Class IX TO X - DTEA

Class IX English
Reading:1. Read novel ‘Three men in a boat’(1- 10 Chapters)
2. Read Newspaper daily.
3. Read any five story.
Writing:1. Write the review of the story (2 pages)
2. Collect any 2 poems of Robert Frost and write it.
3. Write any 2 Articles from the newspaper.
4. Collect any two ‘Letter to Editor’ from the newspaper and write it.
Project:‘A Himalayan Tragedy’.(6 pages)
Poster Making:Any oneThought or proverb
Book Marker:Prepare Book Marker and write quotation on it.
SCIENCE
Chemistry
Q1.A diver is able to cut through water in a swimming pool. Which property of matter does this
observation
show?
Q2.What produces more severe burns, boiling water or steam?
Q3.Give reasons for the following observation:
The smell of hot sizzling food reaches you several meters away, but to get the smell from cold food
you have to go close.
Q4.
What is meant by latent heat of vaporization?
Q5.
Conversion of solid to vapour is called sublimation. Name the term used to denote the
conversion of vapour to solid.
Q6.
Conversion of solid state to liquid state is called fusion. What is meant by latent heat of
fusion?
Q.7.
Convert the following temperature to Celsius scale.
(a) 300 K
Q8.
(b) 573 K.
Convert the following temperatures to the Kelvin scale.
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(a) 250 C
Q9.
(b) 3700 C.
What is the Physical state of water at:
(a) 250C
(b) 00C?
Q10.
Bhawna was making tea in a kettle. Suddenly she felt intense heat from the puff of steam
gushing out of the spout of the kettle. She wondered whether the temperature of the
steam was higher than that of the water boiling in the kettle. Comment.
Q11.
Give reason for the following observations:
(a) Naphthalene balls disappear with time without leaving any solid.
(b) We can get the smell of perfume sitting several meters away.
Q12
(a)
Account for the following:
The temperature of ice remains constant during melting
(b)
Evaporation is a surface phenomenon
(c)
The space between the constituent particles is minimum in solids.
Physics
Q1.
Why we cannot have a speed-time graph perpendicular to X-axis (time axis)?
Q2.
What can you say about the motion of a body if its displacement-time graph is straight
line?
Q3.
Mrs. Anu leaves her house at 9.30 am for office and returns at about 5.30 pm. What is her
displacement in this time?
Q4.
A cheetah can run at a speed of 30 ms-1. If a lame wildbeast see the cheetah coming from
120 m away, how long does it have to live?
Q5
What is the acceleration of a car that maintains a constant velocity of 100 km/h for 10s?
Q6.
A car starts from rest and moves along the x-axis with constant acceleration 5 m s-2 for 8
second. If it then continues with constant velocity, what distance will the car cover in 12
seconds since it started from the rest?
Q7.
Draw a velocity versus time graph of a stone thrown vertically upwards and then coming
downwards after attaining the maximum height.
Q8.
Match in following?
1. Acceleration
(a) area under speed-time graph.
2. Distance covered
(b) negative acceleration.
3. Retardation
(c) straight line parallel to time axis in distance-time graph.
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4. Body at rest
(d) straight line in velocity-time graph, inclined with time
axis.
Q9.
Q10.
A motorcyclist drives from A to B with a uniform speed of 30 km per hour and returns back
with a speed of 20 km per hour Find its average speed.
The velocity time graph (Figure) shows the motion of a cyclist. Find (i) its acceleration (ii)
and the distance covered by the cyclist in 15 seconds.
Biology
1. Prepare working model of any of the following topic
1.Save environment 2.sewage treatment 3.Sustainable Agricultural management.
2.Make a chart (Neat &Labelled ) on the following topic of your interest.
.a) Plant cell & Animal cell
b) Global warming
c) clean environment
3. Read news paper everyday & collect latest information regarding Science & technology,
Represent these information in scrap book.
4. Write short notes on (with pictures) i) Mitochondria ii) Endoplasmic Reticulum iii) Nucleus
iv)Lysosomes v) Plastids.
MATHS
Assignment
1. find the five rational numbers between the following.
(i)
and
(ii)
and
(iii)
2. Represent the following on number line.
3
and
(i) √
√
(ii)
3. Write the following in the form of
(i) 0.7
.
(ii) 3.79
(iii) 0.378
(iv) 0.432
(v) 4. 732
4. Visualize the following on the number line.
(i) 4.732
(ii) 5.9999
decimal places)
(i) √
5. Simplify:
(iii) 3.47 (up to 4 decimal places)
√
(iv) 7.543 (up to 4
(ii) ( 2 + √ ) ( 7 + √
)
6. Rationalize the denominator of the following.
(i)
(ii)
√
7. Find:
√
√
(iii)
√
(iv)
√
(i)
(ii)
√
√
(iii)
8. find P(0) , P(1) and P (2) of the following.
(i) P(X) =
-2
+4x–5
(ii)
-
+ 15
9. Divide P(x) by g(x) .
(i) P(X)=
+2
(ii) P(X) =
-a
+ 3x + 3
+ 6x-a
g(x) = x+ 1
g(x) = x – a
10. Factorize the following.
(i) 9
+ 6x +1
(ii) 4
- 4y +1
(iii)
+ 13
+ 32 x + 20
(iv)
-1
Project work
11. Design a mathematical newspaper (size 10’’ x 14’’) which includes interesting, entertaining
knowledge oriented question, puzzle, riddles, crosswords, pictures and design etc. also give an
appropriate name for your news paper. (Minimum 7 pages)
12. Make a chart on the given topics
(i) Triangles
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(ii) Number system
(iii) Surface area and volume
(iv) Quadrilateral
13. Make a model on 3-D shapes (at least 5 shapes)
SOCIAL SCIENCE
Q1 Prepare a scrapbook. Cut five most important news clippings from any English newspaper
w.e.f
9 May 2015 to 31 May 2015 and paste them in the scrap book date wise.
Q2 Make a project on disaster management. Explain about any four disasters, their causes,
mitigation measures and the ways to cope with them in case of such disasters and the areas prone
to them. Paste suitable pictures wherever required.
Q3 Make an assignment of the following questions on A4 size sheet:a. The sun rises two hours earlier in Arunachal Pradesh than Gujarat but the watches show
the same time all over India. Why?
b. Name the states from which the Tropic of Cancer passes from India.
c. What is the latitudnal and longitudnal extent of India?
d. Why are wages for farm labourers in Palampur less than minimum wages set by the
government?
e. How do small farmers obtain capital for farming in Palampur. How it is different from large
farmers?
f. Name any four rights which are denied to people in a non-democratic country.
g. List any four points which prove that there is lack of democracy at global level.
h. How can you say that UN is a world government?
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3.
4.
1.
2.
3.
HOLIDAY ASSIGNMENT- Class X English
I. Try this crossword
ACROSS
DOWN
3 Not fully developed (8)
8 herb used in cookery (4)
9 list of ingredients (6)
10 female rabbit (3)
11 ball-point pen (4)
12 small restaurant (4)
14 _____ little pigs (KG rhyme) (5)
18 Move back in horror (6)
19 wooden hammer (6)
20 Body joint (5)
23 prop or support (4)
25 small bird (4)
26 not well (3)
27 Marlon _____ US actor (6)
28 woodwind instrument )4)
29 grotesque carved figure on roof gutter (8)
1 fast (5)
2 savage (9)
4 USA state (5)
5 sales representative (5)
6 below (5)
7 wind, rain etc. (8)
13 tunble (4)
15 centre of US film industry (9)
16 Robert ________, English poet (8)
17 leave out (4)
21 lazy person (5)
22 forbidden (5)
23 little (5)
24 South West English country (5)
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1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
17
18
19
20
21
22
15
23
24
25
26
27
28
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II. The unintentional misuse of words which seem to have similar pronunciation out of confusion,
is called malapropism. Choose the right synonym of the following similar sounding words.
1. Complement
a) Expression of praise
b) duplicate copy
c) completion of count
d) cargo
2. Compliment
a) Flattering comment
b) expression of praise
c) strong force
d) group
3. Resource
a) Request
b) reserve source of supply
c) demand
d) origin
4. Recourse
a) Repetition
b) race track c) readily available
d) application for help
5. Tortuous
a) Rough
b) full of turns
c) burning
d) cruel
6. Torturous
a) Winding
b) morally irregular
c) painful
d) hot
7. Disquisition
a) Cross examination
b) unrest
c) mental inclination d) formal discourse
8. Inquisition
a) Punishment
b) long speech
c) thorough investigation
d) curiosity
9. Disport
a) To be wasteful
b) to get rid of
c) to brag
d) to amuse
10. Deport
a) To leave
b) to imprison
c) to banish
d) departure
11. Colloquy
a) Conference
b) file of papers
c) argument
d) lecture
12. Obloquy
a) Dispute
b) humility
c) abusive language
d) courtesy
13. Temporize
a) To deliver an unprepared speech
b) to pursue a policy of delay c) to harden
d)
to be angry
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14.
a)
15.
a)
16.
a)
Extemporize
To make on the spur of moment
b) to honour c) to play
d) to talk endlessly
Hypercritical
Desperately ill
b) very witty c) insincere
d) excessively fault finding
Hypocritical
Fussy b) crucial
c) pertaining to one who professes to be what he is not
d)
unduly harsh in judgments
17. Prescribe
a) To forbid
b) to order
c) to limit
d) to explain
18. Proscribe
a) To protect
b) to announce
c) to command
d) to prohibit
19. Conscript
a) Compulsorily enrolled recruit
b) reproduction in writing
c) prisoner
d)
enclosed area
20. Transcript
a) Alteration
b) information or news
c) copy
d) going across
III. Learn two words each day (52 days; 104 words) and make your own handmade pocket
dictionary.
Iv. Read News paper daily and write about any 2 social issues and any 2 political issues.
V. Read 10 short stories or 1 novel of your choice and make reviews. (for each short story 50
words and for novel 300 words)
VI. Write articles on the following topics:
1. Benefits of outdoor games
2. Yoga, the internal cleanser
3. Child labour
4. Roll of discipline
5. Cyber bullying
6. Avalanche swept away many Everest climbers
VII. You are Suraj/ Sonakshi of sec. 12. R.K. Puram, New Delhi. You write a letter to the Editor of
The Hindustan Times, about the increased burglary and chain snatching incidents in your locality.
VIII. Write a letter to the Editor on frequent road accidents.
IX. Make a poster on the topics: ‘ Clean Delhi; Green Delhi’
‘ Girls are Pearls’
X. Read the prescribed novel “The Story of my Life” by Helen Keller.
Maths
1) Does the point (1, -2) lie on the line whose equation is 3x - y - 5 = 0?
2) For what values of 'k' the pair of linear equations x + ky + 4 = 0 and 2x - 4y - 8 = 0
is inconsistent?
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3) Determine the values of a and b so that 2x - (a - 4)y = 2b + 1 and 4x - (a - 1)y = 5b 1 have infinite number of solutions.
4) What is the solution of √ x - √ y = 0 and 2√ x - √ y = 0 ?
5) Find the co-ordinates of the points where the line 2x - 3y = 6 meets the x-axis
and y-axis?
6) Draw the graph of the following pair of linear equations x + 3y = 6 and 2x - 3y =
12.
Hence find the area of the region bounded by x = 0; y = 0 and 2x - 3y = 12.
7) Draw the graph of the following pair of equations 5x - y = 5 and 3x - y = 3.
Determine the co-ordinates of the vertices of triangle formed by these lines
and y-axis.
8) Graphically find whether the following pair of equations is consistent or
inconsistent? 5x - 8y + 1 = 0 and 3x - 24y + = 0.
9) Solve the following by substitution method:
i)
4y = x and 4x + 3y = 19.
ii)
x - 4y = 2 and x + 3y = 9
10) Solve the following pair of equations for 'x' and 'y'.
i)
ii)
+ 5y = 7 and
+ 5y = 5
= 1 and
=5
iii) 3x + 4y = 13 and 2x - 3y = 3
11) Solve using cross multiplication method
i)
5x + 4y - 4 = 0
and
ii) 37x + 43y = 117 and
x - 12y - 20 = 0
43x + 37y = 123
12) Solve the following
i) In a school some of the students opted for the NCC and some students opted for
gardening,
in such a way that three times the number of
students taking NCC are 60 less than the two
times the number of students, who
opted for gardening. One third the number of students opted for NCC is equal to the
one-fifth of the number of students who opted for gardening. Find the number of
students who opted for NCC and gardening respectively.
What is the importance of NCC in the life of a student?
ii) For Nepal earthquake victims two sections A and B of class X contributed Rs. 1500. If
the contribution of X-A was Rs. 100 less than that of X-B, find graphically the amounts
contributed by both the sections.
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iii) A man has certain notes of denomination Rs. 20 and Rs. 5 which amount to Rs. 380.
If the number of notes of each kind are interchanged, they amount to Rs. 60 less than
before. Find the number of notes of each denomination.
iv)On a highway two places A and B are 120 km are apart. A car from A and a second car
from B start at the same time. If the cars travels in the same direction at different
speeds, they meet in 6 hours, however if they travel towards each other, then they meet
in 1 hour.
What are their speeds?
v) A group of boys and girls are made to stand in rows. If 4 students are extra in a row,
there would be 2 rows less. If 4 students are less in a row there would be 4 more
rows. Find the
number of students in the class.
What is the motive behind making students stand in rows?
13) The following frequency distribution gives the marks(out of 50) of students in a
class test :
Marks
0 - 10
10 - 20
20 - 30
30 - 40
40 - 50
No. of
Students
10
24
38
22
6
Find the mean marks by using Step deviation method.
14) In an NFLAT exam, marks obtained by 120 students are given in the following
frequency
distribution. If it is given that the mean is 59,
find the missing frequencies X and Y.
Marks
0-10
1020
2030
3040
4050
5060
6070
7080
80-90
90100
No. of
Students
1
3
7
10
15
X
9
27
18
Y
15) On the Sports day of a school, 300 students participated. Their ages are given in the
following distribution :
Ages (in
years)
5-7
7-9
9 - 11
11 - 13
13 - 15
15 - 17
17 -19
No. of
students
67
33
41
95
36
13
15
Find the Mean and Mode of the data.
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Science
Physics and Chemistry
Q1.
List four observations that help us to identify whether a chemical reaction has taken place. Is
burning of candle, a
physical change or a chemical change?
Q2.
Write a balanced chemical equations for the following reactions.”
(i)
Silver bromide on exposure to sunlight decomposes into silver and bromine
(ii)
Lead nitrate and sodium chloride solutions are mixed ?
(iii)
Sodium metal reacts with water to form sodium hydroxide and hydrogen gas.
(iv)
Copper (ii) oxide reacts with dilute hydrochloric acid.
(v)
BaCl2 (aq) + Al2 (SO4)3 (aq) Ald3 (aq) + Ba So4 (s)
Q3.
Rahul prepared lime water freshly by mixing quicklime and water in an open beaker. He
touched the beaker and
noted down his observations what is the name of reaction between
quicklime and water? It is exothermic or
endothermic? If the beaker is kept open what will
happen? Write two chemical equations involved.
4)
What is Rancidity? What are the preventive measures taken to prevent Rancidity? Expand
BHA. What is the role of
B.H.A?
5)
What is the Commercial use of salts like silver chloride and silver bromide?
6)
What are the bad, ill effects of oil paints containing Lead? Should we ban paints containing
lead?
7)
Find out from your plumber why do we prefer plastic PVC pipes in these days for water
supply instead of iron pipes?
8)
Why do we fill electrical bulbs with argon?
9)
What is bio-fuel? Name the Bacteria which we find in our guts which turns biomass into biofuel
10)
Discuss bio-gas plant with respect to (a) raw materials required (b) role of anaerobes c)
composition of bio-gas (d)
advantages over other fuels (e) uses.
11)
How does the resistance of a wire vary with its area of cross section?
12.)
Why are the conductors of electric heating devices such as bread toasters and electric iron
made of an alloy rather than
a pure metal?
13.)
Calculate the number of electrons constituting one coulomb of charge. Given charge of an
electron = 1.6x10 -19
coulombs
14)
An NGO is opposing the construction of a dam on a river flowing through a number of
villages and forest for the
purpose of generating electricity while the government was
insisting that it would bring a number of benefits for the
villagers once the project gets
completed?
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(a) Describe the value exhibited by NGO (b)Explain any 4 concerns of NGO due to
which it is opposing
construction of dam.
Biology
Prepare working model of any of the following topic
a) Human Digestive system
b) Human Respiratory system
c) Human Circulatory
Make a chart (Neat & labeled ) on the following topic of your interest
a)Save Environment
b) Health & Nutrition
Write down question & Answer for chapter 6 Life process & draw all the important diagram
marked in NCERT book.
Social Science
General Instructions
-
1
Information should be hand written.
Use handmade file.
Marks will be given on the basis of presentation, organization, relevance of content, map
where required.
Disaster management Project
Draw designs of houses resistant to four main hazards like flood, Earthquake, Cyclone,
Landslide etc.
Make a glossary of architectural terms and explain their meaning.
2.
Geography
Prepare an attractive project file on the Wild life sanctuaries and National parks of India
- Choose any four
- Collect complete information about the sanctuaries/ national Parks.
- Paste pictures relevant to particular National parks/ Sanctuaries.
- Cite their location on map.
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3.
History
Select any one industry in your region and find out its history. How has the technology
changed? Where do the workers come from? How are the products advertised and marketed?
Try and talk to the employers and some workers to get their views about the industry’s history.
4.
Economics
Country
Monthly incomes of citizens ( in rupees)
I
II
III
IV
V
Country A
9500 10500
9800
10000
10200
Country B
500
500
500
48000
-
500
Average
Based on the data given in the table calculate the average income for both the
countries.
Are there any limitations of using Average income to assess the development of a
nation? If any explain them.
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