Download Important Instructions for the School Principal

Important Instructions for the
School Principal
(Not to be printed with the question paper)
1) This question paper is strictly meant for use in school based SA-I, September-2012 only.
This question paper is not to be used for any other purpose except mentioned above under
any circumstances.
2) The intellectual material contained in the question paper is the exclusive property of
Central Board of Secondary Education and no one including the user school is allowed to
publish, print or convey (by any means) to any person not authorised by the board in this
regard.
3) The School Principal is responsible for the safe custody of the question paper or any other
material sent by the Central Board of Secondary Education in connection with school
based SA-I, September-2012, in any form including the print-outs, compact-disc or any
other electronic form.
4) Any violation of the terms and conditions mentioned above may result in the action
criminal or civil under the applicable laws/byelaws against the offenders/defaulters.
Note:
Please ensure that these instructions are not printed with the question
paper being administered to the examinees.
Page 1 of 15
I, 2012
SUMMATIVE ASSESSMENT – I, 2012
SC1-061
/ SCIENCE
IX / Class – IX
3
90
Time allowed : 3 hours
Maximum Marks : 90
(i)
(ii)
(iii)
(iv)
(v)
1
3
(vi)
4
7
(vii)
8
19
(viii)
20
24
(ix)
25
42
30
50
70
General Instructions :
(i)
(ii)
(iii)
(iv)
(v)
(vi)
(vii)
(viii)
(ix)
The question paper comprises of two Sections, A and B. You are to attempt both the
sections.
All questions are compulsory.
There is no overall choice. However, internal choice has been provided in all the five
questions of five marks category. Only one option in such questions is to be attempted.
All questions of Section-A and all questions of Section-B are to be attempted separately.
Question numbers 1 to 3 in Section-A are one mark questions. These are to be answered in
one word or in one sentence.
Question numbers 4 to 7 in Sections-A are two marks questions. These are to be answered
in about 30 words each.
Question numbers 8 to 19 in Section-A are three marks questions. These are to be answered
in about 50 words each.
Question numbers 20 to 24 in Section-A are five marks questions. These are to be answered
in about 70 words each.
Question numbers 25 to 42 in Section-B are multiple choice questions based on practical
skills. Each question is a one mark question. You are to select one most appropriate
response out of the four provided to you.
Page 2 of 15
SECTION-A
1.
A, B,
EA>EB>EC
C
EA, EB,
TA, TB
1
EC
TC
Kinetic energy of particles of water in three vessels A, B, C are EA, EB, and EC
respectively and EA > EB > EC. Arrange the temperatures TA, TB and TC of water
in the three vessels in increasing order.
2.
1
Identify the single celled organisms from the following :
Cockroach, chlamydomonas, snake, mosquito, bacteria
3.
1
Rakesh tries to push a box on a rough floor but is unable to move it. Name the
force which balances the force applied by him.
4.
273 K
2
373 K
Convert 273 K and 373 K into temperatures in celsium scale. What is the
physical state of water at these temperatures.
5.
A
2
B
Beakers A and B contain a solution of potassium permanganate and a mixture of
chalk powder in water. Mention one point of difference that you would observe
in the two mixtures. On the basis of the observation categorise the two as
homogeneous or heterogeneous mixture
6.
2
Mention four characteristic features of the cells of meristematic tissue.
7.
2
All the planets are moving in circular orbits. What provides the necessary force
for this motion and what is the direction of this force ? Write the name of this
force what will happen if this force disappears suddenly ?
8.
3
Differentiate between Kharif and Rabi crops. Mention the months in which
these are sown. Give one example of each.
Page 3 of 15
9.
3
A farmer is advised to use manure instead of fertilizer in his fields. List any two
advantages that the farmer will get if he accepts this advise. How is use of
manure particularly useful for clayey and sandy soil ?
10.
3
(i)
(ii)
(iv)
(v)
(iii)
Illustrate the following with the help of a flow-chart for inter conversion of the
three states of matter :
(i)
Sublimation
(ii)
Vaporisation (iii)
Condensation
(iv)
Fusion
(v)
Solidification
11.
(a)
225 g
3
25 g
(b)
(a)
(b)
12.
A solution contains 25 g of sugar in 225 g of water. Calculate the
concentration in terms of mass by mass percentage of solution.
You are given a saturated sugar solution in water. Mention two ways by
which you can make it unsaturated ?
3
(a)
(b)
(a)
(b)
13.
Why is plasma membrane called selectively permeable membrane ?
How is flexible nature of plasma membrane useful for Amoeba ? Name
this process.
3
(a)
(b)
(a)
(b)
You can very easily bend the stem of a plant without breaking it. Name
the tissue in the plant which makes it possible. Where is it located ?
State any two characteristic features of the cells of this tissue.
Draw a labelled diagram of the transverse section of this tissue.
14.
3
Given below are the names of some connective tissues.
composition and function of each of them :
Bone, cartilage, blood.
Mention the
Page 4 of 15
15.
3
(a)
A
B
B
C
(b)
(c)
The velocity-time graph of an object is shown in the following figure :
(a)
(b)
(c)
16.
State the kind of motion that object has, from A to B and from B to C.
Identify the part of graph where the object has zero acceleration. Give
reason for your answer.
Identify the part of graph where the object has negative acceleration.
Give reason for your answer.
3
(a)
(i)
(ii)
(b)
(i)
(ii)
(a)
(b)
State the name of the object which has more inertia :
(i)
a rubber ball and a stone of the same size
(ii)
an empty box and another similar box filled with clothes
Give reasons for the following :
(i)
Luggage placed on the roof of a car or bus is tied with rope.
(ii)
When a branch of a tree is shaken vigorously, some of the leaves
drop down.
Page 5 of 15
17.
(a)
3
S.I.
kg-ms-2, ms-1, kg ms-1, ms-2.
(b)
2 kg
10s
5ms-1
10ms-1
15s,
(a)
(b)
18.
(a)
Given below are S.I. units of some physical quantities :
kg-ms-2, ms-1, kg ms-1, ms-2.
Which one of the above can be used for measuring momentum of an
object ? Write the physical quantity that needs to be varied if the
momentum of a body of given mass has to be changed.
A constant force acts on an object of mass 2 kg for 10s and increases its
velocity from 5ms-1 to 10ms-1. Find the magnitude of applied force. If
this force was applied for a duration of 15s, what would be the velocity
of the object ?
A
B
50 kg
60 kg
3
1m
G6.6731011 Nm2 kg-2
(b)
(a)
(b)
19.
(a)
Masses of two students A and B sitting at a distance of 1m from each
other in a class are 50 kg and 60 kg respectively. Calculate the force of
attraction between the two. Given that G6.6731011 Nm2 kg-2.
Mention any two phenomena which are successfully explained by
universal law of gravitation.
3
196 N
1
6
g9.8ms-2
(b)
(a)
(b)
20.
Weight of an object on earth is 196 N. What will be its weight on the
surface of the moon, if acceleration due to gravity on the surface of the
moon is one sixth of that on the earth ? What will be its mass on the
surface of the earth and on the surface of the moon ? (Given that
g9.8ms-2)
Mention any one point of difference between mass and weight.
5
(a)
(b)
(a)
Explain four different kinds of irrigation systems adopted in India to
Page 6 of 15
(b)
supply water for agriculture.
What is rain water harvesting and watershed management ? How is it
useful for enhancing availability of water for agriculture ?
OR
(a)
(b)
(c)
(a)
(b)
(c)
21.
Differentiate between mixed cropping and inter-cropping. Give one
example of each.
How is crop-rotation different from the above two ?
Mention the factors that are taken into consideration for deciding choice
of crops for inter-cropping and cooprotation. Also mention one
advantage of each of these cropping patterns.
5
(a)
(i)
(ii)
(iii)
(iv)
(b)
(i)
(ii)
(a)
(b)
(iii)
Mention how the evaporation of a liquid is affected with :
(i)
decrease of surface area exposed to the atmosphere
(ii)
decrease of temperature
(iii)
increase of humidity
(iv)
decrease in wind speed
Give reason for the following :
(i)
Water kept in an earthen pot becomes cool during summer
(ii)
Wearing cotton clothes during summer is very comfortable
(iii)
During rainy season clothes take more time to dry up
OR
(a)
(b)
(c)
(a)
(b)
(c)
22.
State the factors that determine the state of a substance. Also mention
how these factors are changed to liquify gases.
What is dry ice ? Why is it called so ? Mention the specific condition
that needs to be maintained for its storage.
Out of dry in and wet air which is heavier ?
5
Page 7 of 15
Mention in sequential order the steps involved in separating the components of
air by fractional distillation. Name two main components of air and also give
their percentage in air. Which gas is liquified first as the air is cooled and why ?
OR
(a)
(b)
(a)
(b)
On the basis of composition, filterability and size of particles distinguish
in tabular form between a solution and a colloid.
What is Tyndale effect ? Mention two possible situations when you may
observe this effect.
23.
A
5
B
(ms-1)
(S)
0
5
10
15
20
A
B
0
6
12
18
24
0
4
9
15
22
(i)
(ii)
A
B
10s
The table given below shows the velocity of two cars A and B at different
intervals of time :
Time
Velocity in ms-1
(S)
Car A
Car B
0
0
0
5
6
4
10
12
9
15
18
15
20
24
22
(i)
Identify the car which is moving with uniform acceleration. Give
reason for your answer.
(ii)
From the table given above calculate the distance covered by car A
and B in 10s.
OR
(a)
‘u’
‘a’
‘V’
V, u, a
t
s
Page 8 of 15
(b)
20
90 kmh-1
(i)
(a)
(ii)
Given below is the velocity-time graph of a car which starts with initial
velocity ‘u’ and uniform acceleration ‘a’. It covers a distance ‘s’ before
finally attaining a velocity ‘V’. In time t establish a relationship between,
U,V, a and s with the help of graph.
(b)
A train starting from rest
attains a velocity of 90 kmh-1 in 20 minutes. If it is assumed that
acceleration is uniform, find :
(i)
its acceleration
(ii)
distance travelled by the train for attaining this velocity
24.
(a)
m1
m2
u1
u2
V1
(b)
500g
50
5
V2
ms-1
0.01/s
(a)
(b)
State law of conservation of momentum. Express it mathematically,
when two bodies of masses m1 and m2 moving in same direction along
same straight line with velocity u1 and u2 respectively collide and their
respective velocity after collision become V1 and V2.
A hammer of mass 500g moving at 50 ms-1 strikes a nail. The nail stops
the hammer in a small time interval of 0.01/s. What is the change in
momentum suffered by the hammer ? Also calculate the force of the
hammer on the nail. What will be the force of the nail on the hammer ?
Give reason for your answer.
Page 9 of 15
OR
(a)
(b)
(i)
(ii)
(a)
(b)
State Newton’s second law of motion and derive its mathematical
formulation.
Give reason for the following :
(i)
As compared to mud floor we hurt more if we fall on a cemented
floor. Why ?
(ii)
It is difficult to hold a hose which ejects large amounts of water at
a high velocity.
/ SECTION – B
25.
A, B, C
1
D
(A)
(B)
(C)
(D)
(a)
A, C
(b)
B, D
(c)
D, A
(d)
B, C
Four students, A, B, C and D performed iodine test for the presence of starch in
the given food sample. The samples given to each of them were as follows :
(A)
Paste of rice powder
(B)
Paste of green peas
(C)
paste of tomatoes
(D)
Paste of boiled potato
The students who are likely to get positive result are :
(a)
A, C
(b)
B, D
(c)
D, A
(d)
B, C
26.
A, B,
1
C
(A)
(B)
(C)
(a)
A
(b)
(c)
C
(d)
B
To test the presence of metanil yellow in a given adulterated sample of dal three
students A, B, C took the sample in three test tubes in the following manner :
(A)
whole dal
(B)
powder of dry dal
(C)
solution of powdered dal in water
Each of them added cone Hydrochloric acid to their respective samples. Correct
confirmatory observation shall be obtained by :
Page 10 of 15
(a)
(c)
A only
C only
(b)
B only
(d)
all the three
A, B, C
D
27.
1
(a)
A
(b)
B
(c)
C
(d)
D
Study the experimental set up done by four students A, B, C, D for determining
melting point of ice :
The student who has made correct set up is :
(a)
A
(b)
B
(c)
C
(d)
D
28.
1
(a)
(b)
(c)
(d)
90C
(a)
A
(b)
B
(c)
C
(d)
D
In an experiment to determine the boiling point of water, four students noted
their observations as :
(a)
Temperature of water gradually increases and then remains constant
even when water strats boiling.
(b)
Temperature of water suddenly rises high and then becomes constant
(c)
Temperature of water goes on rising continuously even when water
starts boiling
(d)
Temperature of water rises upto 90C and then it becomes constant but
again starts rising when water starts boiling
The student who made correct observation is :
(a)
A
(b)
B
(c)
C
(d)
D
29.
1
(a)
Page 11 of 15
(b)
(c)
(d)
Minimum apparatus required for separating ammonium chloride from a
mixture of ammonium chloride, sand and salt would be :
(a)
beaker, china dish, funnel
(b)
watch glass, funnel, cotton plug
(c)
china dish, funnel, cotton plug
(d)
funnel, filter paper, beaker
30.
1
(a)
(b)
B
B
C
(c)
C
(d)
A
C
Rima took fine chalk powder egg albumin and alum powder in three tubes A, B
and C respectively. After adding water to all the three test tubes she would
observe that the solution is :
(a)
transparent in B only
(b)
transparent in B and C only
(c)
transparent in C only
(d)
transparent in A and C only
31.
A
(a)
A
(b)
B
(c)
A
1
B
B
A
B
(d)
China dish A contains mixture of iron filings and sulphur powder. In china
dish B same portion of the mixture is heated till the two component combine
together to form a compound. Umesh added carbon disulphide to both the
China dishes. He would observe that :
(a)
In dish A sulphur dissolves but in B contents remain unaffected.
(b)
In dish B sulphur component of the compound dissolves but in A
contents remain unaffected.
(c)
Sulphur dissolves in both the dishes A and B.
(d)
Sulphur does not dissolve in either of the dish.
32.
1
(a)
(b)
(c)
(d)
Page 12 of 15
When a piece of magnesium ribbon is brought near the flame of Bunsen burner,
it is observed that :
(a)
Tip of the magnesium ribbon becomes red hot but it does not burn with a
flame.
(b)
The magnesium ribbon burns with a dazzling white flame.
(c)
The magnesium ribbon melts.
(d)
Lot of smoke is produced.
33.
1
(a)
(b)
(c)
(d)
A mixture of iron filings and sulphur powder is heated in a china dish. It would
be observed that :
(a)
a black paste of iron sulphide will be formed.
(b)
sulphur melts and iron filings float on the surface.
(c)
sulphur catches fire and iron filings remain unaffected.
(d)
iron filings become red hot but sulphur remains as it is.
34.
1
(a)
(b)
(c)
(d)
Aqueous solutions of sodium sulphate and barium chloride are mixed together
in a beaker. It would be observed that :
(a)
a clear solution is formed.
(b)
a white precipitate settled at the bottom.
(c)
the whole mixture becomes turbid.
(d)
the solutions do not mix up and a layer separates the two.
35.
1
(a)
(b)
(c)
(d)
While preparing temporary mount of onion peel students were advised to put
cover slip very gently on the mounted material on the slide. This is done to :
(a)
avoid the crushing of mounted material
(b)
avoid the entry of air bubbles
(c)
avoid oozing of stain
(d)
avoid oozing of glycerine
Page 13 of 15
36.
1
(a)
(b)
(c)
(d)
Rita prepared a temporary mount of human check cells and observed the slide
under a micro scope. Her observation about the absence of an organelle in
human cheek cells is :
(a)
There is no nucleus
(b)
There is no cytoplasm
(c)
There is no chloroplast
(d)
There is no cell membrane
37.
1
(a)
(b)
(c)
(d)
After observing a temporary mount of an onion peel under microscope, some of
the observations made about cell wall are :
(a)
it is dynamic and living
(b)
it is rigid and non-living
(c)
it is dynamic and non-living (d)
it is rigid and living
38.
1
(a)
(b)
(c)
(d)
Vishnu identified a slide as that of a striated muscle fibre. He did so on the
basis of :
(a)
Cells are long, cylindrical, unbranched and uninucleate.
(b)
Cells are long, cylindrical, branched and uninucleate.
(c)
Cells are long, cylindrical, unbranched and multinucleate.
(d)
Cells are long, with pointed ends and uninucleate
39.
1
(a)
(b)
(c)
(d)
Dendrites and found in :
(a)
Striated muscle
(c)
parenchyma
(b)
(d)
40.
6g
(a)
6
9
nerve cell
sclerenchyma
10
100
(b)
9g
6
9
6
1
100
Page 14 of 15
6
9
(d)
100
100
6
6
Prakash soaked 6g raisins in water and after 10 hrs. found that their mass has
become 9g. To determine the percentage of water absorbed by raisins.
Calculation will be done as :
6
6
(a)
(b)
100
100
9
9 6
9 6
9
(c)
(d)
100
100
6
6
(c)
9
41.
1
0.5 gwt
69
(a)
3.45 gwt
(b)
34.5 gwt
(c)
69 gwt
(d)
13.8 gwt
The least count of the spring balance used for measuring minimum force
required to move a wooden block on the table is 0.5 gwt. When the pointer is at
69th mark, the block starts moving. The force at this point is :
(a)
3.45 gwt
(b)
34.5 gwt
(c)
69 gwt
(d)
13.8 gwt
42.
1
50g, 100g
150g
(a)
(b)
(c)
(d)
Uma places a wooden block on the table and attaches it to a spring balance with
a string. She measures minimum force required to pull the block by gradually
increasing weight on the block to 50g, 100g and 150g. She would observe that :
(a)
the minimum force remains same in each case.
(b)
the minimum force increases as the weight on the block increases
(c)
the minimum force decreases as the weight on the block increases
(d)
there is no definite relationship between minimum force and weight
placed on the block
-o0o-
Page 15 of 15