SARPANG
LOWER SECONDARY SCHOOL
SARPANG,
BHUTAN
ANNUAL
EXAMINATION 2014
Subject:
Science Total Marks: 100
Class:
VIII
Writing time: 2.5 Hours
Name:
…………….. Roll No. …………….Sec: …………….
READ THE FOLLOWING
DIRECTIONS CAREFULLY:
1) DO NOTwrite
for the first fifteen minutes. The time is to be spent for reading the
questions. After having read over the questions, you will be given two and half hours to answer all
questions.
2) The
question paper is divided into two sections, Section A and Section B.
In Section A, all are multiple choices; you must choose the appropriate
alternatives. In section B all questions are compulsory to attempt, Mark of
questions is given in the bracket.
3) Answer
to all the questions must be written in the answer booklet provided separately.
4)
Remember to write quickly but neatly.
5) If
you finish writing before time, close your answer booklet and sit quietly. Donot leave the examination hall unless
you get the permission and make sure that you have answered all the questions.
6) Don’t
forget to write Name, Role number and Section on the top of your answer booklet.
SECTION A (30x1=30 Marks)
Attempt all questions
Question
1
Direction:Read
the following questions carefully. For each question there are four
alternatives A, B, C, D. Choose the MOST correct alternative and write in the
answer sheet provided.
i.Nutrients
that gives ususal green colour to plants is
A. Potassium
B. Phosphorous.
C. Nitrogen
D. Magnesium
ii.
Field fallowing is done to improve the soil for cultivation. Field fallowing
means
A. Adding
fertilizer.
B. Ploughing
the field.
C. Growing
leguminous plant.
D. Keeping
the land uncultivated.
iii.
the highest milk yielding breed of cow is
A. Siri
B. Jatsa.
C. Brown
Swiss.
D. Mithun.
iv.Eggs
get hatched in ______ days.
A. 39.
B. 21.
C. 27.
D. 35.
v.
Which one of the following is the way to conserve the forest?
A. All
options A, B and C.
B. Selective
tree harvesting.
C. Not
cutting trees for torches.
D. Using
the dead trees for firewood.
vi.
Which statement of the following is false?
A. Rubber
comes from tree.
B. Trees
give us air to breathe.
C. Destruction
of trees brings change in the climate.
D. Trees
do not affect the amount of water in the stream.
vii.
The valency for all the elements below is “1” EXCEPT
A. Hydrogen
B. Sodium
C. Potassium
D. Calcium
viii.
The molecular formula for Magnesium chloride is
A. Mgcl3
B. MgCl
C. Mg2Cl.
D. MgCl2
ix.
Mixture of red and blue colours gives
A. Cyan.
B. White
C. Yellow.
D. Magenta.
x.
When an image fall on the screen, it is called as
A. Real
image.
B. Virtual
image.
C. Upright
image.
D. Inverted
image.
xi. Power station of animal cell is
A. vacuole.
B. ribosome.
C. cytoplasm.
D. Mitochondria.
xii.
The transportation system of our body is
A. Nervous
system.
B. Muscular
system.
C. Excretory
system.
D. Circulatory
system.
xiii. Spectrum is formed because of
A.
reflection
of light.
B.
refraction
of light.
C.
high
speed of light.
D.
dispersion
of
light.
xiv.
A hardworking laborer should eat more of
A. Fats
B. Proteins.
C. Vitamins.
D. Carbohydrates.
xv.
First dose of DPT vaccine for child is given at
A. At
six weeks.
B. At
nine weeks.
C. Soon
after birth.
D. After
nine months.
xvi.
The normal period of pregnancy in human is
A. 7
months.
B. 9
months.
C. 8
months.
D. 10
months.
xvii.
Which of the following is NOT an air
borne disease?
A. TB
B. Measles.
C. Cholera.
D. Common
cold.
xviii. Pollination in plants is usually carried out
by
A. people.
B. animals.
C. by plants.
D. by wind and insect.
xix.
The colour of an eye is determined by
A. Iris.
B. Lens.
C. Pupil.
D. Cornea.
xx.
Lens in eyes is
A. Convex.
B. Concave.
C. Biconvex.
D. Both
concave and convex.
xxi.Hydroxide
ions [OH-] present in
A. Few
acids.
B. Few
alkalis.
C. All
the acids.
D. All
the alkalis.
xxii.
A solution having pH 14 is
A. Neutral.
B. Highly
acidic.
C. Slightly
acidic.
D. Highly
alkaline.
xxiii.
The displacement of the following figure is
A. 4m.
B. 14m.
C. 10m.
D. 48m.
.
xxiv.
Mechanical advantage of single movable pulley is
A. 1
B. 2
C. Less
than 2
D. More
than 2
xxv.
An instrument used to measure fluid pressure is called
A. Ammeter.
B. Manometer.
C. Hydrometer.
D. Mercury
barometer.
xxvi.
Liquid pressure depend upon
A. All
A, B and C.
B. Depth
of liquid.
C. Density
of liquid.
D. Acceleration
due to gravity.
xxvii.
Scissors are an example of
A. Inclined.
B. First
class lever.
C. Third
class lever.
D. Second
class lever.
xxviii.
New colour code for live wire is
A. Red.
B. Black.
C. Brown.
D. Yellow
and green.
xxix.
The main aim of industries is to
A. Make
money.
B. Sell
the products.
C. Buy
the products.
D. Manufacture
goods.
xxx.
The mixture of crushed clay and limestone with water is called
A. Slurry.
B. Calcium
silicate.
C. Portland
cement.
D. Calcium
aluminate.
SECTION B (20 Mark)
(Attempt all the
questions)
Question 2
Fill in the
blanks:
(1x5=5)
i.
Deficiency in _______________results in
premature falling of leaves.
ii. After
fertilization a new cell is formed which is called the _________
iii. Pollination
which occurs in the same flower or different flowers of the same plant is
called _________.
iv. A
_____________ is a complete description of how the organism relates to its
physical and biological environment.
v. All
alkaline solutions contain ________________ ions.
Question
3
Write
down TRUE or FLASE for the given statements. (1x5=5)
i.
Cardiac muscle is only found in
heart……………
ii.
Vasectomy is done in female to prevent
pregnancy……….
iii.
Tetanus is also called as lockjaw………….
iv.
Bulbs connected in parallel glows
brighter than the bulbs connected in series………...
v.
Distance and speed are the examples of
vector quantity…………….
Question 4
Match
the items in column A with the correct response in column B. (1x5=5)
Column A
|
Column B
|
i.
Colostrums
|
a.
Loss of Water
|
ii.
Second class lever
|
b.
ammeter
|
iii.
Dehydration
|
c.
Doma
|
iv.
Gullet cancer
|
d.
Alcohol
|
v.
Current
|
e.
Mano-meter
|
f.
Bottle opener
|
|
g.
Human arm
|
|
h.
Milk
|
Question 5
Define the following terms.
(1×5=5)
i)
Radical.
ii)
Reforestation.
iii)
Ohms law.
iv)
Upthrust.
v)
Power of accommodation.
SECTION C (50 marks)
(Attempt
all the questions)
Question 6
I.
Distinguish between clay soil and sandy soil with TWO points
each. (2)
II.
Give TWO reasons why new breeds are better than locally bred pigs. (2)
III.
List atleast two impact of forest fire to the forest. (2)
IV.
A car changes its velocity from 20m/s to 100m/s in 4s. Find its
acceleration. (2)
V.
State Archimedes’s Principle.
(2)
Question 7
I.
Construct a diagram showing the refraction of monochromatic light
through a prism and mark the followings :
(3)
i.
Angle
of incidence as (i)
ii. angle of refraction as (r)
iii.
angle of emergence(e)
II.
write down the molecular formula of the following compounds: (2)
i.
Carbon dioxide ii. Zinc sulphate
iii.
Calcium hydroxide. Iv.
copper oxide
III.
What is menstruation?
(1)
IV.
Write TWO similarities between an eye and a camera. (2)
V.
A four –pulley block and tackle is used to lift a load of 3200N.
Calculate the effort required to lift it.
(2)
Question 8
I.
If you were the village health worker what advices that you will
give to the people of your village to prevent themselves from water born
diseases. Write at least four.(2)
II.
Why household electrical circuit have parallel connection. Give TWO
reasons. (2)
III.
What is an industry? List three types of industries.
(2.5)
IV.
Draw an animal cell and label the following parts: (1+2.5)
i.cell membrane ii.cytoplasm
iii. nucleus. iv.mitochondria.
v.nuclear
membrane
Question 9
I.
Draw a bar magnet and show the magnetic
lines of force around the magnet. (2)
II.
Which organelle in a cell is the most important and why? (2)
III.
What are ear ossicles?
(1.5)
IV.
Write atleast FOUR signs of secondary sexual characteristics in a
male. (2)
V.
Lhaden uses an electric heater rated 2 kW connected to the 250V
mains.
i.calculate the
current used by the heater.
ii.calculate
the cost of running the heater for a week when it is switched on for 10hours
every day. Electrical energy costs Nu.1per kWhr. (1+1.5)
Question 10
I.
Define chromatography.
(1)
II.
Differentiate between distance and displacement with TWO
points. (2)
III.
Explain the reasons for each of the following statements:-
i.People living in cold places far away from the road point tend to
get scurvy towards the end of the winter.
ii.People living in the mountains need to eat more fats than living
in the lower altitude.
(2X2=4)
IV.
Name the instrument used to measure blood pressure.
(1)
V.
Write the another name of: (2)
i.short-sightedness ii.
long-sightedness
Comments
Post a Comment