CHAPTER
6
H
tt
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pu T
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h
ow do we tell the difference between what is alive and what is not
alive? If we see a dog running, or a cow chewing cud, or a man
shouting loudly on the street, we know that these are living beings. What
if the
CHAPTER
14
Sources of
Energy
I
n Class IX, we learnt that the total energy during a physical or chemical
process is conserved. Why, then, do we hear so much about the energy
crisis? If energy can neither be created nor destroyed, we should have
no worries
Assignments in Mathematics Class X (Term II)
13. surface areas and volumes
Important Terms, Definitions and Results
Cuboid :
Hemisphere (solid) : r = radius
(a) Lateral surface area
= 2h(l + b)
(a) Curved surface area = 2pr2
(b) Surface
Assignments in Mathematics Class X (Term II)
4. QUADRATIC EQUATIONS
Important Terms, Definitions and Results
The roots of the quadratic equation ax2 + bx
+ c = 0, a, b, c R and a 0 are given by
An equation of the form ax2 + bx + c = 0, where a,
b, c
2
Acids, Bases
and Salts
Y
o N
be C
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re R
pu T
bl
is
h
ou have learnt in your previous classes that the sour and bitter
tastes of food are due to acids and bases, respectively, present in them.
If someone in the family is suffering from a problem of acid
Assignments in Mathematics Class X (Term II)
12. Areas related to circleS
ImPORTANT TERMS, DEFINITIONS AND RESULTS
Perimeter (circumference) of a circle with diameter
d (d = 2r, where r is the radius) is given by
C = pd = 2pr
The sum of the areas
Assignments in Mathematics Class X (Term II)
9. some applications of trigonometry
Important Terms, Definitions and Results
Line of sight : When an observer looks from a
point O at an object P, then the line OP is called
the line of sight.
Or the ang
CHAPTER
13
I
ed
Magnetic Effects of
Electric Current
o N
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pu T
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n the previous Chapter on Electricity we learnt about the heating
effects of electric current. What could be the other effects of electric
current? We know that an electric
Assignments in Mathematics Class X (Term II)
7. COORDINATE GEOMETRY
IMPORTANT TERMS, DEFINITIONS AND RESULTS
In the rectangular coordinate system, two number
lines are drawn at right angles to each other. The
point of intersection of these two number
CHAPTER
10
Light Reflection and
Refraction
W
More to Know!
e see a variety of objects in the world around us. However, we are
unable to see anything in a dark room. On lighting up the room,
things become visible. What makes things visible? During the day,
CHAPTER
12
Electricity
E
lectricity has an important place in modern society. It is a controllable
and convenient form of energy for a variety of uses in homes, schools,
hospitals, industries and so on. What constitutes electricity? How does
it flow in an
Assignments in Science Class X (Term I)
12
Electricity
IMPORTANT NOTES
1. There are two kinds of electric charges i.e.,
positive and negative. The opposite charges
attract each other and the similar charges repel
each other. Coulomb (C) is the standard un
Facts are not science as the dictionary is not literature.
Martin H. Fischer
CHAPTER
1
Chemical Reactions
and Equations
C
onsider the following situations of daily life and think what happens
when
milk is left at room temperature during summers.
an iron
Assignments in Mathematics Class X (Term II)
5. Arithmetic Progressions
IMPORTANT TERMS, DEFINITIONS AND RESULTS
Remember the following while working with
consecutive terms in an AP.
(i) Three consecutive terms in an AP.
a d, a, a + d
First t
CHAPTER
3
Metals and Non-metals
I
n Class IX you have learnt about various elements. You have seen
that elements can be classified as metals or non-metals on the basis of
their properties.
Think of some uses of metals and non-metals in your daily life.
CHAPTER
8
How do Organisms
Reproduce?
B
efore we discuss the mechanisms by which organisms reproduce,
let us ask a more basic question why do organisms reproduce?
After all, reproduction is not necessary to maintain the life of an individual
organism, unl
Assignments in Mathematics Class X (Term II)
15. probability
Important Terms, Definitions and Results
An event having only one outcome of the experiment
is called an elementary event.
The sum of the probabilities of all the elementary
events of an
Assignments in Mathematics Class X (Term II)
10. circles
Important Terms, Definitions, and Results
A line which has only one point common to the
circle is called a tangent to the circle.
A circle may be regarded as a collection of points
in a plan
11
The Human Eye and
the Colourful World
Y
o N
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ou have studied in the previous chapter about refraction of light by
lenses. You also studied the nature, position and relative size of
images formed by lenses. How can these ideas he
CHAPTER
5
Periodic Classification
of Elements
I
n Class IX we have learnt that matter around us is present in the form
of elements, compounds and mixtures and the elements contain atoms
of only one type. Do you know how many elements are known till date?
CHAPTER
16
Management of
Natural Resources
W
e learnt in Class IX, about some natural resources like soil, air
and water and how various components are cycled over and over
again in nature. In the previous chapter we also learnt about the pollution
of the
CBSE TEST PAPER-06
SCIENCE & TECHNOLOGY (Class-10)
Chapter 1. Chemical Reaction and Equations
1.
2.
3.
4.
5.
8.
Write a chemical equation for each of the following reactions
(2 marks)
(i) Zinc metal reacts with aqueous solution of hydrochloric acid to for
CHAPTER
7
Control and
Coordination
I
n the previous chapter, we looked at life processes involved in the
maintenance functions in living organisms. There, we had started with
a notion we all have, that if we see something moving, it is alive. Some of
thes
CHAPTER
15
Our Environment
W
e have heard the word environment often being used on the
television, in newspapers and by people around us. Our elders tell
us that the environment is not what it used to be earlier; others say that
we should work in a health
CLASS 10 CHEMISTRY TEST
.
Q1 (a) Which functional group present in acetic acid?
(b) Write its suffix (notation)
Q2.Which period is the shortest? Name the elements in this period
Q3.An element which is a soft and reactive metal
Q4.The metal which is an imp
CBSE TEST PAPER-03
CLASS - X (Chemical Reactions and equations)
1.
Take about 5 ml of dil. HCl in a test tube and add a few pieces of fine granules
(1)
to it. Which gas is evolved?
(a) Chlorine
(b) Hydrogen
(c) HCl
(d) Nitrogen
2.
Dissolving suger is an e
Physics Test -Classs10
[Light -Reflection and Refraction]
Date: 25-12-13
Max Marks:50
Part A
18
Q1.What type of lens must be placed at XY so that image I shifts to I
Q2.A ray AFB is incident on a spherical mirror whose centre of curvature is 2 F. Inwhich