Compulsory Science Question Paper | 2075 [2019] | RE-111BP | SEE


SEE - 2075 (2019)
COMPULSORY SCIENCE (अनिवार्य विज्ञान)
Code - RE-111'BP'
(New Course)
Time: 2 hours 15 minutes
Full Marks: 75
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Answer all the questions. (सबै प्रश्नहरुको उत्तर दिनुहोस्।)


समूह 'क' (Group 'A') [15x1=15]

1. Write short answer of the following questions.

a. What is the value of acceleration due to gravity 'g' at the centre of the earth?

b. What is atmospheric pressure?

c. Write any two examples of bio-fuel.

d. Write the relation between heat gain or loss by a body with its surface area.

e. The magnification is less than 1. What does it mean?

f. What is acid?

g. What is an alloy?
h. What is IUPAC name of methyle alcohol?

i. Write one special property of water glass.

j. Write the name of nongranular leukocytes.

k. What is kinetochore?

l. Name any two plant hormones.

m. Write scientific name of pea.

n. What is environmental pollution?

o. What is crude oil?

समूह 'ख' (Group 'B') [13x2=26]

2. A permanent magnet cannot be used in the electric bell. Why?

3. How do ciliary muscles focus our eye?

4. Write any two differences between Archimedes principle and principle of floatation.

5. Alcohol thermometer can measure the temperature of an ice but cannot measure the boiling point of water. Why?

6. What is the reactivity of non-metal when its size increases? Why?

7. Write the following word equation into balanced formula equation.
Nitric acid + calcium hydroxide → calcium nitrate + water

8. A chemical substance gives hydrogen ion and chloride ion when dissolved in water. Similarly another chemical substance gives sodium ion and hydroxide ion. Write their molecular formula and also chemical reaction between them.
9. Name the compound having the given structural formula. Which compound is formed when one hydrogen atom from each carbon is replaced by -OH group and also write its one application.

10. Write any two differences between adult silkworm and its larva.

11. Walls of auricles and ventricles are not of same thickness. Why?

12. Write any two differences between variation and mutation.

13. Write any two functions of medulla oblongata.

14. Write any two similarities between the Earth and Venus.

समूह 'ग' (Group 'C') [6x3=18]
15. Mass of Jupiter is 1.9x1030 kg and mass of the Sun is 2x1030 kg. Calculate the distance between them if the gravitational force between them is 4.3x1029N.

16. "The world will face energy crisis in near future." Justify this statement.

17. How can you prepare soap? Write with word/formula equation.

18. Draw wel-labelled diagram of laboratory preparation of carbondioxide gas
with balanced chemical equation.

19. Draw a diagram of sex determination.

20. Identify any three ways for the management of domestic wastage.

21. Observe the given figure and answer the following questions.
i) Which effect of current electricity is shown in the diagram?
ii) What is this process called?
iii) What is the magnet so formed by this process called?
iv) How can we increase the strength of magnet formed by this method? Write any two ways.

22. Answer the following questions if atomic number of potassium is 19.
i) Write the electronic configuration of it on the basis of sub-shell.
ii) Write its group and period in periodic table.
iii) Write the balanced chemical equation of chemical reaction between this element and chlorine.

23. Study the given diagram and answer the following questions.
i) Name the method of vegetative propagation.
ii) Write a cause that vegetative propagation is applied commercially.
iii) Write two importance of this propagation.

24. Following are the findings in a study done on the earth environment. The temperature of respective environment is increasing. The number of amphibians are decreasing. Human beings are suffering from cataracts and skin cancer.

Answer the following question on the basis of above facts.
i) What is the cause of above findings?
ii) What is to be done to remain safe from above conditions?
iii) Write one more similar harmful effect to human health.
iv) What happens to the environment temperature at this condition?



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