Joint Examination Board
PABSON, Bhaktapur
Second Term Exam - 2066
Class: VIII F.M: 75
Subject: Science Time: 2.30 hrs. P.M: 30
Physics
Q No. 1) Define fundamental unit. Write SI unit of density and current.
(1+1)
Q No.2) Define relative motion. Write the formula of acceleration and velocity. (1+1)
Q No.3) Winding roads are made in hills. Why? Classify see-saw and shovel. (1+1)
Q No.4) Write two differences between barometer and pressure gauze. (2)
Q No. 5) What do you mean by power? Write one difference between potential and kinetic energy. (2)
Q No.6) What type of energy is possessed in the following actions? (2)
a) Leg lifted to kick ball c. Burning matchstick
b) Ringing bell d. Bread
Q No.7) What effect is seen in kinetic energy possessed by body when its velocity is tripled? Show mathematically. (2)
Q No.8) What are the temperatures of the boiling and freezing water in Fahrenheit and Centigrade scale in the sea level? (2)
Q No.9) Kink is made near the bulb of clinical thermometer, why? (2)
Q No.10) Define refraction of light. Write one use of concave mirror. (2)
Q No.11) Write any two differences between converging mirror & diverging mirror. (2)
Q No.12) Study the given figure and answer the followings. (2)
i) Name AB & BC.
ii) Which one is rarer & which is denser medium?
Q No.13) Write energy conversion by radio and microphone. Ram lifts a weight of 50 kg to a height of 10m in 2m. Shyam lifts the same weight to same height in 3 minutes. By how much, power of Ram is greater than that of Shyam? (2+3)
Q No. 14) What types of images are formed by a concave mirror when an object is placed
i) between C and F ii. between F and P
Also write one nature of image in each. (2.5+2.5)
Chemistry
Q No.15) Write molecular formula of Calcium carbonate and Magnesium chloride by criss-cross method (2)
Q No.16) Name the methods of separation for following mixtures (2)
a) Rice and husk c. Alcohol and water
b) Cream from butter d. Red ink & black ink
Q No.17) Write two differences between Acid & Base. (2)
Q No.18) Name any two alkalis. Make a table to show indicator tests for acid & base. The indicators used are red & blue litmus, methyl orange and phenolphthalein. (1+4)
Biology
Q No.19) Define National Park. Name any two national parks of Nepal. (2)
Q No.20) Define cross pollination. Give an example of complete and incomplete flower each. (1+1)
Q No.21) Classify the pine with one major characteristic. ( 2)
Q No.22) Write two differences between pollination and fertilization. ( 2)
Q No.23) Draw a labeled diagram of mustard flower. (2)
Q No.24) Define hermaphrodite. Give two examples. (2)
Q No.25) Why are arthropods found abundant in environment? (2)
Q No.26) Write two differences between silverfish and starfish. Write the name of phylum of liver fluke and Unio with one major character. (2+3)
Geology & Astronomy
Q No. 27) Classify the following rocks. (2)
a. Obsidian c. Limestone
b. Slate d. Graphite
Q No. 28) Plutonic rocks are hard in nature, why? Write one example of such rock. (1.5+0.5)
Q No. 29) Which layer of atmosphere is also called protective shield? Why?
(0.5+1.5)
Q No.30) Write two differences between exosphere and stratosphere. Draw a neat labeled diagram of different layers of atmosphere. (2+3)
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