SESSION - 2019-2020
CLASS: I
SUBJECT: ENGLISH
Make colourful cut outs of – rainbow, clouds, sun, moon, stars.
Learn the poem“ CLOUDS AND RAINBOW” with expression and action.
Reading practice of the lesson – “The Tiger and the Mosquito” and other
stories from textbook.
5 pages of handwriting practice using 4 lines in notebook.
SUBJECT : EVS
Paste pictures of any 5 places of worship and write their names.(In A4 size
white sheet)
–



, , ,
SUBJECT : MATHS
Make number cards of any 10 numbers between 1-50 using cardboard and
coloured papers.
Make any 5 shapes/figures using matchsticks.(In A4 size white sheet)
CLASS: II
SUBJECT: ENGLISH
Learn the story “ THE GREEDY DOG” with expression and action.
Paste pictures of your grandparents in English notebook.
Reading practice.
SUBJECT : E.V.S.
2. Cut And Paste Activity :
a. Cut shapes of different phases of moon using a white paper and paste it on
a black paper.
b. Make a rainbow using colourful strips of paper on an A4 size sheet.
(Scissors to be used under parents’ supervision. )
-
A4 :-
2. 5-5
3.
4.
5. 18 20
Subject – Maths
1. Project Work: (In A4 Paper)
a) Draw 3 figures using Standing Line, Sleeping Line, Slanting Line and Curved Line.
b) Draw a Monkey, 3 matchsticks away from a Banana.
c) Use matchsticks to draw and decorate anyone of the following: (In a scrap book
page)
i) Your Name ii) A Hut iii) An X-Mas Tree.
2. Learn and write spellings of 1 to 100 in an A4 Sheet.
3. Practice Addition & Subtraction Sums of daily.
CLASS – III
SUB – ENGLISH
2. Write in A4 papers -
a) Past form of – catch, give, come, Say, take, is, will, can, grow, tell.
b) 10 “ing” words with pictures.
3. Learn all the question and answers from the lessons present in the syllabus of Periodic
test 2.
4. Learn all the spellings of new words from the lessons present in the syllabus of
Periodic test 2.
*Draw your favourite game on A4 size paper.
*Point out 'Rajasthan, Assam ,Kashmir and West Bengal on the map.
*Learn all question and exercise of lessons 13 to 17.
* Weave the paper through different color paper.(hint:- page no. -157 of book)
–
1. ( 9,10,11,12 ) – I
A4 :-
2. 5 , I
3. - / I
4. I
5. I
6. I
SUB – MATHS
Q1 Learn the multiplication table from 2 to 12
Q2 Make your own patterns (any 4 ) in A4 size paper.
Q3 Write all odd numbers between 50 to 100 in A4 size paper.
Q4 Write all even numbers between 101 t0 150 in A4 size paper.
Q5 Practice multiplication sums. e.g 26 x14
x 20
Q6 Make at least 2 secret messages.
Q7 Draw 5 vessels having capacity of more than 1 litre and less than 1 litre in A4 size
paper.
Q8 on greeting card write message HAPPY NEW YEAR .
Q9)Number these names in the alphabetical order in which they will come
YogeshPritamSanjana
AbhinavKoyalEesha
Q11 Multiply and find the product :
9 8 1 2 1 6 1 7
x9 x 7 x 9 x 6 x 7
___ ___ ______ _____ ______
CLASS – IV
SUB – ENGLISH
1. As I walked to my school I saw a dog/cow..............
continue the story of the cow or dog on the road and complete it within 10
lines (A4 Size Paper).
2. Make two sentences each with the similar sound but different meanings (A4
size paper)
Right write, No Know, Principal Principle, Tall Tale, Hear Here.
3. Learn all the plurals from the story "The Giving Tree".
4. Write ten lines about your favourite Story Book or School Library.
5. Write five words each ending with
---ell ---ail, ---ee ---ook
6. Learn all the questions and answers of all the lessons in periodic Test-2.
SUB – EVS
Collect the pictures of currencies of 5 different countries and paste them. Also write the name of country.
Make a list of 5 different spices and paste their samples or pictures.
Make a list of 5 famous women personalities along with their pictures.
Write how the birds use their beaks and draw them along with their names.
Draw a plant and label its different parts.
Draw 3 implements used for growing onion crops and write their names and uses.
–
1. –
2.A4 size - ()
() () ()
()
3.
4. –
5.
----------
-------
6.
7.
8.
9.
SUBJECT: MATHEMATICS
Practice time of page number 106 0f Text-book
Number towers from Play with patterns
Secret messages from Play with patterns
How many notes will you get in return if you want a change of Rs 400
1. All 100 rupee notes
2. All 50 rupee notes
3.All 20 rupee notes
4.All 5 rupee notes
Questions based on postal rates of page number 145 of Text book.
b) Learn multiplication tables up to 20
c) Practice all exercises of Unit 9 to 12 for Periodic Test 2.
CLASS V
SUBJECT: ENGLISH
Q1] DO in A 4 paper
a] pg 113 –Q 1 ; pg .122 ; pg 125 –Q 2 ; pg 126 –Q 4 ;pg 127 –Q6 ;
pg 133 –Q 2 ; pg 141 –Q 5 ; pg 143 – Q 143 ; pg 150-- Q opposites
Q2] Learn the meanings and spellings of new words from
UNIT---7 , 8 and from the poem --Sing a song of people
Q3] Learn RHYMING words from ----
Pg 142 ; 134 ; 113 ;
a] what will you do to keep your house clean
b] You find yourself in the land of dwarfs !
c] How you can be a good friend .
d]Any sea animal.
f] your favourite teacher
Subject – EVS
1. Project Work: ( In A4 paper) a) Write few lines about women achievers of India in games and sports with
pictures. [Hints: Name of the sportswomen , Name of the game, Achievement]
2. Do in A4 paper:The major dams in India and the river on which they are built along
with the pictures.( Any 6)
3. Write the names of different agricultural tools needed for farming and paste the
pictures. (A4 page)
4. a)Map Work: point out the states in the map of India with very thick forest, Less
thick forest,.( page 188 of textbook)
b)Mark all the states in India showing the capitals.
5. Learn: all the question-answers of all the lessons present in the syllabus of Periodic
Test-2 ,Lesson 12 to lesson 17.
6. Practice map pointing.
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) ?
) - ?
) ?
02) ;
,, ,,.
03) 25 .
04) 25 .
05) 25 .
06) - ;
,,,,,,,,,, ,
,,,, ,,,,.
Subject – Mathematics 1. (a) Write in decimal
200 + 30 + 5 + 1
10 +
2
10 = ___________________________
2. Draw a deep drawing of your class room with door, window. 3. Draw the tally marks of 25 4. Length 11cm perimeter 44cm width = ? 5. The fencing of a square garden is 20m. in length. How long its one side of the garden ?
6. Subtract 1.2 from 3.85. 7. 99 centimetre = metres. 8. Write as fraction 2.306 = ____________________ 9. Draw a shape which can be made into a box. 10. The cost of 100 kg wheat is Rs.500. Find the cost of 30 kg of wheat.
11. Find 1
3 of one hour.
12. An egg costs two and half rupees. How much will half dozen cost ? 13. Find the product 2.21 × 20 = 14. If the side of a Square is 6cm, then what is its area ? 15. 1 metre 5 centimetre = _____________________m.
HOLIDAY HOMEWORK FOR WINTER VACATION
(SECONDARY AND HIGHER SECONDARY SECTION)
SESSION – 2019-2020
Class- VI
2. How does Municipal Corporation collect its fund?
3. What are the different types of mountains? Discuss.
4. Discuss various works of a Patwari.
5. Describe work of the Gramabhojaka. Why do you think he was powerful?
6. What are the advantagesof Plain area?
7. Discuss three major domains of earth? And Layer of Earth.
8. Why did Ashoka launch Dhamma?
9. Why did kings want to control silk route?
10. Who is SHO?
11. Who wrote Arthashastra?
12. ( 100 )
1)
2)
13. –
•
•
SUBJECT- SCIENCE
14. Write all the VSA type questions (fill in the blanks, true/ false, match the following) given in
NCERT textbook from the chapters coming in the upcoming examination.
15. Draw a circuit connecting a bulb with the help of a battery of two cells, wire and a switch.
16. Write any two adaptations of organisms living in
3) Aquatic habitat
4) Mountains
5) Deserts
6) Grasslands
17. Revise all the exercise questions of the chapters coming in the PT-2
SUBJECT- SANSKRIT
.- (Assignment)
1. (8) (11)
2.”: :”
. (Project work)
1. (P.NO.88)
2. | ,,,,, (P.NO.89-91)
SUBJECT- ENGLISH
My aim in life.
2. Write a letter to your friend describing how you spent your winter break.
3. Draft a notice for students’ notice board, informing them that you have lost some library books
in the computer lab two days back. Request the finder to return it to you. Promise a suitable
reward to the finder.
4. What did the crocodile say to the monkey midstream? How did the monkey save himself?
5. What did Saeeda tell the sun rays to do? Why were the sun rays keen to go down to the earth
the next day?
2. What is row, column and cell?
3. What is quick access toolbar, ribbon, name box and formula bar?
Subject: Maths
1. ( 150 )
) -
) /
2. –
18.
19.
-
Subject: Social science
1 Write the main teaching of Kabir and Baba Guru Nanak.
2Name the tribal community of the India and its culture.
3 Explain the Ganga Brahmaputra basin under following heads
Location, climate, natural vegetation and occupation of the people
4Write the advantages and dis advantages of media...
5Name the means of transport and write the advantages of railways
Subject : Sanskrit
.- (Assignment)
1. (9) (12)
2. ()
. (Project work)
1. ,,,, (P.NO.93-95)
2. ,,, ,,,, ( ) (P.NO.96-99)
Subject: English
• Write a paragraph of about 100 words on the following topics.
7) The importance of trees.
8) Freedom is life.
9) My favourite game
• Write a letter to your friend about your new pet at home.
• Write a letter to your friend describing about how you spent your winter vacation.
• Write a paragraph about fire safety measures.
• The old bird said that Chandni was the winner. Discuss.
Subject : Computer
Class-VIII
Subject-Hindi
a. 20 –
b. - –
, , , , , , ,
c. - –
, , , , , , ,
d.
Subject-Sanskrit
.- (Assignment)
1. (9) (12)
2.” ” (10)
. (Project work)
1.”:”
2.
(P.NO.119)(P.NO.120)(P.NO.121)
Subject-English
• Write a letter to your friend describing the winter season in a hill station, you visited during
your winter break.
• Vera was a girl of high intelligence as well as possessed an imaginative brain. Explain with
reference to the story ‘The Open Window’.
• The narrator in the story Jalebis concluded that if god had granted man whatever he
demanded for, then man wouldn’t have learnt the art of making jalebis. Explain.
• Imagine you are Ernest. Narrate the story that his mother told him.
• Write a prank story along with humour, in about 100- 150 words.
Subject: SOCIAL SCIENCE
• What are the similarities between information technology industry in Bengaluru and
California ?
• Why Adivasis are becoming increasingly marginalized ?
• How the condition of women improved during 19th century ?
• Examine the work of social reformers to improve the condition of untouchables ?
Subject: MATHEMATICS
1] Visualising solid shapes –exercise 10.3 sum no. [1 to 8]
2] mensurartion - exercise 11.1 - sum no.[4,5]
Exercise 11.2 - sum no. [1 to 5]
Exercise 11.3 - sum no. [1 to 10]
Exercise 11.4 – sum no. [3,4,5]
3] exponents and power - exercise 12.1 - sum no. [1 to 7]
Exercise12.2 -sum no. [1 to 4]
4] direct and inverse proportion - exercise 13.1 - sum no. [7-10]
Exercise 13.2 - sum no . [4to 11]
5] factorisation - exercise 14.1 – sum no. [2&3]
Exercise 14.2 – sum no. [2 to 4]
Exercise 14.3 – sum no. [4&5]
SUB- SCIENCE
1. Practice diagrams (3 times) from chapters – 9 & 17.
2. Write all the VSA type questions (Fill ups, MCQ,T/F etc) 2 times and revise them.
3. Prepare a table containing information of the planets of our solar system with their pictures.
4. Revise the syllabus for PT-2 (Ch- 9,10,13, 14, 15 & 17)
Subject: Computer
1. What is DBMS and RDBMS?
2. What is Entity , Query, Form?
3. Name the different data types in Access and write short notes on them.
CLASS- IX
Subject: MATHEMATICS
1. Prove that area of equilateral triangle is equal to √3/4a² where a is the side of triangle.
2. ABC is a triangle in which angle BAC=30°. Show that BC is the radius of circumference of triangle
ABC is O.
3. Each edge of a cube is increased by 50% find the percentage increase in the surface area of the cube.
4. . Find the value of a and b so that the polynomial (x4 + ax3 – 7x2 – 8x + b) is exactly divisible by (x +
2) as well as (x + 3).
5. From a right circular cylinder with with height 10 centimetre and radius of base 6 CM right circular
cone of same height and base is removed find the volume of remaining solid.
6. Find the area of trapezium whose parallel sides are 25 CM 13 cm and other sides are 15 CM and 15
CM.
7. If a triangle and parallelogram are on same base and between same parallels then prove that area of
the triangle is equal to half the area of the parallelogram.
8. XY is a line parallel to side BC of a triangle ABC if BC ll AC and CF ll AB meet XY at E and F
respectively ,show that
Ar(ABE)=ar(ACF) .
.
.
10. A Field is in the shape of trapezium whose parallel sides are 25m and 10 m. The non parallel sides
are 14m and 13 m ,find the area of the field.
11. Prove that a cyclic parallelogram is a rectangle.
12. At a ramzan Mela, stall keeper in one of the food stall has a large cylinder vessel of base radius 15
CM filled up to a height of 32 centimetre with orange juice the juice is filled in small glasses of radius
3cm up to a height of 8 centimetre and sold for rupees 3 each. How much money does the stall keeper
received by selling the juice completely?
13. If two intersecting chords of a circle make equal angles in the diameter passing through their point
of intersection prove that the chords are equal.
14. A corn cob somewhat like a cone has the radius of ITS broadest end as 2.1 cm and length (height)
as 20 cm. If each 1cm² of the surface of the cob carries an average of 4 grains and how many grains
you would find on the entire cob?
15. If x = (3+√8) find the value of (x²+1/x²).
16. A cube of 9 CM edge is immersed completely in a rectangular vessel containing water if the
dimension of the base are 15 CM and 12cm find the rise in water level in the vessel.
17. Prove that equal chords of a circle are equidistant from centre
18. 2. A river 3 m deep and 40 m wide is flowing at the rate of 2 km per hour. How much water(in
litre) fall into the sea in 3 minutes?
Subject: Social Science
1 What is food security? Why we need food security in India?
2 Define the green revolution Write the advantages of green revolution.
3What is monsoon? How its affect the climate of India?
4How a person become the prime minister of India? Write the power of Indian prime minister.
5 Explain the main functions of Indian parliament.
6 Explain the process of elections.
7 Explain the types of natural vegetation.
8 An outline map of India show the following
1 Nation parks
Subject: English
LONG QUESTIONS:
20. Animals also feel the pleasure of love and pain of separation.
What would have you done if you were in place of the author’s family?
21. Behrman sacrificed his life for someone he did not know. It was supreme sacrifice and selfless
service. Discuss.
22. Write an article in about 150 words on – Gardening as a hobby.
SHORT QUESTIONS:
• What was Jerome’s real intention when he offered to pack?
• What is the effect of hacking and chopping a tree?
Subject: Sanskrit
I.( Assignment )
I. “ “ - : : :
Write the following topics from the book Abhyaasavan bhava
i. (10)
Translate 10 Hindi sentences into Sanskrit.
ii.
Collect any 3 Pictures and describe each in 5 sentences in Sanskrit.
iii. ( ) | Solve any 3 letters in Sanskrit
II. (Project work)
II. i. – ,,,,,
Write the Shabdaroopani of words,,,,,
ii. - ,
Write the ,& Dhaturoopani ( Verbs )of the following Roots. ) : : -)
) ) ) )
) : : -) ) ) ()
Subject: Hindi
–
10) 20
11)
– , , , , , , , , ,
–
12)
13) ( )
*
*
*
Subject: Science
1. Read Chapter- 15(Improvement in food resources) and write all In-text questions in your notebook.
2. Practice set of 7 numericals each, based on Ch- 3 ( mole concept), Ch- 10 (weight and density), Ch-
11 (Work and energy) and Ch- 12 (speed & frequency of sound) each.
3. Practice the important diagrams from Ch- 5,6 & 7 ( 2 times).
4. Read the text thoroughly and revise the syllabus for PT- 3.
Subject : IT
2. Practice Number system -Binary, Decimal, Hexa Decimal, Octal.
Class XI
Subject:- Accountancy
Q1. Show the grouping (Marshalling) of Assets and Liabilities in the Balance Sheet in order of
liquidity and in order of permanence.
Q2. Distinguish between Tangible and Intangible Assets on any three basis.
Q3. What is the importance and need for preparing Profit and loss A/c and Trading A/c
Q4. What is suspense a/c & when it is opened?
Q5.Differentiate between Capital expenditure and Revenue expenditure on any three basis.
Q6. Numerical question from Rectification of errors from the reference book Q No. 19 & 22 page No.
19.44 & 19.45of APC reference Book.
Q7. Numerical question from financial statements with adjustments from the reference book Q No. 22
& 23 page No 22.99 & 22.100 of APC Reference Book
Subject:- Business Studies
Q1. What do you mean by tiny Industry?
Q2. Expand the full form of MSMED Act.
Q2. Explain the various factors affecting the selection and raising the sources of business finance.
Q3. What are the various incentives provided by the Govt of India to support/encourage the industries
located in backward and hilly areas?
Q4. Explain American depository(ADR) and Global depository(GDR) as international sources of
finance.
Q5. What are the various problems that are generally faced by persons operating small scale
business/industries in India.
Q6. Explain the various types of Retailers:- a) Itinerants retailers c) Chain stores c) Departmental
Stores
1. All exercise question from chapter-13,14,15 and 16
2. Draw all the cycles from chapter photosynthesis.
3. Steps of glycolysis, Kreb's cycle, ETS, fermentation and amphibolic pathway from chapter
respiration in plants.
4. Role of phytohormones i.e. Auxin, G.A., cytokinin, ethylene and ABA.
5. Write the physiology of digestion of carbohydrate, protein and fats.
6. Complete all the diagram from the chapter digestion and absorption.
Subject: Computer Science
(a) __________key word is used to check conditions after grouping of records.
(b) ___________ clause is used to sort the records of a table?
(c) ______________command is used to modify the records of the table?
(d) ___________clause is used to remove the duplicating rows of the table?
(e) Differentiate between Primary key and Candidate key.
(f)____________________ of a table is called degree,and_______________ is called cardinality of a
table.
Give example of the following from the table given below:-
Table: CLASS
1 NANDA X 06-
06-
1995
Degree:-
Cardinality:-
Domain:-
g) create the above table with the following constraints:-
roll no as primary key,REG_NO as candidate key,with the default value of class as ‘x’,and a check
condition that marks should not be more than 600.
Solve the following:-
23. SELECT COUNT(*), CITY FROM CLASS GROUP BY CITY HAVING COUNT(*) < 2;
24. SELECT MAX(DOB),MIN(DOB) FROM CLASS;
25. SELECT DISTINCT CLASS FROM CLASS;
(h) Write SQL queries for (i) to (iv), which are based on the table: CLASS given in the question 4:
(4)
• To display the records in alphabetical order as per the name of the student.
• To display Class, Dob and City whose marks is between 450 and 551.
• To display Name, Class and total number of students who have secured more than 450
marks, class wise.
• To increase marks of all students by 20 whose class is “XII”.
v. Display the details of the student who has scored highest marks.
vi. display citywise number of students whose name starts with ‘A’.
TRAINER
COURSE
C206 O LEVEL 18000 2018-07-25 105
14) SELECT TID, TNAME FROM TRAINER WHERE CITY NOT
IN(‘DELHI’,’MUMBAI’);
15) SELECT DISTINCT TID FROM COURSE;
16) SELECT TID, COUNT(*), MIN(FEES) FROM COURSE GROUP BY TID HAVING
COUNT(*)>1;
h. Write SQL queries for (i) to (iv), which are based on the tables TRAINER & COURSE.
4
i. Display the Trainer Name, City & Salary in descending order of their Hiredate.
ii. To display the TNAME and CITY of TRAINER who joined the Institute in the month of
December 2001.
iii. To display TNAME, HIREDATE, CNAME, STARTDATE from tables TRAINER, and
COURSE of all those courses whose FEES is less than or equal to 10000.
17) TO display number of Trainers from each city.
EXPLAIN THE FOLLOWING TERMSWITH EXAMPLE:-
A.CARTESIAN PRODUCT
B.NATURAL JOIN
7. DIGITAL FOOTPRINT:-
2. Use statistical tools to complete the PROJECT .
3. PROJECT should be based on C.B.S.E guidelines .
4. Use 5 compulsory pages like :
a) Cover page
(a) CuO(s) + H2(g) Cu(s) + H2O(g)
(b) Fe2O3(s) + 3CO(g) 2Fe(s) + 3CO2(g)
(c) 4BCl3(g) + 3LiAlH4(s) 2B2H6(g) + 3LiCl(s) + 3 AlCl3 (s)
(d) 2K(s) + F2 (g) 2K + F – (s)
(e) 4 NH3(g) + 5 O2(g) 4NO(g) + 6H2O(g)
2. Calculate the oxidation number of sulphur, chromium and nitrogen in H2SO5, Cr2O7 2- and NO3 - . Suggest structure of these compounds. Count for the fallacy.
3. While sulphur dioxide and hydrogen peroxide can act as oxidising as well as reducing agents in their
reactions, ozone and nitric acid act only as oxidants. Why ?
4. How do you count for the following observations ?
(a) Though alkaline potassium permanganate and acidic potassium permanganate both are used as
oxidants, yet in the manufacture of benzoic acid from toluene we use alcoholic potassium
permanganate as an oxidant. Why ? Write a balanced redox equation for the reaction.
(b) When concentrated sulphuric acid is added to an inorganic mixture containing chloride, we get
colourless pungent smelling gas HCl, but if the mixture contains bromide then we get red vapour of
bromine. Why ?
5. Identify the substance oxidised reduced, oxidising agent and reducing agent for each of the following
reactions:
(a) 2AgBr (s) + C6H6O2(aq) 2Ag(s) + 2HBr (aq) + C6H4O2(aq)
(b) HCHO(l) + 2[Ag (NH3)2] + (aq) + 3OH - (aq) 2Ag(s) + HCOO – (aq) + 4NH3(aq) + 2H2O(l)
(c) HCHO (l) + 2 Cu 2+ (aq) + 5 OH - (aq) Cu2O(s) + HCOO- (aq) + 3H2O(l)
(d) N2H4(l) + 2H2O2(l) N2(g) + 4H2O(l)
(e) Pb(s) + PbO2(s) + 2H2SO4(aq) 2PbSO4(s) + 2H2O(l)
6. Balance the following redox reactions by ion – electron method :
(a) MnO4- (aq) + I- (aq) MnO2 (s) + I2 (s) (in basic medium)
(b) MnO4- (aq) + SO2 (g) Mn 2+ (aq) + HSO4-(aq) (in acidic solution)
(c) H2O2 (aq) + Fe 2+ (aq) Fe3+ (aq) + H2O (l) (in acidic solution)
(d) Cr2O7 2– + SO2(g) _ Cr 3+ (aq) + SO4 2– (aq) (in acidic solution)
7. Balance the following equations in basic medium by ion-electron method and oxidation number
methods and identify the oxidising agent and the reducing agent.
(a) P4(s) + OH – (aq) PH3(g) + HPO2 – (aq)
(b) N2H4(l) + ClO3 –(aq) NO(g) + Cl–(g)
(c) Cl2O7 (g) + H2O2(aq) ClO2 – (aq) + O2(g) + H +
8. Consider the elements :
(a) Identify the element that exhibits only negative oxidation state.
(b) Identify the element that exhibits only positive oxidation state.
(c) Identify the element that exhibits both positive and negative oxidation states.
(d) Identify the element which exhibits neither the negative nor does the positive oxidation state.
9. Given the standard electrode potentials,
K+ /K = –2.93V, Ag + /Ag = 0.80V,
Hg 2+ /Hg = 0.79V
arrange these metals in their increasing order of reducing power
HYDROGEN
18) Justify the position of hydrogen in the periodic table on the basis of its electronic
configuration.
19) Among NH3, H2O and HF, which would you expect to have highest magnitude of hydrogen
bonding and why?
20) Arrange the following
(i) CaH2, BeH2 and TiH2 in order of increasing electrical conductance.
(ii) LiH, NaH and CsH in order of increasing ionic character.
(iii) H–H, D–D and F–F in order of increasing bond dissociation enthalpy.
(iv) NaH, MgH2 and H2O in order of increasing reducing property.
21) What is meant by ‘demineralised’ water and how can it be obtained ?
22) What is the difference between the terms ‘hydrolysis’ and ‘hydration’ ?
23) How does H2O2 behave as a bleaching agent?
S - BLOCK
1. Find out the oxidation state of sodium in Na2O2.
2. Explain why can alkali and alkaline earth metals not be obtained by chemical
reduction methods?
3 . Beryllium and magnesium do not give colour to flame whereas other alkaline
earth metals do so. Why ?
4 . Potassium carbonate cannot be prepared by Solvay process. Why ?
5 . Draw the structure of (i) BeCl2 (vapour) (ii) BeCl2 (solid).
6 . Why is LiF almost insoluble in water whereas LiCl soluble not only in water but
also in acetone ?
(ii) sodium metal is heated in free supply of air ?
(iii) sodium peroxide dissolves in water ?
P – BLOCK
1 . How can you explain higher stability of BCl3 as compared to TlCl3 ?
2 . Is boric acid a protic acid ? Explain.
3 . Explain what happens when boric acid is heated .
4 . What happens when
(b) Boric acid is added to water,
(c) Aluminium is treated with dilute NaOH,
(d) BF3 is reacted with ammonia ?
5 . Write balanced equations for:
(i) BF3 + LiH
(ii) B2H6 + H2O
(iii) NaH + B2H6
Explain the following reactions
(a) Silicon is heated with methyl chloride at high temperature in the
presence of copper;
(c) CO is heated with ZnO;
(d) Hydrated alumina is treated with aqueous NaOH solution.
7 . What is the state of hybridisation of carbon in
(a) CO32– (b) diamond(c) graphite?
SUBJECT – PHYSICS
27. State universal law of gravitation.
28. Derive expressions for variation of ‘g’ with (i) height (ii) depth.
29. What is escape velocity? Derive expression for escape velocity from surface of earth.
30. Explain why moon does not have any atmosphere.
31. Differentiate between geostationary and polar satellites giving uses of them.
32. State Bernoulli’s theorem and derive Bernoulli’s equation.
33. What is venturimeter? Derive an expression to calculate speed of a flowing fluid.
34. State Pascal’s law and give its two applications.
35. What is Torricelli’s law?
36. State Newton’s law of cooling. Derive an expression to calculate time taken for cooling of a
body from temperature T2 to T1.
37. Draw stress – strain curve and indicate its points. What is the nature of material if in its curve
the ultimate tensile strength point and fracture point is (i) close (ii) far apart?
38. Draw stress - strain curve for aorta.
39. Show that: (i) av = 3al
(ii) aa = 2 al
1. Differentiate between political, economic and cultural rights. Give examples each kind of rights.
2.What is meant by social constraints? Are constraints of any kind necessary for enjoying freedom?
3 What is Harm Principal?
4. Why need local Self Government?
5.Why should we study Political Theory?
6. Describe Three Dimension of liberty.
Subject: Hindi
2019-20

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Subject- Geography
40. Prepare and learn following modules and submit it on the opening day after winter Break-
a) Atmospheric circulation and wind system
b) Water in the atmosphere.
c) Classification of world Climate.
d) Structure of the ocean floor.
E) Movement of oceanic water
D) Natural Vegetation of India and soil of India
41. Relearn the Identification of maps, locating and labeling of maps done in the class covered and
chapter completed during October to December 2019.
Subject: Math
42. Find the equation of the circle passing through two points on y –axis at distance 3 unit from the
origin & having radius 5 unit.
43. Find the equation of the circle passing through the vertices of a triangle whose sides are
represented by the equations x + y =2,3x – 4y=6 & x-y=0.
44. An equilateral triangle is inscribed in the parabola y2=4ax, where one vertex is at
The vertex of the parabola.Find the length of the sides of the triangle.
45. If the latus rectum of an ellipse substands a right angle at the center of the ellipse then find the
eccentricity of the ellipse.
46. Prove that the locus of the point of intersection of the lines √3x-y=4√3k &
√3kx + ky=4√3 for different value of k is a hyperbola whose eccentricity is 2.
47. If the co ordinates of the middle point of the portion of a line intercepted between the axes is
(3,2) then find the equation of the line.
48. If A(1,4) ,B(2,-3) & C(-1,-2) are the vertices of ABC, find the equation of
• The median through A.
• The altitude through A.
• The perpendicular bisector of BC.
49. Show that the perpendicular drawn from the point (4,1) on the line segment joining
(6,5) & (2,-1) divides it internaly in the ratio 8:5 .
50. Find the equation of the lines which cuts off intercepts on the axes whose sum & product are 1
& -6 respectively.
(i) →0
→0
+
(iv) →0
(+)(+)−

11.Find the derivetives of the following functions using 1st principal of differentiation:
(i) e√x (ii) cos(x2+1) (iii) sin(cosx)
12. Show that the following functions are not differentiable at x=0 :
(i) f(x)= IxI (ii) f(x)= sin (1/x) (iii) f(x)= [sin x]
13. If a, b,c,d are 4 distinct positive quantities in G.P then show that a+d > b+c
14. A person has 2 parents , 4 grand parants & so on . Find the numbers of his
Ancestors during the ten generations preceding his own.
15. If f is a function satisfying f(x+y)=f(x)+f(y) for all x,y inIN such that f(1)=3 &
∑ () = 120 =1 then find the value of n.
Subject: SOCIAL SCIENCE
?
55. Why Adivasis are becoming increasingly marginalized ?
56. How the condition of women improved during 19th century ?