DELHI PUBLIC SCHOOL
SAIL Township, Ranchi
Summer Holiday Assignment (2016-17)
Class:-IX
Subject:- Social Science
HIS./CIV./ECO
1.
Answer the following questions:(a) Why is the French Revolution considered as the starting point of Modern History?
(b) Identify any four similarities that exist between the provisions contained in the declaration of
the Right of the Man and the citizens and the Indian Constitution.
(c ) What conditions provide strength to democratic rule? Why the system has failed to take roots in
some countries.
2.
Project Work:
Use A4 size paper
Prepare a project file on the Topic“ Prospects for Global Democracy ; Role of world organizations.”
Project file should contain:(a) Cover Page
(b) Acknowledgement
(c ) Index
(d) Introduction
(e) Content
(f) Conclusion
(g) Sources
GEOGRAPHY
ASSIGNMENT-I
Answer the following questions in A-4 size paper.
1.
2.
3.
4.
5.
1.
2.
3.
4.
Write the Latitudinal and Longitudinal Extent of India.
Why 82° 30ˈE longitude has been selected as the Standard Meridian of India?
Write any two contributions of Trans Indian Ocean Routes.
Why is the difference between the durations of day and night hardly felt at kannyakumari but not so
in Kashmir?
Name the numbers of Union Territories along the western and eastern coast.
ASSIGNMENT-II
Project Work: Use A-4 size paper.
Prepare a project on any one of the following Natural Disasters.
Cyclone.
Earthquake.
Land Slide.
Drought.
DELHI PUBLIC SCHOOL
SAIL Township, Ranchi
Summer Holiday Assignment (2016-17)
Class:-IX
1.
Subject:- English
Write a book review of the book “Three Men in a Boat”. You may include the following points:(i) Start with a couple of sentences describing what the book is about.
(ii) Discuss what you particularly liked about the book.
(iii) Mention anything you disliked about the book.
(iv) Round up your review or summarise.
(v) You can give the book a rating. (Out of 5 stars)
2.
3.
Write the character sketch of grand-mother. (Chapter- How I taught my grand mother to read……)
(a)
Analyse the character.
(b)
The positive points about the character.
(c)
Emotional aspects of the character.
(d)
As a student.
( Word Limit – 120)
Paste any two social advertisements (Like „Sarva Siksha Abhiyan.) published in any English
Newspapers and described how it can benefit the society.
Put in a stick file.
(Word Limit-150)
DELHI PUBLIC SCHOOL
SAIL Township, Ranchi
Summer Holiday Assignment (2016-17)
Class:-IX
Subject:- Mathematics
1. Find the value of (81)0.16 x (81)0.09
2. Find the product of
x
x
3. If
, then show that q (x2+1) = px
4. Rationalize the denominator of
1
6+ 5- 11
4
3
5. Without actual division, prove that 2x -6x +3x2+3x-2 is exactly divisible by (x2-3x+2)
6. Factorize:
(a) a+b2-b-a2
(b) 7 (x-2y)2 – 25 (x-2y) +12
(c) a3- 1/a3 – 2a + 2/a
(d) (p-q)3 + (q-r)3 + (r-p)3
7. Prove that every line segment has a unique midpoint.
8. Find the value of a and b where
7-1
-
7+1
7+1
=
a+b 7
7-1
9. Simplify:10. Simplify:- (x+y)3 - (x-y)3 – 6y (x2 –y2)
11. Prove that
(a+b)3 + (b+c3) + (c+a)3 – 3 (a+b) (b+c) (c+a) = 2 ( a3 + b3+c3- 3 abc)
12. Resolve a3 – b3 +1+3ab into factors.
13. Simplify:
(a2 - b2)3 + (b2 - a2)3 + (c2 – a2)3
(a-b)3 + (b - a)3 + (c – a)3
14. Find the value of
(x-a)3 + (x-b)3 + (x-c)3 – 3 (x-a) (x-b) (x-c) when a+b+c= 3x
15. If p= 2-a, prove that a3 + 6ap + p3 – 8 =0
16. Factorize: p3 (q-r)3 + q3 (r-p)3 + r3 (p-q)3
17 Prove that :
a3 + b3+c3 – 3abc =(a+b+c) (a2 + b2+c2 –ab-bc-ca)
18. Factorize:
x2+x – (a+1) (a+2)
19. If a+b+c= 0, then prove that
20. Find the value of a3 + b3+c3 – 3abc
If a+b+c = 14 and a2 + b2+c2 = 60
21. Prepare a project on Euclid‟s Geometry
[ Format of the project: Life history of Great Greek Mathematician Euclid, Contribution
on geometry, why he is called the father of geometry, about postulates and axioms, 2-3
theorems related to chapter. ]
Note:- Use A-4 size papers and put in a stick file.
DELHI PUBLIC SCHOOL
SAIL Township, Ranchi
Summer Holiday Assignment (2016-17)
Class:-IX
Subject:- General Science
PHYSICS
1. Distinguish between speed and velocity.
2. A bus starts from rest and attains a speed of 36 km-1 in 10 minute while moving
with a uniform acceleration. Calculate the acceleration of the bus.
3. Using velocity –time graph, derive
(a)
V= u + at
(b)
S=
(c )
S= ut +½at²
(d)
V² - u²=2as
4. Project:- Consult a railway time table. Prepare a list of different trains running on the
Golden Quadrilateral of India Railway (New Delhi – Howrah, Howrah-Chennai,
Chennai-Mumbai and Mumbai –New Delhi routes). Calculate the average speeds of
various trains running on these routes and arrange the trains in the descending order of
their average speeds.
CHEMISTRY
I.
II.
Make a project on difference types of colloids and paste suitable pictures.
Introductions, Aerosol, emulsion, foam, gel and Sol .Bibliography (Maximum upto 5 pages
everything included)
Write down the answers of the following questions on a A-4 size sheet ( with the name, class and
section , roll no. written on the top right hand cover of the sheet)
1. Write down the definition of the following giving examples
(a) Element (b) Compound (c) Mixture (d) Acid radical and (e) Basic Radical
2. Write down the formulae/Symbol and valency of the following radicals.
(a) Chloride (b) Nitrate
(c) Carbonate (d) Sulphate
(e) Acetate
(f) Permanganate (g) bicarbonate (h) Cupric (i) Ferrous
(j) Peroxide.
3. Why is water used as a cooling agent?
4. Why do air coolers not function well when the humidity increases?
5. Why is steam more injurious than boiling water?
6. Write 2 differences between evaporation and boiling.
BIOLOGY
I.
Answer the following questions on A-4 size paper (with name, class/sec.,roll no. written on the top )
1.
2.
3.
4.
5.
6.
7.
8.
9.
II.
Name a high yielding variety of rice.
How was Sharbati Sonara developed?
What are the advantages of organic farming?
What are the GM crops? Name any one such crop which is grown in India?
If there is low rainfall in a village throughout the year, what measures will you
suggest to the farmers for better cropping?
What is the role of culling in poultry farming?
Why bee-keeping should be done in good pasturage?
What do you mean by bio-pesticides? Name any two bio-pesticides.
Why is excess use of fertilizers detrimental for environment?
Project work:Prepare a project file on any topic of „Animal Husbandary‟. Project file should
contain:(a) Cover Page
(b) Acknowledgement
(c) Index
(d) Introduction
(e) Content
(f) Conclusion
(g) Sources