VISHWA BHARATI PUBLIC SCHOOL NOIDA
HOLIDAY HOMEWORK (2010-2011)
CLASS XII
SUBJECT ; ENGLISH
I Do the following questions in your writing skills register -
1. You are Rohit/Roopali. As President of the Students’ Council of St. Francis Sr. Secondary School, Bangalore, you have invited a visiting Russian Ballet Troupe to give a performance in your school on the occasion of its golden jubilee celebrations. Write a notice in about 50 words informing the students about this event.
2. You are the Director, Physical Education of your school. Your school is playing against CPM School, Meerut in the Zonal Volleyball finals. Write a notice in about 50 words for your school notice board inviting your school students to come and watch the tournament and cheer the team.
3. Read the lesson “Lost Spring” by Anees Jung from your English reader. Using ideas from the lesson together with your own ideas, write a letter to the Editor, the Hindustan Times, New Delhi commenting on the issue of child exploitation and pointing out some solutions to the problem.
4. You are Ravi/Rajani, living at 5 Bahadur Shah, Zafar Road , New Delhi. There is a frequent power-cut and voltage fluctuations in your colony causing great inconvenience and damaging Electrical Appliances. Write a letter to the Assistant Engineer of the Electricity Board of your area explaining the difficulties you face, seeking quick action.
5. Read the following lessons from your text-book:
i. Indigo By Louis Fischer
ii. The Interview
1. PART I Christopher Silvester
2. PART II An Interview With Umberto Eco
On the basis of your reading of these lessons, make notes on them using recognizable abbreviations. Also summarize each of them in about 80 words.
6. Collect five formal and five informal invitation cards meant for different occasions and paste them in your register.
7. Collect five classified and five non-classified advertisements from the newspaper and paste them in your register.
II Book Review
Books Recommended 1. The Difficulty of being Good By Gurshran Das
2 The Two States by Chetan Bhagat
3. The Secret by Rhonda Bryne
Read any one of the above Books and write a Review in 150 words.
SUBJECT : COMPUTER SCIENCE
Develop a project in C++ which should cover the following areas
a. Problem Solving
b. Data Structure
c. Object Oriented Programming in C++
d. Data File Handling
Theme of the project can be
• Any subsystem of a System Software or Tool
• Any Scientific or a fairly complex algorithmic situation.
• Business oriented problems like Banking, Library information
system, Hotel or Hospital management system, Transport query
system
• Quizzes/Games;
• Tutor/Computer Aided Learning Systems
SUBJECT :PHYSICAL EDUCATION
1. Draw a diagram of any one game sports court and field with all specifications
2. Briefly define the History of one game/sports.
3. Explain any 6 Fundamentals skills of one game/sports.
4. Explain any 8 important tournament.
5. Explain any 8 National & International sports Personalities.
6. Explain 10 Terminologies any one game/sports.
SUBJECT: Psychology
Do the Practicals given on Personality and School Adjustment for students in Details with complete Systematic Format used for Practicals.
SUBJECT : MULTIMEDIA AND WEB TECHNOLOGY
Case Studies are to be divided into following parts:
Case study Part 1(Collection, Editing and Creation of Website Resources):
Create an electronic movie with various pictures, audio clipping, movie clippings, and factual text related to school / organisation;
Introduction to 3D Animation
Embedding video and audio in web pages.
An introduction to interactive walk-through.
Embedding walk-through into web pages.
Designing a simple game
Design of a story board
Case Study Part 2(Development of Web Content with resources):
Case studies covered in class XI with database support with Login, Online Registration, Booking and/ or ordering facility.
Sample Case Study
(Note: Other similar type of case studies can also be used for the project work)
Mr. Verma is the CEO of copsi soft drinks (I) Ltd. His company is having a wide network of distributors for copsi branded soft drinks. With the increase in sales and distribution network, it is required to adopt a new technological intervention in the existing system. He wants that the company should have a global presence over the widely popular medium, called World Wide Web. Assume that you are appointed as the senior person of the development team. You are required to collect the company information and its current requirement. For your easiness we have collected the details of the company which are as follows:
The company Information:
Name of the Company: copsi soft drinks (I) Ltd.
164
Zone: East, West, North and South
Distributors: All over the world.
Mr. Verma said that the web site should be able to reflect company in terms of :
Home Page
Product & Promotion Page
Distributor Login Page / Password Recovery Page
Distributor Specific Details Page
Registration Page for Distributor-ship
Company News and Flashes
Company Profile
Technical Details:
Web site Introduction is to be made in flash.
A proper database is to be maintained for the distributor information.
Note:
For developing the above sites/movies collect the actual information from various sources.
It is advised to break up the above-mentioned case studies into smaller modules as per
coverage of the course.
You can provide alternative case studies also of similar kind also.
SUBJECT : PHYSICS ASSIGNMENT – CURRENT ELECTRICITY
- Calculate the amount of current through an electric toaster if it takes 900C of charge to toast two slices of bread in 1.5min. (10A)
- A 12V car battery supplies 1x103C of charge to the starting motor. How much energy is used to start the car? (1.2x104J)
- An electric toaster uses a current of 10A for 125S to make toast, while giving off 1.5x105J of heat energy. What is the potential difference across the toast? (1.2x102)
- While a battery supplies current the number of electrons leaving the negative terminal will be equal to the number of electron coming to the positive terminal, then why the emf of the cell decreases?
- A car requires a 12V battery to start the motor. With the help of eight button cells of emf 1.5V each can we start the motor. If not, why?
- The given network is made of equal resistors ‘R’, if the equivalent resistance between A and B is 8Ω, find ‘R’.
- Two cells of emfs 4.5V and 6.0Vand internal resistance 6Ω and 3Ω respectively have their negative terminals joined by a wire of 18Ω and positive terminals by a wire of 12Ω resistance. A third resistance wire of 24Ω connects middle point of these wires. Draw the circuit diagram. Using Kirchhoff’s laws, find the potential difference at the end of this third wire.
- Find V2, V4, V5, I1 and I4.
(20V, 16V, 16V, 6A, 1A)
- Find I2 and I3.
(4A, 8A)
- Draw a schematic diagram of a circuit consisting of a power source and one resistance connect in series with a combination consisting of two resistors connected in parallel with each other. Include a fuse, a switch, a voltmeter and an ammeter. The fuse should protect the whole circuit, the switch should interrupt the whole circuit, the voltmeter should measure the potential difference across the series resistor and the ammeter should measure the current through one of the parallel resistors.
- What condition must be assure in order to determine the emf of a battery by placing a voltmeter across it?
- A current of 2.5A is passed through a wire of which the length is 1m and diameter 2x10-3m. If the specific resistance of the material of the wire is 2.52x10-8Ωm, what will be the potential difference between the ends of the wire?
- A carbon resistor of 47KΩ is to be marked with rings of different colours for its identification. Write the sequence of colours. What is the temperature coefficient for the material of the filament?
- AB is 1m long uniform wire of 10Ω
resistance. The other data are shown
in the circuit diagram.
Calculate (i) Potential gradient
along AB, and (ii) length AO of the
wire, when the galvanometer shows
no deflection.
- A battery of e.m.f, ‘E’ and internal resistance ‘r’ gives a current of 0.4A with an external resistor of 12Ω and a current of 0.25A with an external resistor of 20Ω. Calculate the internal resistance and e.m.f of the cell.
16. In the circuit shown, the heat generated by 4Ω resistance due to the current flowing in it is 40 calories per second. Find the heat generated per second across 2Ω resistance.
- Two bulbs are marked 60W,220V and 100W,220V. These are connected in parallel to the 220V mains. Which one of the two will glow brighter? X 2Ω
- Find the value of unknown resistance X
and the current drawn by the circuit from G
the battery, if no current flows through the 120cm
galvanometer. Assume the resistance per 200cm
unit length of the wire AB to be 0.01Ω/cm.
4V
19. B
5Ω 2Ω
10Ω Show that current flowing from B to D is Zero.
10Ω 4Ω
D
5V 10 Ω
8V 370 Ω
20. A 1m long wire AB of uniform area of cross-section and 30 Ω
resistance is used as a potentiometer wire. This wire is
connected in series with a battery of 8V and a resistor A 700cm B
of 370 Ω. An unknown e.m.f is balanced at 700cm of the
wire as shown in the figure. Calculate E G
(i) the potential gradient for the potentiometer wire
(ii) the value of unknown e.m.f E.
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SUBJECT : Biology UNIT I - REPRODUCTION
Preconcept
The student should know the meaning of Reproduction, its types asexual and sexual.
The student should also know what are gametes and what is their function, how is a zygote formed.
TEST YOURSELF by attempting the following questions: -
1. When one parent is involved to give rise to offspring it is called ______.
2. The type of reproduction which leads to variations is ______.
3. The number of chromosomes in a zygote is ______.
4. The number of chromosomes in a gamete are ______.
5. Lower plants multiply generally by ______.
6. Bacteria multiply by ______.
7. The technique by which the plants such as potato and ginger reproduce are ____.
8. The yellow coloured structure carried by insects to the stigma is ______.
9. The flask shaped structure which forms the fruit is called______.
10.The colored leaves of flower attract insects for ______.
Multiple Choice Questions
1. Examples of sexually transmitted diseases spread by bacteria are: -
a) malaria and cholera b) syphilis and gonorhoea
c) AIDS and Herpes d) Hepatitis-B and genital warts
2. The technique of treating infertile parents by transferring an ovum from a donor into the fallopian tube who cannot produce one but can give suitable environment for development is: -
a) ZIFT b) MTP c) GIFT d) ART
3. The best way of prevention from STD's is
a) Oral pills b) Natural barriers c) Condoms d) surgical methods
4. Trichomoniasis is sexually transmitted disease caused by
a) viruses b) protozoa c) bacteria d) fungi
5. The signals introduced for parturition arise from foetus and placenta leading to mild uterine contractions are called
a) lactation b) stimulatory reflex c) expulsion d) foetal ejection reflex
6. The residual persistent nucellus is called: -
a) perisperm b) endosperm c) ectoderm d) endoderm
7. The structures which help in vegetative reproduction are also called as
a) gemmules b) vegetative propagules
c) apomicts d) none of the above
8. Those mammals which are active only during their reproductive phase are called as:-
a) seasonal breeders b) non breeders
c) continuous breeders d) all of the above
9. All organisms have to reach a certain stage of growth and maturity before they can reproduce, this is called as: -
a) vegetative phase b) juvenile phase
c) diploid phase d) haploid phase
10. Bisexual condition in fungi is called as: -
a) hermaphrodite b) pistillate c) homothallic d) heterothallic
One mark Questions
1. What is colostrum? How is it beneficial to a new born child?
2. Give the scientific terms used for the following: -
(a) Morphologically and genetically similar individuals derived through asexual reproduction.
(b) Cyclical changes shown by seasonal breeders.
3. Give two adaptations of the pollen grains in hydrophilous plants.
4. What are teratogens? How are they harmful to a developing foetus?
5. Give one difference between antrum / liquor folliculi.
6. What is the specific role of synergids in fertilization?
7. Give two examples of plants which grow vegetatively by
a) leaves b) stem c) roots
8. Give one difference between (a) Monoecious / Dioecious (b) zoospore / conidia.
9. Draw the diagram of male gametophyte at the time of shedding stage.
10. What is the main difference between Xenogamy and Geitonogamy?
11. Why is the offspring formed by asexual reproduction referred to as clone?
12. Differentiate between syngamy and fertilisation?
13. What are vegetative propagules?
14. Why are cucurbits referred to as monoecious?
15. Why are pollen grains produced in enormous quantity in Maize?
16. What is mesovarium?
17. Name some extra embryonic membranes?
18. Does the production of test tube babies improve the human race?
19. Name the organisation that produced ‘Saheli’ pill.
20. List two most common STDs.
Two marks each
1. Describe the steps leading to the entry of sperm in an ovum for fertilization.
2. How is polyspermy prevented? What happens if polyspermy occurred?
3. Briefly detail the events of sporulation. Name two organisms which display sporulation.
4. Explain the role of placenta as a hormonal tissue? Give at least four examples of hormones produced by it?
5. Give scientific terms for the following