child what is wrong in their own special way. What seems to be the case is that parents have surrendered to others what was their most precious right—that of making their children what they should become. With the old

techniques of child rearing losing ground, modem parents must consciously spend time with their children. Taste and enthusiasm for literature can be communicated artfully to children by reading bedtime stories to them, encouraging them to play historical characters and giving books as birthday gifts.9. Family reading which was once popular in the West could well be adopted here. Reading aloud the works of great men by parents to their children not only forms a warm bond between them but also attracts young minds to the world of books which gives them a chance to explore the sea of life.Answer the following questions:1. Choose the correct option:(a) What is blamed the most for taking teenagers away from good books?(i) Cinema (ii) Television (iii) Dance shows (iv) Music programmes(b) Which of the following is a mystery book? (i) Macbeth (ii) Panchatantra(iii) Nancy Drew (iv) Amar Chitra Katha(c) Whose book is popular among teenagers?(i) Jane Austen (ii) Mark Twain(iii) Shakespeare (iv) Sidney Sheldon(d) What was popular in the West? (i) Story reading (ii) Family reading(iii) Reading ancient stories (iv) Writing stories(e) Parents have surrendered their most ‘precious right’ which is:(i) loving the child (ii) making the most of their child(iii) rearing their child (iv) planning their child’s future(f) Reading aloud helps parents………….. their children (i) explain the difficulties of life to (ii) develop a closer relationship with(iii) explain the future (iv) Both (ii) & (iii)2. Answer the questions briefly:(a) Why do some children ignore books?(b) Why are some children fond of reading books?(c) What should parents do to inculcate love for books in their children?(d) How do teenagers pass their leisure time? (e) Find the word from the passage which means ‘absorbing’ (para 4)?(f) What is the general belief about youngsters’ reading habits? How is it countered?3. Find the words from the passage which means the same as the following:a) troublesome (para 3)b) link (para 9)VII. Read the passage carefully.1. My first tryst with Shakespeare several years ago was an enforced one. The Merchant of Venice was a prescribed book in class IX at school. I had read the wonderful Lamb’s Tales from Shakespeare and considered myself

an authority on when I read the stories. I did not think it necessary to read the antiquated language or trudge through several seemingly abstruse paragraphs to get to the main point. To spend a whole year to decipher a play when I had understood the story in a few pages seemed to be a sheer waste of time. Yet, somewhere along the way, I was drawn into the world of the Merchants of Venice, their portly argosies, the signors and rich burghers and the news on the Rialto. The language yielded its riches slowly, the characters became well drawn, more rounded and the impassioned speeches of Shylock and Portia stirred up a flurry of unexamined questions. Since then, I read several other plays, saw a couple of theatrical performances and watched young Leonardo Di Caprio in a modern Romeo and Juliet film. Shakespeare has been around.2. Shakespeare has shaped the writing and storytelling in the English language like no other writer has. He liberally borrowed bent and brought new words into the English language from addiction, bump, critic to worthless and zany. The phrases that he coined roll off our tongues as overused adages- All that glitters is not gold( Merchant of Venice), Jealousy is a green-eyed monster (Othello) and the perennial All is well that ends well.’ He has influenced several writers and been quoted by many of them. One of my favourite authors P.G Wodehouse had the odd Shakespearean phrase popping up in whacky situations like the ‘milk of human kindness’ sloshing inside someone or references to Banquo and Macbeth explained to Bertie by the estimable Jeeves who knew his Shakespeare. The plays have been translated into most languages including several regional Indian languages. They have lent themselves to film adaptations including the Vishal Bharadwaj’s Maqbool ( Macbeth) and Omkara ( Othello).3. The tragedies and comedies of Shakespeare cover every possible theme and idea-love, greed, jealousy, racism, friendship, mistaken identities, murder, mutiny, politics, feminism and revenge. Like any other celebrity, he has been the subject of speculation and controversy. There have been several conspiracy theories afloat on the ‘real’ authorship of the plays including a recent claim by a professor in Sicily that Shakespeare was actually Italian. Despite everything, Shakespeare’s appeal is universal, the stories transcend language and nationalities. However more than 400 years after Shakespeare’s birth, I can’t help wondering if anyone will read his works in the days to come.4. The average attention span in front of a television channel is about 4 seconds before clicking on the remote to move to another. It is perfectly acceptable to massacre the rules of grammar and syntax b4 u can say why dis kolaveri di. When you can tell a whole story in 140 characters, reading 14 sentences can be a chore. Who will have the desire or patience to delve into the viscous text of a Shakespearean play to dredge up the treasures that lie within?5. Shakespeare’s works have proved to be sturdy, unshakeable through the centuries, moving with the times, lending themselves to newer forms. I hope they don’t get relegated to a few the-hard literature students or musty

libraries. Who knows, we might yet have a different form of Shakespeare that will appeal to the Gen Next, a form that will induce them to approach an original play with a sense of anticipation, of beginning a quest to understand and appreciate a good story, well told.1. On the basis of your understanding of the above passage, make notes on it using headings and subheadings. Use recognizable abbreviations (wherever necessary-minimum four) and a format you consider suitable. Also supply an appropriate title to it.2. Write a summary of the passage in about 100 words.

Mathematics1. NCERT EXEMPLAR Chapter 1 Relations & Functions2. NCERT EXEMPLAR Chapter 2 Inverse Trigonometric Functions3. NCERT EXEMPLAR Chapter 5 Continuity & Differentiability4. NCERT EXEMPLAR Chapter 6 Application of Derivatives5. NCERT EXEMPLAR Chapter 7 Integrals

Informatics practices1. a. Define the term Polymorphism. What are the two ways polymorphism is demonstrated in

Java?

b. What is the importance of abstract classes in programming?

c. Write a short note on Operator overloading and Method Overloading citing examples for both.

d. Carefully study the code given below:String Message = "Hello! How are you?", Msg1, Msg2;Msg1 = Message.substring(7);Msg2 = Message.substring(0,5);

What will be the contents of the variables Msg1 and Msg2 after the above statements are executed?

2 a. Zia is working with list box. She has placed a list control on her form to display thelist of all items available in her shop. She wants to allow the user to select multiple items from her list control. Which property of jList should she use to do the same?

b. Differentiate between Procedural Programming paradigm and the Object Oriented Programming paradigm

c. What is a class?

d. Name the 3 essential class libraries that we need to import for setting up the connection with the database and retrieve data from the database.

e. Design a GUI application in which the user enters a number in the text field and on clicking the button the sum of the digits of the number

should be displayed in a label. Hint : Suppose user enters 123 the output should be 6(1+2+3).

3. a. Design a GUI application to accept a character in a text field and print in a label if that character is a vowel: a, e, i, o, or u. The application should be case sensitive.

b. Design a GUI application to reverse the given number and also find out whether the number is a palindrome or not.

c. Write the output produced by the following SQL commands:1. SELECT POW(4,3), POW(3,4);

2. SELECT ROUND(543.5694,2), ROUND(543.5694), ROUND(543.5694,-1);

3. SELECT TRUNCATE(543.5694,2), TRUNCATE(543.5694,-1);

4. SELECT LENGTH("Prof. M. L. Sharma");

5. SELECT CONCAT("SHEIKH", " HAROON") "FULL NAME";

6. SELECT YEAR(CURDATE()), MONTH(CURDATE()), DAY(CURDATE());

7. SELECT DAYOFYEAR(CURDATE()), DAYOFMONTH(CURDATE()),

DAYNAME(CURDATE());

8. SELECT LEFT("Unicode",3), RIGHT("Unicode",4);

9. SELECT INSTR("UNICODE","CO"), INSTR("UNICODE","CD");

10. SELECT MID("Informatics",3,4), SUBSTR("Practices",3);

4. a. Rewrite the following code using while loop:int a,b;for(a=10,b=4;a<=16;a++,b+=2){jTextArea1.append(""+a++);}JOptionPane.showMessageDialog(null,"Finished!!!");

b. What will be displayed in jTextArea1 after the execution of the following loop?for (int I=5; I>=2;I– –) jTextArea1.setText(jTextArea1.getText() + " "+Integer.toString(I*I));

c. What will be the values of num and num1 after execution of the following code?int num, num1=0;for(num=100;num<=101;num++){

num1= num+2;--num1;}

d. What will be the value of count and x after execution of the following code?int count=0,x=9;count=x- -;do{count+=x - -;}while(x>6);System.out.println("Count # " + count + " X # "+ x);

5 a. What will be the contents of jTeftField1 after executing the following code:

String str = “Mahatma”;jTextField1.setText( str.substring(4));

b. The following code has some error(s). Rewrite the correct code underlining all the corrections madeint z; z = 14;do; z = z-2; System.out.displayln(z);}while z >= 2;

c. Raman has typed the following code:int ch=Integer.parseInt(jTextField1.getText());switch(ch){

case 1:jTextField2.setText("Service");case 2: jTextField2.setText("Complaint");case 3: jTextField2.setText("Operator");break;default: jTextField2.setText("Not a valid entry");

}On entering the value 1, 2 or 3, he is getting the same output. Mention the possible reason for the same.

6 a. Richika is a programmer at Alpha Builders. To calculate wages to be paid to labourers she has developed the following GUI in Netbeans.

Male and Female labourers are respectively paid at the rate of Rs. 140/- per day and Rs. 160/-per day. Skilled labourers are paid extra at the rate of Rs. 50/- per day002E

i What should be done so that only one of the radio buttons (Male and Female) can be selected at a time?

ii Write Java code to do the following.a. Calculate and display the Total Wages in the corresponding label when the “Calculate Wages” button is pressed.b. Clear the Name and No. of Days worked Text Fields.c. Close the application when the “Stop” button is pressed.

b Mr. Rangaswami works at a Recreation Park as a system analyst. He has created the following GUI. When a group arrives at the Recreation Park, the number of people in the group and whether the group wants to enjoy the Water Park or not is entered. Entry fees is < 500 per person. The person can choose to play at Water Park by selecting thecheckbox. Rides of Water Park will cost < 250 extra per person.

Help him to write code for the following :i On the click of command button ‘Calculate’, textfield for ‘Entry Fees’

should display Entry Fees per person X Number of people.If ‘Water Park’ checkbox is selected, textfield for ‘Water Park Charges’ should display Water Park Charges per person X Number of people. Textfield for ‘Total Amount’ should display sum of Entry Fees and Water Park Charges for all the people in the group.Write Java code to clear all Textboxes on the click of ‘Clear’ button.

ii Write Java code to close the application on the click of ‘Exit’ button.

c Ms. Rakhi works in an International Bank as an IT Head. She designed a simpleinterest calculator program as shown below:

i The interest rate is given based on the account type as shown below:ACCOUNT TYPE INTEREST RATE %SAVING 4%RECURRING DEPOSIT 6%FIXED DEPOSIT 8%

Write the code required for ‘INTEREST RATE’ button to display interest rateas per the above given criteria.

ii Write the code required for ‘SI’ button to calculate and display ‘SimpleInterest’ based on the given formulae:

SI=(amount*interest_rate*duration)/100;

iii Write the code required for ‘CLEAR ALL’ to clear all the textfields.

d. Ms. Sheela works in a shopping mall. To calculate net payable amount she has developed the following GUI in NetBeans. The shop accepts payments in three modes- Cash, Debit Card, Credit Cards. The discount given as per mode of payment is as follows:

Mode of payment DiscountCash 12%Debit Card NilCredit Card 8%

If the Member check box is checked then the customer gets an additional discount of 5% on net payable amount.

i Write the code to make the textfields for Discount ( txtDiscount ) and Net Payable (txtNetPayable) uneditable.

ii Write code to do the followinga) When Calculate button is clicked the discount and net payable amount is calculated as per the given criteria and displayed in discount and net payable text boxes.b) When Clear button is clicked all the text boxes should be clear.c) Close the application when Exit button is pressed.

e. Shekhar is a junior programmer at ducom Enterprises. He created the following GUI in Netbeans.

Help him to write code for the following :i To calculate Income Tax to be paid and display in jTextField4 on the

click of the Command Button “Calculate Income Tax” as per the following condition:If the Basic is less than 50000 then IncomeTax = Basic*0.2And if it is greater than or equal to 50000 then IncomeTax=Basic *0.3

ii To calculate Salary and display in jTextField5 on the click of Command Button “Calculate_Salary”.Hint:Salary=(Basic + DearnessAllowance + HouseRentAllowance) – IncomeTax

iii To Clear all Text Fields on the click of Command Button “Clear”.

7 a Write a Java code that takes one integer type value from jTextField1. If value is negative then make it positive and replace that in the jTextField1. If value is positive then display the message using a label with suitable message: “Value is Positive”.

b Write Java code that takes the price of a pencil from jTextField1 and quantity of pencils from jTextField2 and calculates total amount as price * quantity to be displayed in jTextField3 and also find 10% tax amount to be displayed in jTextField4.

c. Write Java code that takes the price of a pencil from jTextField1 and quantityof pencils from jTextField2 and calculates total amount as price *

quantity tobe displayed in jTextField3 and also find 10% tax amount to be displayed injTextField4.

8 a The following code has error(s). Rewrite the correct code underlining all the corrections made :String str1 = SeemaSurakshabal ;int b;for(int b = 0 ; b < 3 , b++ ) {jTextArea1.showText(str1+"\n" ) ;str1 = str1 + b ; }

b. What is the output produced by following code fragment?float x = 9;float y = 5;int z = (int) (x/y);switch(z){case 1: x = x + 2;case 2: x = x + 3;default: x = x + 1;}System.out.println( “Value of x: “ + x );

b. Fill in the blanks:Class.forName("java.sql.DriverManager");_________ con= (Connection)DriverManager.getConnection("jdbc:mysql://____________/database","user","abcd");Statement stmt=(Statement) con._______________;stmt.____________________("SELECT * FROM ITEMS';");

c What is JDBC? What is the importance of JDBC in establishing database connectivity?

d Define inheritance with reference to object oriented programming.

9 a If a database "Student" exists, which MySql command helps you to start working in that database?

b. Sahil created a table in Mysql. Later on he found that there should have been another column in the table. Which command should he use to add another column to the table?

c. Pooja, a student of class XI, created a table "Book". Price is a column of this table. To find the details of books whose prices have not been entered she wrote the following query:Select * from Book where Price = NULL;Help Pooja to run the query by removing the errors from the query and rewriting it.

d. The LastName column of a table "Directory" is given below:LastNameBatra SehgalBhatia SharmaMehta

Based on this information, find the output of the following queries:i. SELECT lastname FROM Directory WHERE lastname like "_a%";ii SELECT lastname FROM Directory WHERE lastname not like "%a";

e. A table "Stock" in a database has 5 columns and contains 17 records. What is the degree and cardinality of this table?

f. Write an SQL query to create the table 'Item' with the following structure:

10 a What is the difference between Group by and Order by clause?

b A table Alpha contains 4 records and table Beta contains 7 records what will be total number of records in their Cartesian product?

c Consider the tables DOCTORS and PATIENTS given below:

DOCTORS

With reference to these tables, write commands in SQL for(i) and (ii) and output for (iii) given below:

(i) Display the Patno, PatName and corresponding DocName for each Patient.

(ii) Display the list of all patients whose OPD_Days are MWF.

(iii) Select OPD_DAYS, count(*) from DOCTORS,PATIENTS Where Patients.Department=Doctors.Department Group by OPD_DAYS;

d In a database there are two tables ‘BRAND’ and ‘ITEM’ as shown below:

Write MySql queries for the following:(i) To display ICode, IName and corresponding Brand of those items, whose price is between 20000 and 45000(both values inclusive)

(ii) To display ICode, Price and BName of the item which has IName as “Television”

(iii) To increase the Price of all items by Rs. 15%.

e Consider the following tables item and Customer. Write SQL Commands for the statement (i) to (iv) and give outputs for SQL queries (v) to (viii).

Table: ITEMI_ID ItemName Manufactur

ePrice

PC01 Personal Computer

ABC 35000

LC05 Laptop ABC 55000PC03 Personal

ComputerXYZ 32000

PC06 Personal Computer

COMP 37000

LC03 Laptop PQR 57000

Table: CUSTOMERC_I CustomerNam City l_ID

D e01 MRS REKHA Delhi LC0306 MANSH Mumbai PC0312 RAJEEV Delhi PC0615 YAJNESH Delhi LC0316 VIJAY Banglore PC01

(i) To display the details of those customers whose city is Delhi.(ii) To display the details of item whose price is in the range of 35000 to 55000 ( both values included)(iii) To display the customer name, city from table Customer, and itemname and price from table Item, with their corresponding matching I_ID.(iv) To increase the price of all items by 1000 in the table Item.(v) SELECT DISTINCT City FROM Customer;(vi) SELECT ItemName, MAX(Price), Count(*) FROM Item GROUP BY ItemName;(vii) SELECT CustomerName, Manufacturer FROM Item, CustomerWHERE Item.Item_Id=Customer.Item_Id ;(viii) SELECT ItemName, Price* 100 FROM Item WHERE Manufacture= ‘ABC’;

f Write the SQL query commands based on following table

(a) List the names of those students who have obtained DIV 1 sorted by NAME.(b) Display a report, listing NAME, STIPEND, SUBJECT and amount of stipend received in a year assuming that the STIPEND is paid every

month.(c) To count the number of students who are either PHYSICS or COMPUTER SC graduates.(d) To insert a new row in the GRADUATE table: 11,”KAJOL”, 300, “computer sc”, 75, 1(e) Give the output of following sql statement based on table GRADUATE:(i) Select MIN(AVERAGE) from GRADUATE where SUBJECT=”PHYSICS”;

(ii) Select SUM(STIPEND) from GRADUATE WHERE div=2;

(iii) Select AVG(STIPEND) from GRADUATE where AVERAGE>=65;

(iv) Select COUNT(distinct SUBDJECT) from GRADUATE;Biology

1. What is encystation?2. State the difference between meiocyte and gamete with respect to chromosome number.3. Name the units of vegetative propagation in water hyacinth. Explain giving reason why it

has become the most invasive aquatic weed.4. A moss plant produces a large number antherozoids but relatively only a few egg cells.

Why?5. Differentiate between a) oestrus and menstrual cycle. b)vivipary and ovipary.6. What is the major difference you observe in the ffsprings produced by asexual

reproduction and in the progeny produced by sexual reproduction?7. Write the function of coleoptile and scutellum.8. What is geitonogamy? Give its one similarity to autogamy and xenogamy.9. Draw a diagram of matured microscope of an angiosperm. Label its cellular components

only.10.Draw a diagram of a typical dicot embryo and label any four parts including the reduced suspensor.

11.Coconut palm is monoecious, while date palm is deoecious. Why are they so called?12.Differentiate between a) hypocotyl and epicotyl

b)integument and testa.c) coleoptile and coleorhiza.d) perisperm and pericarp.

13. Explain any two devices by which autogamy is prevented in flowering plants.14. The flower of brinjal is referred t as chasmogamous while that of beans is cleistogamous. How are they different from each other?15. Describe endosperm development in coconut.16. How does the megaspore mother cell develop into 7-celled, 8 nucleate embryo sac in an angiosperm? Draw a labelled diagram of mature embryo sac.17. Mention the fate of corpus luteum and its effect on the uterus in absence of fertilisation of the ovum in a human female.

18. Describe the events of spermatogenesis with the help of a schematic representation.19. How are assisted reproductive techonoogies helpful to humans? How are ZIFT and GIFT different from intra uterine transfers? Explain.20. A pea plant with purple flowers was crossed with white flower producing 50plants with only purple flowers. On seifing, these plants produced 482 plants with purple flowers and 162 with white flowers21. What are linked genes? How can a pair of linked genes be identified?22. List any four symptoms of the following a) Downs syndrome. b) Turners syndrome. c) Sickle cell anemia. d) thaslassemia.23. Draw a schemetic represention of dinucleotide.24. Explain the role of 35 s and 32 P in the experiments conducted by Hershey and chase.25. State the imporatance of genetic code in protein synthesis.26. Describe the process of initiation of transcription in bacteria.27. State the role VNTR in fingerprinting.28. What is semi- conservative DNA replication? How was it experimentally proved by Meselson and Stahl.29. Draw a labelled schematic structure of a transcription unit. Explain the function of each unit.30.Name the stage of plasmodium that gains entry into the human body.

Computer science1.Prepare a project on the topic already given to students using binary files in c++.It should have the following options:-1.Creation 1.Display 3.Display with condition. 4.Searching 5.Adding details.6.Updation 7.Deletion 8.Exit.It should use the classes only.The printed file should have the following:-1.Bonafide Certificate2.Index3.Acknowledgement4.Theory of project5.Hardware and software requirement6.Steps for project7.Program code(Input)8.Program outputs9.BibliographyEach student should have their own copy.

2.Prepare a practical file with printouts containing code, input and output and question along with the steps for program.It should have 12 programs.

PhysicsA: WORKSHEETSOLVE THE FOLLOWING QUESTIONS IN ASSIGNMENT SHEET

1. Name the EM waves used for studying crystal structure of solids. What is its frequency range?

2. Name the part of electromagnetic spectrum whose wavelength lies in the rage of 10−10m. gives its one use.

3. How are radio waves produced?4. What are the direction of electric and magnetic field vectors relative to each other

and relative to the direction of propagation of electromagnetic waves?5. Welders wear special goggles or face masks with glass windows to protect their

eyes from electromagnetic radiations. Name the radiations and write the range of their frequency.

6. To which part of the electromagnetic spectrum does a wave of frequency 5 × 1019

Hz belong?7. Name the phenomenon which shows the quantum nature of electromagnetic

radiation.8. Name the part of the electromagnetic spectrum of wavelength 10−2 m and mention

its application.9. Write the following radiations in ascending order in respect of their frequencies:

X-rays, microwaves, UV rays and radio waves.10. Which part of electromagnetic spectrum has largest penetrating power?11. A plane electromagnetic wave travels in vacuum along z-direction. What can you

say about the direction of electric and magnetic field vectors? m 4ono.com12. Name the physical quantity which remains same for microwaves of wavelength

1mm and UV radiations of 1600 Å in vacuum.13. Which of the following waves can be polarized (i) Heat waves (ii) Sound waves?14. How is the speed of em-waves in vacuum determined by the electric and

magnetic field?15. Name the electromagnetic radiations used for (a) water purification, and (b) eye

surgery.16. Answer the following questions: (a) Optical and radio telescopes are built on the

ground while X-ray astronomy is possible only from orbiting the earth. why?(b) The small ozone layer on top of the stratosphere is crucial for human survival.

Why?17. Draw a sketch of a plane electromagnetic wave propagating along the z-direction.

Depict clearly the directions of electric and magnetic. field varying sinusoid ally with z.

18. Identify the electromagnetic waves whose wavelengths vary as(a) 10−12 m < l < 10−8 m(b) 10−3 m < l < 10−1 m

Write one use for each.19. The oscillating magnetic field in a plane electromagnetic wave is given by

By= (8 × 10−8) sin [2 × 1011 τ + 300πx] T (i) Calculate the wavelength of the electromagnetic wave. (ii) Write down the expression for the oscillating electric field.

20. Arrange the following electromagnetic radiations in ascending order of their frequencies:(i) Microwave (ii) Radio wave (iii) X-rays (iv) Gamma rays Write two uses of any one of these.

21. How are infrared waves produced? Why are these referred to as 'heat waves’? Write their one important use.

22. (a) An em wave is travelling in a medium with a velocity v⃗⃗ = v i. Draw a sketch showing the propagation of the em wave, indicating the direction of the oscillating electric and

magnetic fields.(b) How are the magnitudes of the electric and magnetic fields related to the velocity of the em wave?

23. How does Ampere-Maxwell law explain the flow of current through a capacitor when it is being charged by a battery? Write the expression for the displacement current in terms of the rate of change of electric flux.

24. (a) Why are infra-red waves often called heat waves? Explain.(b) What do you understand by the statement, “Electromagnetic waves transport momentum”?

25. Answer the following: (a) Name the em waves which are suitable for radar systems used in aircraft navigation. Write the range of frequency of these waves. (b) If the earth did not have atmosphere, would its average surface temperature be higher or lower than what it is now? Explain. (c) An em wave exerts pressure on the surface on which it is incident. Justify.

B: RECORD WORK Complete the practical record for section A (7 experiments) , Section B (8

experiments) and activities (5)

C: PROJECT Prepare a working model based on any of the following topic:

Electricity Magnetism Optics Electronics

Make a project report (of the model) comprising: Acknowledgement Declaration Index Aim of the project Materials used Circuit diagram/ construction Theory Procedure Uses Scope for improvisation Bibliography

ChemistryAnswer the following

1. write the difference between physisorption and Chemisorption with respect

to the following (1) specificity (2)Temperature (3)Reversibility (4)Enthalpy change

2. Define the following (1)Adsorption (2) sorption (3) desorption3. why is finely divided substance more effective as an adsorbent4. why is adsorption always exothermic5. what type of force are responsible for the occurrence of Physisorption6. what is meant by shape selective Catalysis7. Explain how the phenomenon of adsorption finds application in each of the

following process (1) productions of Vacuum (2)Heterogeneous Catalysis (3) Froth floatation Process

8. What is adsorption isotherm ? Explain Frendlich adsorption Isotherm9. write the dispersed phase and dispersion medium of the following colloid

(1)Smoke (2)milk (3)Cheese (4) Fog (5) butter10.what are lyophilic and lyo phobic colloid ? which of these sols Can be easily

coagulated on the additions of Small amount of electrolyte11.what is the difference between oil / water and water/oil type emulsion? Give

an example12.what is the difference between multi molecular and macromolecular colloid ?

Give an example13.Define the term (1) Associated colloid (2) peptization (3)Kraft temperature

(4)Micelle14.what happens when freshly precipitated Fe(OH)3 is shaken with water

containing a small quantity of FeCl315.A delta is formed at the meeting place of sea and river water . why?16.Explain what is observed when(1)an electric current is passed through a sol

(2)a beam of light is passed through a sol17.Define Coagulation.• Give a method by which coagulation of lyophobic sols

carried out18.Explains (1)Electrophoresis (2)Dialysis (3)Tyndall effect19.Classify colloids where the dispersion medium is water. state their

Characteristic and and one example20.what are emulsion ? state one application of emulsification

LESSON/TOPICMETALLURGY

Answer the following1. Name the method used for the refining of Nickel and Titanium metal ?2. which solution is used for the leaching of silver metal3. out of C or C0 Which is a better reducing agent at the lower

temperature in the extraction of Iron from its oxide4. what is the role of Silica in the metallurgy of copper5. What is the composition of copper matte6. what is the role of cryolite in the metallurgy of Aluminium7. Name the method used for refining of copper metal8. How is (1) wrought iron different from steel (2) cast iron from steel9. outline the principle of Zone refining and Vapour phase refining10.Name the principle ore of aluminum . Explain the importance of

leaching in the extraction of Aluminium with chemical equation11.what is the role of depressant and Collectors In froth floatation

process12.which reducing agent is employed to get copper from the leached low

grade copper ore13. write the principle of Hydraulic washing , Froth floatation method,

Electrolytic refining14.what is the role of Zinc metal in the extraction of silver15.write the Chemical reaction involved in the extraction of silverfrom

silver ore16.write the role of CO in the purification of nickel and in the extraction of

iron17.write the role of graphite rod in The metallurgy of Aluminium18.Describe the principle of Mond Process of refining of nickel19.State the Principle of liquation method20.write the reaction involved in the recovery of gold , after gold ore has

been leached With NacN

LESSON/TOPICALCHOL ,PHENOL ,ETHER

Answer the following1. Explain why phenols are more acidic than ethanol2. How will you Distinguish between Phenol and benzoic acid3. How would you convert the following (1) Phenol to benzoquinone (2)

benzene to phenol(3) picric acid from phenol4. Draw the Structure of 2,6 dimethyl phenol5. Account for The following (1) Ortho-nitrophenol. is more acidic than Ortho

methoxy phenol (2) Phenol does not give protonation reactions readily6. Write The equation involved in Reimer-Tiemann reaction7. Name the reagents used in the (1) Bromination of Phenol to 2,4,6,-

tribromophenol (2)nitration of phenol to 2,4,6 tri nitro phenol (3) phenol to benzene

8. why Ortho and Para nitro phenols are more acidic than phenol9. While separating a mixture of Ortho and Para nitro phenols by steam

distillation,which one is steam volatile10.Give the equations (1)Phenol from Cunene(2) phenol from chloro

benzene(3)phenol to anisole (4)Aniline to phenol (5)phenol to 2-hydroxy acetophenone

11.Explain how does the OH group attached to carbon of benzene ring activate it towards electrophillic Substitution

12.Explain Kolbe 's reaction13.Dipole moment of phenol is smaller than that of methanol . why14.Write the equation involved in the acetylation of salicylic acid15.p-nitrophenol. is more acidic than p-methylphenol16.Bond length of C- O bond in phenol is shorter than that in methanol17.what happens when phenol is treated with CH3COCl and anhydrous AlC1318.p-nitro phenol is more acidic than o-nitro phenol19.phenol is more easily nitrated than Benzene20.Explain The mechanism of the following CH3 -CH2-OH → CH2=CH2 + H2O

NUMERICALS

1. Calculate the osmoic pressure in pascals exerted by a solution prepared by dissolving1.0 g of polymer of molar mass 185000 in 450 mL of water at 27°C. (R = 8.314 Jmol–1k–1).

[Ans. : 1.35 × 103 Pa]2. How much urea (mol. mass 60 g mol–1) must be dissolved in 50 g of water so that

the vapour pressure at the room temperature is reduced by 25% ? Also calculate the molality of the solution obtained. [Ans. : 55.55 g and 18.5 m]

6 Henry’s Law constant for CO2 dissolving in water is 1.67 × 108 pa at 298K. Calculate the quantity of CO2 in 1L of soda water when packed under .5 atm of CO2 pressure at 298K. [Ans. 3.707 g]7.An aqueous solution of glucose of molar mass 180 g mol –1 boils at 100.01°C. The molal boiling point elevation constant for water is 0.5 K kgmol–1. What is the number of glucose molecule in the solution containing 100 g of water. [Ans. : 1.2 × 1021 molecules]8. 75.2 g of Phenol (C6H5OH) is dissolved in 1 kg solvent of Kf = 14 Km–1, if the depression in freezing point is 7K, then find the % of phenol that dimerises. [Ans. : 75%]9 A reaction is 20% complete in 20 minutes. Calculate the time required for 80% completion of reaction, If reaction follows the first order kinetics. [Ans. : 144 min]10 A certain reaction is 50% complete in 20 min at 300K and the same reaction is again 50% complete in 5 min at 350K. Calculate the activation energy if it is a first order reaction. R = 8.314J K–1 mol–1, log 4 = 0.602) [Ans. : 24.206 kJ/mol]

11 Calculate (a) molality (b) molarity and mole fraction of KI if the density of 20% (mass/mass) aqueous KI is 1.202 g/mL. [Ans. : (a) = 1.5 m, (b) = 1.45m (c) = 0.0263 12. Two liquids X and Y on mixing form an ideal solution. The vapour pressure of the solution containing 2 mol of X and 1 mol of Y is 550 mm Hg. But when 4 mol of X and 1 mole of Y are mixed, the vapour pressure of solution thus formed is 560 mm Hg. What will be the vapour pressure of pure X and pure Y at this temperature?

[Ans. : px = 600 mm Hg; py = 400 mm Hg] 13. A zinc rod is dipped in 0.1M solution of ZnSO4. The salt is 95% dissociated at this dilution at 298K. Calculate the electrode potential Zn2+/ Zn= – 0.76V . [Ans. : –0.7902V] 14. Zinc granules are added in excess to 500 mL of 1.0 M nickel nitrate solution at 25°C until the equilibrium is reached. If the standard reduction potential of Zn2+ | Zn and Ni2+ | Ni are –0.75 V and – 0.24 V respectively, find out the concentration of Ni2+ in solution at equilibrium. [Ans. : 5.88 × 10–18M]

. Chemistry:• Chemistry Practical Record Completion• Salt Analysis-6• Volumetric Analysis -4• Organic Analysis-5• Preparation of Compound-4• Investigatory Project Based on The Topic Prescribed in The CBSE Curriculam-1

Physical educationRecord File writingPractical-1; Fitness tests administration for all items.Practical-2; Procedure for Asanas, Benefits & Contraindication for any two Asanas for each lifestyle disease.Practical-3; Procedure for administrating Senior Citizen Fitness Test for 5 elderly family members.Practical-4; Any one game of your choice . Labelled diagram of field & equipment(Rules,Terminologies & Skills).Games ( Basketball, Football, Kabaddi, Kho-Kho, Volleyball, Handball, Hockey, Cricket, Bocce & Unified Basketball [CWSN {Children With Special Needs-Divyang} ]

Fine arts-paintingDO ANY SELECTED 10 WORKS.CAN PAINT FULL 16 WORKS ALSO IF INTERESTED