Rising Nepal Secondary Boarding School

Final Examination 2074

Class: 4 F.M. 50

Time: 2 hrs. Subject: Science P.M. 16

1. Answer the following questions: 20

  1. What is turbine? What is the oldest and simplest form of water turbine?
  2. What do you mean by ground water?
  3. What are the uses of hand pump? Write any two uses.
  4. What is good communication?
  5. From where can we get health services?
  6. What are the uses of radio? Write any two uses.
  7. What are the uses of turbine? Write any three uses.
  8. What are nutrients?
  9. Name four body building food.
  10. What should we not eat junk food?

2. Choose the best answer: 5

a) Which of the following is two-way communication media?

i) TV ii) Newspaper iii) Radio iv) Telephone

b) Which of the following is the underground source of water?

i) River ii) Pond iii) Well iv) Lake

c) Which of the following is a part of turbine?

i) Shaft ii) Axle iii) Motor iv) Handle

d) Which of the following is an energy giving food?

i) Apple ii) Rice iii) Tomato iv) Bean

e) Deficiency of which vitamin causes Night Blindness?

i) Vitamin A ii) Vitamin B iii) Vitamin C iv) Vitamin D

3. Fill in the blanks with the words given in the box: 2.5

[Jet-engine, brain, Fax, elders, worthless]

  1. ………… sends written message instantaneously.
  2. ……….. is also known as turbine engine.
  3. The collected information will be …………. if we do not transmit it to other.
  4. Drugs affects the ………. of the person and harms body system.
  5. We should inform our ………… about the sick person.

4. Match the following: 5

Sanitation one-way communication

Communication Scurvy

Radio good environment

Vitamin C exchange of ideas, information

Protein body building food

5. Write 'T' for true and 'F' for false statements: 2.5

  1. Communication is the process of sending message from a sender to the receiver.
  2. Spring is man-made source of water.
  3. Rotor is connected to one end of shaft.
  4. Vitamins are known as energy giving food.
  5. Junk food keeps us fit and healthy.

6. Name the following: 5

  1. Three types of turbine
  2. Two protective food
  3. Two media for two-way communication
  4. Two parts of radio
  5. Two parts of a turbine

7. Complete the following statements: 5

  1. A wireless communication media is ………….
  2. Windmills that generate electricity are known as ……………
  3. Our skin throws out ……………
  4. The moving liquid or gas contains …………….
  5. Water is necessary for ………………..

8. Draw a well labelled diagram of hand pump. 5

-O-