RISING NEPAL SECONDARY BOARDING SCHOOL

Class:- 7 FINAL EXAMINATION 2077 F.M:50

Time:- 2hrs. Sub:- Science P.M:16

Candidates are required to give their answers in their own words as far as practicable. The figures in the margin indicate full marks.

All the questions are compulsory.

                                            .

1. Fill in the blanks: 1*5=5

  1. ………is a good conductor of heat and electricity though it is a

non-metal

  1. The shortest distance between any two point is called……
  2. The smallest particle of an element is called……..
  3. Separation of salt from sea water is done by……
  4. ………..is an instrument to measure the temperature of substance .

2. Write ‘T’ for true or ‘F’ for false : 0.5*5=2.5

  1. The rate of change in displacement is called velocity.
  2. The energy in a moving object is electrical energy 
  3. Cytoplasm provides green colour in plant cell
  4. Worms excrete through malphigian tubules
  5. Wheelbarrow is an examples of second class lever


3. Match the followings 0.5*5=2.52

  1. 1 Pascal                   i. Venus
  2. Radiation                ii. 1 N/m2
  3. Pressure                 iii. force/area
  4. Brightest planet    iv.  Does not need medium 
  5. Heaviest planet     v.  Jupiter


4. Give two difference between. 2*2=4

  1. Brass and bronze 
  2. Saturated and unsaturated solution 

5. Give reason 2*3=6

  1. The needles and nails are made pointed at the end 
  2. Ventilations are installed at the upper part of the room
  3. Graphite is good conductor of heat and electricity though it is

non-metal .why?

6. Answer the followings questions   (20)

  1. What is pressure?  give its SI units.
  2. Find the pressure exerted by a pillar of 25000 N in the ground if

its surface area is 5m2 .

  1. Define acceleration and write its unit
  2. Write two examples of each of three classes of lever.
  3. Write any two properties of non-metal .
  4. List any three characteristics of amphibian
  5. What is urbanization? What  are the causes of urbanization ?
  6. What are rocks? Write down the types of rocks 

7. Study the following figure and answer the questions below :2

  1. Flower: Parts of a Flower, Importance, Example, Solved QuestionsIdentify the given figure 

A

B

ii. Label A and B

8. Draw neat diagram of animal cell and labelled it :3

9. Name the forms of energy in the following substances.(4*0.5=2)

a. Food   b. A burning candle   c. Ringing bell   d. A bar magnet 

10. Write molecular formula of followings compounds (4*0.5=2)

a. Sulphuric acid 

b. Ammonia 

c. Calcium hydroxide 

d. Water

11. How many square centimeters are there in 1 sq.meter?

The End