class-9th exam-sa-2 session

NUNPA7V
II
SUMMATIVE ASSESSMENT – II (2014-15)
SCIENCE /
Class – IX /
IX
90
3
Time allowed: 3 hours
Maximum Marks: 90
(i)
(ii)
(iii)
(iv)
(v)
(vi)
(vii)
(viii)
(ix)
1 3
4 5
6 16
17 21
25
33
(xi)
34
36
General Instructions :
(vi)
(vii)
(viii)
(ix)
(x)
(xi)
Page 1 of 10
70
24
22
2
23
3
5
(x)
(ii)
(iii)
(iv)
(v)
50
22
24
(i)
30
30
The question paper comprises of three Sections, A, B and C. You are to attempt all the sections.
All questions are compulsory.
There is no choice in any of the questions.
All questions of Section-A, Section-B and Section-C 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 and 5 in Section-A are two marks questions. These are to be answered in
about 30 words each.
Question numbers 6 to 16 in Section-A are three marks questions. These are to be answered in
about 50 words each.
Question numbers 17 to 21 in Section-A are five marks questions. These are to be answered in
about 70 words each.
Section B has 3 OTBA questions. Question number 22 is two marks, Question number 23 is
three marks and Question number 24 is five marks question.
Question numbers 25 to 33 in Section-C 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.
Question numbers 34 to 36 in section C are two marks questions based on practical skills. These
are to be answered in about 30 words each.
SECTION-A
1
1
State the numerical value of Avogadro Constant.
2
1
(a)
(b)
Define :
(a)
Atomic number
(b)
Mass number
3
1
Name any two diseases caused by protozoa.
4
2
2s
340 m/s
A person claps his hands near a cliff and hears the echo after 2 sec. If the speed of the sound
in air is 340 m/s, find the distance of the cliff from the person.
5
30
6
2
g
= 10 m/s2
Calculate the work done by the force of gravity when a 30 kg child falls from the top of a 6 m
high wall. Given g = 10 m/s2
6
(a)
3:8
3
(b)
1/16
(a)
Carbon and oxygen combine in a ratio of 3 : 8 by mass to form carbon/dioxide.
Deduce the ratio by number of atoms in the compound.
(b)
While searching for various atomic mass units, scientists initially took 1/16 of the mass
of an atom of naturally occurring oxygen as the unit. State two reasons. (atomic masses
O16, C12)
7
(a)
3
(i)
(b)
Page 2 of 10
(ii)
(a)
(b)
8
(i)
(ii)
Define the following terms with one example each.
(i)
Isotope
(ii)
Isobar
Name the elements whose isotopes are used in :
(i)
Nuclear Reactor
(ii)
Treatment of cancer
(a)
3
(b)
5
6
(a)
How many electrons are present in the valence shell of nitrogen, oxygen and argon ?
(b)
Nucleus of an atom has 5 protons and 6 neutrons. What is the atomic number, mass
number and electronic configuration of the atom ?
9
3
(a)
(b)
Tabulate the following features and compare Reptilia, Aves and Mammalia
(a)
Exoskeleton
(b)
Number of chambers in heart.
10
(a)
3
(b)
(a)
(b)
For the prevention of infectious diseases, some public health programmes of
childhood immunisation are conducted in the country. Name four such diseases
which are covered under this programme.
Name a disease which has been eradicated from the world, state the principle behind
its eradication.
11
3
What are Phanerogams ? Name its two groups along with the criteria of division.
12
3
(i)
1.0 g
0.5 m/s
(ii)
250 g
0.5 m/s
Compare the power at which each of the following is moving upwards against the force of
gravity ?
(i)
a butterfly of mass 1.0 g that flies upward at a rate of 0.5 m/s.
Page 3 of 10
(ii)
a 250 g squirrel climbing up on a tree at a rate of 0.5 m/s.
13
3
500 N
2.5 m2
mathematical formula
Give the
that relates thrust and pressure. Define
1 pascal.
Calculate the thrust and pressure exerted by a block of 500 N on the surface of table if the
surface area in contact is 2.5 m2.
14
3
(a)
(b)
Define pitch and quality of sound Draw the following :
(a)
A transverse wave on a graph.
(b)
A longitudinal wave on a graph.
15
(a)
?
(b)
(i)
(a)
What is upthrust ?
(b)
What is the use of (i) Lactometer, (ii) Hydrometer ?
3
(ii)
16
3
(i)
(ii)
(iii)
Shanaya and her brother Ronit went for boating in Naini lake. They were provided special
jackets to wear before riding the boat. Ronit could not understand the purpose which was
explained to him by Shanaya. She assured him that it was for their safety.
Page 4 of 10
(i)
What is the function of a life saving jacket ?
(ii)
On what principle is it based ? State the principle.
(iii)
What quality of Shanaya is being reflected here ?
17
5
(
Ca40 u, Cl35.5 u, K39 u, N14 u, O16 u, H  1 u Mg24 u)
Elaborate the basic difference between the formula unit mass and the molecular mass. Write
the formulae for calcium chloride, potassium nitrate and magnesium hydroxide and compute
their molecular masses.
(Atomic masses Ca40 u, Cl35.5 u, K39 u, N14 u, O16 u, H1 u Mg24 u)
18
5
Create a flow-chart to show the classification of four eukaryotic kingdoms.
19
5
Akhilesh is having headache and fever. He takes some pills to bring down the fever and
headache before going to the doctor. What is this type of treatment called ? How can we
reduce the effects of the disease ? What is the limitation of this type of treatment ? What is the
possible remedy of these diseases ?
20
5
(a)
(b)
(c)
(a)
(b)
(c)
21
How and where the vibrations in the eardurm get amplified in the ear ?
Name the outer ear and give its function.
Identify the factor that makes sound soft or loud ? Give one example each for soft and
loud sound.
5
(a)
(b)
2
10 ms-1
g = 10
Page 5 of 10
m/s2
(a)
(b)
Define one Joule of kinetic energy.
A ball of mass 2 kg is thrown up with a speed of 10 m/s. Find the kinetic energy of the
ball at the time of throwing. Also find the potential energy of the ball at the highest
point. (Given g = 10 m/s2 )
/SECTION – B (OTBA)
(* Please ensure that open text of the given theme is supplied with this question paper.)
Theme : Understanding the Environment of Mars
22
2
Suggest the various accessories which can support scientists to study about the Martian
atmosphere.
23
3
Is the average air pressure on earth and mars same ? Comment.
24
5
Would it be possible for humans to develop colonies on Mars ? Give suitable reasons for your
answer.
Section – C
25
1
(a)
Page 6 of 10
I
I
II
III
IV
V
60
50
40
30
70
30
40
40
50
70
III
(b)
I
V
(c)
II
IV
(d)
III
V
A student performs the experiment to verify the law of ‘reflection of sound.’ He/she records
following values of angle of incidence and angle of reflection :
S. No.
Angle of incidence
Angle of reflection
Set I
60
30
Set II
50
40
Set III
40
40
Set IV
30
50
Set V
70
70
The sets recorded correctly by him/her are :
(a)
set I and III
(b)
set I and V
(c)
set II and IV
(d)
set III and V
40 cm2
‘M’ kg
26
10000
1
Pa
M
g10 ms2 :
(a)
20kg (b)
5kg
(c)
4kg
(d)
2.5kg
A metal cuboid of mass ‘M’ kg rests on a table with surface area of 40 cm2 in contact with the
table. The pressure exerted by the cuboid on the table surface is 10000 Pa. Value of M is (given
that g10 ms2) :
(a)
20kg (b)
5kg
(c)
4kg
(d)
2.5kg
27
1
(a)
(b)
(c)
(d)
We choose a slinky of larger length to perform experiment on speed of pulse because :
(a)
(b)
(c)
(d)
pulse cannot be formed on a short slinky.
pulse can move easily in it.
time taken to move from one end to another can be accurately determined.
it is easier to perform.
28
1
(a)
(b)
(c)
(d)
In which of the following plants gills are found ?
(a)
Agaricus
(b)
Spirogyra
(c)
Mosses
(d)
Ferns
Page 7 of 10
10.6g
29
4.4g
(a)
16.4g
(b)
0.16g
(c)
24g
(d)
8.2g
12g
1
1.8g
In a chemical reaction 10.6g of sodium carbonate reacted with 12g of ethanoic acid. The
products were 4.4g carbon dioxide, 1.8g of water and sodium ethanoate. The mass of sodium
ethanoate formed is:(a)
16.4g
(b)
0.16g
(c)
24g
(d)
8.2g
30
1
(a)
(b)
(c)
(d)
Aqueous solutions of silver nitrate and sodium chloride are made to react in a closed vessel.
Which of the following observations is correct ?
(a)
A white precipitate is formed
(b)
Blue precipitate is formed
(c)
A gas is evolved with effervescence
(d)
A slow reaction takes place
31
1
(a)
(b)
(c)
(d)
The veins seen in the leaves of dicotyledonous plants are :
Page 8 of 10
(a) parallel
(c) zig-zag
(b) reticulate
(d) perpendicular
32
1
(a)
(b)
(c)
(d)
Which of the following is a feature of monocotyledonous plant :
(a) reticulate venation in leaf
(b) trimerous flowers
(c) tap root
(d) pentamerous flowers
33
1
(a)
(b)
(c)
(d)
The disease which is not transmitted by mosquito is:
(a)
Malaria
(b)
Dengue
(c)
Brain fever
(d)
Pneumonia
34
0–100 mL
Draw a diagram of graduated cylinder of range of 0–100 mL.
500 cm3
35
2
2
g10 m/s2
A ball filled with air has a volume of 500 cm3. Calculate the minimum force applied by a child
to put it completely inside the water. (Take g10 m/s2)
36
2
Which characteristic feature of cockroach helps us to place it in its phylum ? How many legs
are present in a cockroach ?
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