Friday, January 12, 2024
New Science 2
SEE Science Model Question
Subject: Science &
Technology Full
Marks: 75
Class: 10 Time: 3hrs. Pass
Marks: 30
Candidates are requires to write their answers according to the
instruction given.
Attempt all questions.
Group A (10×1=10)
1. Write the correct
alternatives
a. Which of the following is example of Phylum Platyhelmenthis?
i. Tapeworm ii Sandworm
iii. Earthworm iv. Hookworm
b. In a science laboratory, two
organisms are noticed. Both organisms are long and cylindrical. Organism
"A" has cylindrical segmented body and organism "B" has no
segmented body. Then, which of the following is correct?
i. Organism
A is hermaphrodite where as organism B is unisexual.
ii.
Organism A is unisexual whereas organism B is hermaphrodite.
iii.
Organism A is diploblastic whereas organism B is triploblastic.
iv.
Organism A is triploblastic whereas organism A is diploblastic.
c. Which of the following is
the phenotype ratio of monohybrid cross in Mendel's experiment?
i. 1:2 ii. 3:1 iii. 1:2:1 iv.
9:1
d. Which of the following is supported by honey farming?
i. Mustard farming ii. Candle
industry iii. Flower farming iv. Pea
farming
e. Which of the given equipment is based on Archimedes'
principle?
i.
Submarine ii. Hydraulic brake iii. Water pump iv. Thermometer
f. A
person inside lift weighing his/her weight on digital balance but suddenly lift
fall at acceleration of 9.8m/s2 then what would be change in the
weight balance? (Given: mass of a person is 50 kg)
i. weight will be shown
50 kg ii. Weight will be shown 490 N
iii.
weight will be 0 N iv.
Weight of the person increases due to acceleration
g. The critical angle of diamond is 240
then what will be the value of its refractive index?
i. 2.45 ii. 1.5 iii. 1.24 iv.
2.24
h. How
many independent variables should be there in one experiment?
i. 1 ii. 2 iii. 3 iv.
4
i. If
we have to put iron rims in wooden wheels of a cart, what should we heat?
i. Heat the metal rim
first and then heat the wheel.
ii. Heat the wheel and
the rim at the same time.
iii. Heat the rim and put
it in the cold wheel.
iv. Heat the wheel first
and then heat the iron rim.
j. In the given
chemical reaction which one is the X?
HCl + X NaCl + H20
i.
NaOH ii. Na iii. NaH
iv. Na + H2O
Group B (9x1=9)
2. Give very short answer
to the following questions.
a. Define hermaphrodite.
b. What is meant by water canal system in porifera?
c. What type of cell division is shown in the diagram?
d. What
is variable?
e. On
what condition does a body become weightless inside of the earth’s
gravitational field?
f. What is the relation between specific heat capacity and rate
of increase or decrease in its temperature?
g. What do you mean by
reef gold and alluvial gold?
h. Compare the
ionization of Mg and Al.
i. Write the full form of IUPAC.
Group C (14x2=28)
Give short answer to the following questions.
3. Write any two differences between bird and bat.
4. If 'A' and 'B' are fertilized and unfertilized eggs
respectively. Which type of honey bee is developed from 'B'? Also, write one
function of such bee.
5. Describe the process of In Vitro fertilization (IVF) in
brief.
6. Classification
of living being is important in the study of biology, why?
7. Write down one use of each of following plants:
a) Titepati b) Yarsagumba
8. Draw
a chart showing cross between red and white flowered pea plants till Fzs
generation. Write down phenotype and genotype of F2 generation.
9. Prove the equation that acceleration due to gravity is
inversely proportional to the square of radius.
10. A
hydraulic machine is considered as a force multiplier. Give reason.
11. Sunita needs 15 kg of water at 38°C to take bath. But, she
has water at 20°C. Calculate the minimum amount of heat energy required to heat
the water to the required temperature.
12. When
the letters written on the paper are observed from the top of a glass slab, the
letters appear to be slightly raised, why?
13. Define homologous
series.
14. How does the
concentration of solution affects the rate of chemical reaction? Write down
with example.
15. Unsaturated
hydrocarbon is more reactive than saturated hydrocarbon, why?
16. How are metals
refined by electro-refining method? Illustrate with one example.
Group D (7x4=28)
Give long answer to the following questions.
17. A
and B are husband and wife, they have only four their daughters, A blames to B
for the birth of only daughters. Who is more responsible and why? Make a chart
with your logic.
18.
Despite the availability of medicinal herbs in our surrounding, we are
dependent upon imported medicines. What could be the cause of this situation?
What can we do to increase the use of medicinal herbs?
19. When the white ray of light enters to the prism, only the visible uppermost and lowermost rays of light are shown in the diagram
a. Name the rays
A and B.
B
b. Which ray has
more speed in the glass
medium?
c) Which phenomenon is shown in the given diagram?
d) Ray B bends more than the ray A. What is the reason behind
it?
20. Explain the clinical thermometer with diagram.
21. The different weight of a piece of a stone on weighing in
three different media; air, water and salt solution are given in the table
below. Answer the following questions.
Medium |
Weight |
A |
15N |
B |
20N |
C |
17N |
a) Of the three media A, B and C which is water and which is
salt solution?
b) If the weight of 1 kg mass in air is 10N. Determine the mass
of the stone
c) Determine the weight of water displaced by the stone.
22. Given diagram is the apparatus used in the preparation
of ammonia gas in laboratory. Answer the following questions observing the
diagram.
i. Why is the hard
glass test tube inclined downward? [1]
ii. Why is ammonia gas not collected over water? [1]
iii. How can you confirm that gas jar is filled with ammonia gas? [1]
iv. What happens when ammonia is treated with Na metal? [1]
23. State modern periodic table. Write down the electronic
configuration of the element which lies in second period and sixth group of the
modern periodic table based on sub-shells. Write down two factors that
determine the reactivity of elements. [1+2+1]
END
SEE Science and technology
SEE practice exam 2080
Class: - Ten F.M. – 75
Subject: - Comp. Science Time: - 3:00Hrs
Section A ( Multiple Choice Questions)
1.
Circle
the correct alternatives. (10×1=10)
a)
Which of
the following is derived unit?
i. Kelvin ii.
Mole
iii. Hertz iv.
Candela
b)
Which of
the following of plants need both land and water to complete their life
cycle?
i. Tracheophyta ii.
Bryophyta
iii. Pteridophyta iv. Thallophyta
c)
Experiment
of different shape of pod of pea plant showed the given result. Choose the incorrect
correct statement:
i. B is F1 and C is F2
generation
ii. All the peas at B are hybrids
iii. B represents First law and C represents second
law of Mendel.
iv. B represents purity of gamets because all are
same and pure.
d)
Which part
of Bojo is used as a medicine.?
i. root ii.
rhizome
iii. root iv.
leaf
e)
Hydrometer
is based upon :
i. Newton's
Law ii. Archimedes
principle
iii. Law
of floatation iv.
Charles law
f)
An object
is placed at the centre of curvature of a convex lens. It's image
i. will be formed at focus
ii. will be magnified twice.
iii. appear of same size.
iv. will be virtual.
g)
Under what
condition can open universe be hypothesized?
i. When
average density is greater than critical density
ii. When
average density is less than critical density
iii. When
average density and critical density are equal
iv. When
average density and critical density are not comparable
h)
Which of
the following is not a alkaline metal?
i. B ii. Be
iii. Mg iv. Ca
i)
What type
of reaction is the reaction between sodium chloride and silver nitrate?
i.
combination reaction
ii. Single
displacement reaction
iii.
Double displacement reaction
iv.
decomposition reaction.
j)
Which of
the following statement is correct?
i. Forth
floatation is done for lighter impurities.
ii. Gravity
separation is done if ore and impurities have same density.
iii. Distillation
is done for heavy metals.
iv. Roasting
is done in ores having no oxygen.
2.
Very
short answer type questions. (9×1=9)
a)
Write one advantage of digital
transmission?
b)
What is the common key feature of
plant fern, pine and orange?
c)
What is nuptial flight?
d)
State the structure of DNA in one
sentence.
e)
Name any one protected species of
reptiles in Nepal.
f)
What can you conclude after
performing coin and feather experiment?
g)
You are cooling a hot water. Which
portion of the given graph shows anomalous expansion?
h)
What happens to the reactivity of
elements while moving from left to right in a period of modern periodic table?
i)
Write the chief ore of aluminium and copper.
Section
C
Short
Answer type Questions (14 X 2 =28)
3. Yogesh wants to study about the effect of body exercise
and amount of nutrients in the loss of body weight at he same time. What are
the drawbacks of research topic? How can this study be corrected?
4. Identify the following organism and write one more
character of each:
a. having pneumatic bones, glorified form of
reptiles
b. Having external ears
5.
The figure below shows the diagram for a local
technology used in rural area for
farming insects. Mention the significance of this in the rural economy.
6. "There is no any role of
mother for the determination whether a child is a male or female". Justify
the statement with necessary diagram.
7. While performing a test to
identify the blood group of a person following result is obtained. Identify
his/her blood group. Redraw the diagram if the person lacks all the antigens A,
B and D.
8. Establishment of National Park is
mainly for the conservation of Wildlife. Wildlife frequently destroys
agricultural fields and even takes lives of people and domesticated animals.
Discuss any two cause of conservation of wildlife despite of these disasters.
9. In a hydraulic lift , the cross
section areas of large and small pistons are 5 m2 and 0.25 m2
respectively. Calculate the force required to lift up a car of mass 1200 kg.
10. There is no significant
difference in temperature of day and night in costal area. Justify the
statement.
11. A person of 45 years has
blurred vision due the deposition of a layer of protein on the eye lens.
Explain in short how this is treated by eye surgery.
12. Explain Right hand thumb rule
with figure.
13. Explain Hubble's law in short with diagram.
14. Write the electronic configuration of sulphur in sub-shells and determine its period and group.
15. A students burns a magnesium
ribbon in the class. The ribbon burns producing white ash. Write the balanced
chemical reaction and name the white ash.
16. Lime water can be used to test
carbondioxide gas. Explain in short with chemical reaction.
Secion D (Long Question Answer)(7×4=28)
17. Digital
well-being is the extent to which we can do these things in our digital lives.
So digital well-being may be defined as having the ability to handle online
stress, engage in healthy digital behaviors, and use our technologies in ways
that help us thrive. This can be monitored by using Digital Wellbeing Feature
on Mobile application.
i. Why
should the parents get knowledge about the information explained in the
paragraph ? (2)
ii. What
is the importance of digital well beings for students (2).
18. ….It
is the technique in which semen with living sperms is collected from the male
and introduced into female reproductive tract at proper time with the help of instruments.
This has been found to result in a normal offspring. In this process, the semen
is inseminated into the female by placing a portion of it either in a collected
or diluted form into the cervix or uterus by mechanical methods at the proper
time and under most hygienic conditions.
a. What is the name of the technique? (1)
b. Now a days this technique is
preferred than the natural process for the
reproduction of cattle. Why? (2)
c. It may also save some disadvantage.
Mention if any. (1)
19. The figure shows a treatment to a
serious cardiac disorder the following questions:
a. What had happen to the
patient? 1
b. What is being done? Explain. 2
c. Write any two causes for this
disorder. 1
20. a. Study the table and fill in the
box (2)
Pair of places |
value
of 'g' is more at: |
Value
of 'g' is less at: |
Reason |
Equilateral/ polar region |
polar region |
equilateral region |
Radius of earth is more at equator
and less at poles |
Base and top of Mountain |
(a)………….. |
(b)………… |
(c)………. |
b. A
cricket ball thrown vertically upward into the sky reaches a height of 30 m.
Calculate the velocity with which it is thrown and time taken to reach the
maximum height. (2)
21. a. A person sees a fish in the river
water. What knowledge should he know to kill the fish using a sphere? [2]
b. A microscope can focus object
kept at a fixed place only, but human eye can see both distant and nearby
object. How is it possible? Explain. [2]
22. Study the given figure and answer
the following questions:
a. Which type of transformer is it?
Why? (1)
b. If 400 turns produces secondary
voltage, calculate the number of turn in primary coil. [2]
c. Why is iron core not a single
core but a collection of thin laminated
sheets? [1]
23. Figure below shows the preparation of Ammonia
gas in laboratory. Answer the following questions:
i. Name X and Y. [1]
ii. Why is a substance 'A' used in
the experiment? [1]
iii. How can you test whether the
gas is ammonia or not? [1]
iv. Write two uses of this gas [1]
***
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