SARPANG LOWER SECONDARY SCHOOL
ANNUAL EXAMINATION- 2013
Class: VII Science Full
Mark: 100 Time: 2½
hours
Name:
……………………………………………… Sec:………..Roll No:…………
Read
the following directions carefully
1.
Do not write for
the first fifteen minutes. This time
is to be spent reading questions. After having read the questions, you will be
given two and half hours to answer
all the questions.
2. In
this paper, there are sections: A and B.
You will find 5 questions in section A and 5 questions in section B.
You must answer all the questions.
3. Read
the directions to each questions carefully and write all your answers in the
space provided in the question booklet itself.
4. Do
not remove or tear any pages from the booklet.
5.
Remember to
write quickly but neatly.
Questions
|
Section
A (50 marks)
|
Section
B (50 marks)
|
Chief
markers Initial
|
||||||||||
Q.1
(30)
|
Q.2
(5)
|
Q.3
(5)
|
Q.4
(5)
|
Q.5
(5)
|
Q.6
(5)
|
Q.7
(10)
|
Q.8
(10)
|
Q.9
(10)
|
Q.10
(10)
|
Total
100
|
|||
Marks awarded
|
|||||||||||||
Marker’s initials
|
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SECTION-A
Answer
ALL Questions
(50x1=50)
DIRECTION:
Each question in this section is followed by four possible choices of answers.
Choose the most correct answer and write it down in the space provided
1.
In which of the following
substances, the particles are packed tightly?
a). Water. b). Stone c).Milk d).Air Ans: ……………………………………
2.
The change of state from solid to
liquid is called
a). Evaporation. b). Condensation c).Melting d).Freezing
Ans:
…………………..…………………
3. All of the following
are properties of a magnet except
a).A magnet can attract magnetic
materials. b).A magnet
has a directive property.
c).Like poles repel each other and
unlike poles attract. d).Poles of a
magnet do not exist in pairs.
Ans: ……………………………………………
(Study the figure and
answer the question number 4 and 5)
Object
|
10 N
|
20 N
|
4.
What is the
resultant force of the object?
a).5
N b).10N c).20 N d).30 N
Ans:
…………………………………….
5.
In which
direction will the object move?
a)
The object moves towards the 20 N
force.
b)
The object moves towards the 10 N
force.
c)
The object does not move.
d)
The object moves up and down.
Ans:
…………………………………………………………………………….
6.
What energy
conversion occurs in an archery player?
A.
Chemical
energy sound energy potential
energy kinetic energy Sound energy
B.
Chemical
energy potential energy kinetic energy sound energy.
C.
Chemical
energy kinetic energy potential energy kinetic energy sound energy.
D.
Potential
energy kinetic energy chemical energy kinetic energy sound energy.
Ans:
……………………………………………………………………………….
7.
Energy due to
position is called____________energy.
a).Kinetic
b). Chemical c).Electric d).Potential
Ans:
…………………………….
8.
Organism that
eats only plants are called__________
a).Omnivores. b).Herbivores. c).Carnivores. d).Producers.
Ans:
…………………………….
9.
______________is
the process of coating iron sheets with a very thin layer of zinc.
a).
Plating b).Galvanizing c). Alloying d).Painting
Ans:
…………………………………….
10. When magnesium burns in air, magnesium oxide
is formed. The most correct chemical equation for the reaction is
a).
Mg + O2 MgO2 b).
Mg
+ O2 Mg2O
c).
Mg + O2 Mg2O2 d). Mg
+ O2 MgO
Ans:
…………………………………………………………………………………….
11. Which of following cycle is a physical change?
a). Nitrogen
cycle. b). Carbon cycle. c). Water cycle. d).Life cycle
Ans:
………………………………………...
12. What is the symbol of sodium?
a).Na b).So c).S d).Sd
Ans: ………………………………………
13.
The ____________
has less humus but is rich in minerals and it is hard and compact.
a). Top soil c). Sub soil d).Bed rock e).Sandy soil
Ans: …………………………………..
14.
The presence of impurities in water
a).Raises the boiling point.
b).Lowers the boiling point.
c).Has no effect on the boiling point. d).Raises the
freezing point.
Ans: …………………………………..
15.
One advantage of soft water is that it
a).Helps to
produce sound teeth. b).Easily
produces lather with soap.
c).Produces scum with soap.
d).Good for making beer.
Ans: ……………………………………
16.
What does a green plant need during
photosynthesis?
a).Oxygen and
water. b).Oxygen
and carbon dioxide.
c). Carbon dioxide and glucose.
d).Carbon dioxide and water.
Ans: …………………………………..
17.
Since animals cannot prepare their own food,
they are called
a).Autotrophs. b).Photrophs. c).Chemotrophs. d).heterotrophs.
Ans:
…………………………………
18.
Organisms without back bones are called
a).
Invertebrates. B).Vertebrates. c).Arthropods. d).Flat worms. Ans:
………………………………
19.
The organisms which have chlorophyll are
a).Monera. b).Plants. d).Mollusks. e).Fungi. Ans:
………………………………
20.
Which of the following is not a physical
change?
a). Dissolving sugar in
water. b).Magnetizing a nail. C).burning sugar. D).Breaking glass. Ans: ………………………………
21.
Growing of leguminous plants with cereals is
called
a).Crop
rotation.
b).Mixed cropping.
c).Artificial cropping. D).Leguminous
cropping.
Ans: ………………………………….
22.
Yaks are not seen in Sarpang because
a).They are scared to live in border
area. b).There is insufficient food.
c).There is plenty of food in cold
places. d).They are
adapted to live only in cold places.
Ans:
…………………………………………………………………………………………
23.
The scientific name of national animal takin
is
a).Panthera
tigris. b).Sus sylvanicus. C).Budrocas taxicolor. d).Presbytis geei. Ans: …………………………………
24.
All are measures taken by our government to
reduce green house effect EXCEPT
A.
Celebrating social forestry day.
B.
People are encouraged to practice
shifting cultivation.
C.
Maintain 60% of forests cover for
all times to come.
D.
Banned on import of reconditioned
vehicles.
Ans: …………………………………………………………………………………….
25.
Organisms that depend on producers are called
A.
Quaternary consumer b).Tertiary
consumer
c).Secondary
consumer
d).Primary consumer
Ans:
……………………………………..
26.
What is the unit of work?
a).Ampere b).Volts c).Newton d).Joules Ans: ……………………………………
27.
The polarity of a magnet can be tested by
a).Attraction of
another magnet b).Repulsion
of another magnet
c).Touching a magnetic material d).Touching a non- magnetic material Ans: ……………………………………
28.
An object of
mass 20 kg is taken to the roof of a building 30 m high. What is the potential
energy of the object.[ if g = 10 m/s2]
a).10J
b).30 J
c).60 J d).6000J Ans:
…………………………………….
29.
Name the gas used in burning.
a).Nitrogen b).Carbondioxide c).Hydrogen d).Oxygen Ans:
…………………………………..
30.
What is the instrument used to measure
atmospheric pressure?
a).Hygrometer b).Voltmeter c).Barometer d).Newton meter Ans:
………………………………….
Question
2
Fill in the blanks [5
marks]
1.
A substance made
up of only one type of atoms is called_____________.
2.
The outermost protective
layer found in plant cell is_______________.
3.
The mixture of
two or more metals is called__________________.
4.
The force that
opposes motion is ____________force.
5.
Parasite which
live inside the body of a host are called------------------------
Question
3
State
whether the following statements are TRUE or FALSE [5 marks]
1.
Diffusion is the
movement of particles from the region of higher concentration to the region of
lower concentration.
( )
2.
The light rays
which falls on a surface is called reflected rays. ( )
3.
Evaporation is
the change of state from gas to liquid.
( )
4.
Instrument use
to measure the flow of current is called ammeter. ( )
5.
Denitrifying
bacteria removes nitrogen from the soil.
( )
Question
4
Match the following [5
marks]
Column
A
|
Column
B
|
1. Acids
2. Water
3. Neon
4. Soil
5. Sun
|
a. Mixture of rocks and humus.
b. Inert gas
c. Source of all energy
d. Turn blue litmus red
e. pH 7
|
Question
5
1.
Define the
following terms [1x3]
a. Matter
b. Weathering
c. Habitat.
2.
Write down the
chemical reaction for the following.
[1x2]
a. Burning
of sulphur in oxygen.
b. Burning
of carbon in insufficient supply of oxygen.
SECTION-B
Answer all Questions
(Long Answer Questions 5x 10= 50
Marks)
Question.6 [10]
a)
Write any two
disadvantages of friction. [2]
b) The
three states of matter are solid, liquid and gas. In which state are the
particles moving faster? Give reason to support your answer. (2)
c) a)
Balance the following chemical equations. (3)
i.
H2 + Cl2------------------
HCl
ii.
Cu + O2
--------------------------------> CuO
iii.
H2 + O2---------------------> H2O
d) What
is Brownian motion? (1)
e) Give
reason (2)
i.
Liquid pours out
of a tin easily when you make two holes instead of one.
ii.
A light bulb
containing a tungsten filament is NOT filled with air.
Question
7
i.
Draw a neat
diagram to show how water moves through a cycle. (3)
ii.
Why is carbon
extremely important to living organisms? (2)
iii.
Mention ANY TWO
activities which cause Global warming (2)
iv.
What are
fertilizers? Give TWO examples of nitrogenous fertilizers. (1+2)
Question
8
1.
State the uses of
the following gases. (3)
a.
Nitrogen
b.
Carbon dioxide
c.
Argon
2.
What are the TWO
conditions on which the solubility of the solute in water depends on? (2)
3.
What is an
eclipse? Explain the formation of solar eclipse with diagram. (3)
4.
What is
photosynthesis? Support your answer with equation. (2)
Question
9
a.
What is a food
chain? Write out a food chain having five organisms. (2)
b.
What are the
factors on which kinetic energy depends? Write the equation to show the
relation. (2)
c.
Pema drags a box
of weight 500N through a distance of 300m. Calculate the work done by Pema. (2)
d.
State the law of
conservation of energy. (1)
e.
What are the
uses of (3)
i.
Ammeter
ii.
Galvanometer
iii.
Voltmeter
Question
10
1.
Define catalyst.
Give one example. (1.5)
2.
Decide whether
each change given below is a physical or a chemical change. (1.5)
a)
Rusting of iron.
b)
Making a cheese
from milk
c)
Heating a piece
of iron to 1000o C and letting it cool again.
3.
Write down the
products of burning of firewood. (1)
4.
Differentiate
between inter-specific and intra- specific competition. (2)
Inter-Specific Competition
|
Intra-specific competition
|
5.
State TWO uses
of magnets. (2)
6.
State the energy
conversion in the following. (2)
a) An
electric fan
b) Sound
box
********HAPPY VACATION*********
Sarpang Lower
Secondary School
Class VII
Science,2013
Sl #
|
Topic/chapter
|
Rem
|
und
|
Application
|
Analysis
|
Evaluation
|
Creative
|
Total
|
1
|
Nature and its composition
|
A2.1,A5.1a
|
A3.1,A5.2a
|
A1, B6.c(3)
|
A2, B6b(2)
|
A5.2b,
B6d
|
13
|
|
2
|
Air
|
A29,A30
|
A4.3
|
B6Ei&ii(2)
|
B8i(3)
|
8
|
||
3
|
The earth
|
A2.3, A5.1b
|
A13, A4.4
|
4
|
||||
4
|
Water
|
A3.3
|
A15
|
B8.2(2)
|
4
|
|||
5
|
Sunlight
|
A3.2
|
A16,A4.5
|
B8.3(3)
|
B8.4(2)
|
8
|
||
6
|
Living things
|
A17, A5.1c
|
A18,A2.2
|
A19
|
5
|
|||
7
|
Physical & Chemical Change
|
A12
|
B10.3
|
B10.1(1.5)
|
A11, A20
|
A10
|
B10.2(1.5)
|
7
|
8
|
Water Cycle
|
A14
|
B7i(3)
|
4
|
||||
9
|
Carbon cycle
|
B7ii&iii(4)
|
A24
|
5
|
||||
10
|
Nitrogen Cycle
|
B7iv(3)
|
A3.5
|
4
|
||||
11
|
Environmental chemistry
|
A9, A23
|
A4.i&ii(2)
|
A21
|
A22
|
6
|
||
12
|
Ecosystem
|
A8
|
B10.4(2)
|
A2.5
|
B9a(2)
|
6
|
||
13
|
Energy in our life
|
A7, A25
|
B9b(2)
|
A6
|
B9d
|
B10.6(2),B9c(2)
|
10
|
|
14
|
Force in action
|
A26
|
A2.4
|
A4, A28, B6A(2).
|
A5
|
7
|
||
15
|
Electricity and Magnetism
|
A3.4
|
B9.e(3)
|
A27, B10.5(2)
|
A3
|
8
|
||
17
|
17
|
24.5
|
20
|
14
|
7.5
|
100
|
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