SEE Practice Model Set 4
[EWA3B0C1D2]
Write an answer in your own creative way on the basis of given instructions.
Group ‘A’ [10×1= 10]
Multiple choice questions
1. Write the best alternative of the following questions in the answer sheet.
a. Each of the following represents analog signal?
A. Infrared Ray thermometer
B. Computer
C. Smart watch
D. Short wave radio
b. Why is snail kept in mollusca phylum?
A. Body is divided into head, biseral mass, muscular foot and mantal.
B. Locomotion shows with the help of tube feet.
C. Body is divided into head, thorax and abdomen.
D. They are found in moist soil and water.
c. Shyam saw two invertebrates P and Q in a pond. He found that P is the first multicellular animal and Q is the first tissue graded animal. By studying these characteristics of the animals which of the following statement match?
A. Organism P is diploblastic whereas organism Q is triploblastic.
B. Body of P bears pores whereas body of Q beers coelenteron.
C. The body of both P and Q is not diploblastic.
D. The body of both P and Q has tentacles.
d. Which part of calamus is used for medicinal purpose?
A. Rhizome
B. Leaf
C. Fruits
D. Flower
e. What would be the weight of a body of mass 20 kg at distance 12000 km from the centre of the earth of mass 6 * 10 ^ 24 kg?
A. 35 N
B. 45N
C. 55N
D.25N
f. A ship going from sea to river displaces more water why?
A. Change the buoyant force.
B. Lower the buoyant force.
C. Maintain the same buoyant force.
D. Increase the buoyant force.
g. Study the given figure and identify A and C.
A. A -red, C – yellow
B. A – Violet, C – Red
C. A – Green, C – Violet
D. A – red, C – Violet
h. What is the value of Hubble’s constant (H)?
A. 80km/s/Mpc
B. 83km/s/Mpc
C. 70 km/s/Mpc
D. 73 km/s/Mpc
I. If X is a metal, what is the valency of X in the following reaction?
X + 2 HCl > HCl2 + H2
A. 1
B.2
C. 3
D. 4
j. Organic matter is considered as a major source of water pollution caused by wastes of food, animal and human excreta, garbage etc: Which of the following is a threat to aquatic life due to the excess of organic matter in water?
A. The lack of space available to aquatic life.
B. Microorganisms consume dissolved oxygen to decompose organic matter.
C. Organic matter is swallowed by small animal.
D. Decomposition of organic matter increases the temperature of water.
Group ‘B’ [9 X 1= 9]
2. Write very short answers of the following questions.
a. Why are controlled variables important?(U)
b. State Archimedes’ principle.(K)
c. Anu cannot distinguish Red and Green colour. what is main cause of this problem? (U)
d. A student of the class can see letters written on whiteboard when s/he sits on first bench and cannot see clearly when s/he sits on last bench. What type of lens is used to remove this defect? (A)
e. What happen when bar magnet is placed inside solenoid at rest? (A)
f. What is the main cause of determination of future of universe? (U)
g. Right d name off men aur off iron. (K)
h. In the laboratory, Pratik chose electro- refining process to purify copper obtained from reduction process. He connected impure copper to negative terminal of cell and pure copper to positive terminal of cell and copper sulphate is used as electroplating. What is the mistake he made in this process? (U)
I. Write a difference between the given hydrocarbons on the basis of reactivity.(U)
Group ‘C’. [14X2=28]
Short answer questions.
3. Use fundamental units you show that equation P = IV is homogeneous, where I is electric current, V is voltage and P is power.
4. Write any two characteristics of plant Kingdom.
5. Write any two roles of honey bee on ecosystem.
6. Mitosis cell division is called equational division. why?
7. India has donated murrah buffalo to Nepal. Mention any two benefits gained by farmers on breeding buffalo with murrah buffalo instead of local species of buffaloes.
8. Write two differences between haemophilia and leukemia.
9. The number of Red Panda is decreasing in Nepal. What measures can be done to protect the panda? Write any two measures.
10. Write any two factors on which gravity on the surface of a heavenly body depends.
11. Prove that if the earth attracts two bodies placed at the same distance from the centre of the earth with the same force then their masses are equal.
12. Lamp is lit in the running bicycle by the help of a dynamo but it goes off when bicycle is stopped. Give reason.
13. In domestic household wiring voltage of 220 V is supplied. A battery of mobile works with 3.7 V. Draw a net diagram of transformer used in mobile charger.
14. Write a balanced chemical equation between the reactions of a metal of group IIA with a non-metal of group VIIA.
15. Write the name of members of alkyne which contains an equal number of hydrogen and carbon. Write any one use of it.
16. “It is dangerous to use chemical pesticides for human health.” Justify this statement by using your two arguments.
Group ‘D’
Write long answer. [7X4=28]
17. Study the figure and answer the following questions. 
I. Write any two examples in which above technology is used.
ii. Write the function of transmitter and receiver.
18. A family has got only two daughters. Does it mean that the husband does not produce sperm bearing ‘Y’ chromosome? Explain it by showing sex determination chart.
19. The composition of blood is shown in the figure. Study the figure and answer the following questions.
I. Write the name of B.
ii. Which disease may occur if the number of A is less in blood?
iii. What is the main function of C?
iV. What is the life span of B?
20. Study the given table and answer the following questions.
Metal | specific heat capacity |
A | 234 J/Kg⁰C |
B | 400 J/Kg⁰C |
C | 900 J/Kg⁰C |
I. Which one get cooled faster? If equal masses of these three metals are heated to maintain same temperature and then they are exposed in the air? Why?
ii. Which one of these three metals of same masses need more heat energy to maintain the same temperature? Why?
21. A man can read books only keeping away from his eye. Answer the following questions on the basis of this fact.
I. What is the type of defect of vision of eye?
ii. Write one cause of these defect of vision.
iii. What suggestion do you give to remove this defect?
iV. Draw a diagram showing the correction.
22. Atoms of a elements A,B,C D E,F,G and H have equal number of orbits but different number of valence electrons. Element A and G combine to form and ionic compound. It is used to add in vegetables at the time of cooking food. Oxides of element A and B are basic while E and F are acidic. The oxide of D is neutral. Based on this information, answer the following questions.
I. To which period of modern periodic table do the listed elements belong?
ii. Write the symbol of highly reactive metal and highly reactive nonmetal from the listed elements.
iii. Write the symbols of elements that do not take part in chemical reaction.
iV. Write any important difference between B and F.
23. Draw a well labeled diagram of laboratory preparation of carbon dioxide gas. How is this gas tested by using litmus paper? Explain.
–————– Best of Luck ————-