Basic Level Examination Preparation, Day: 03
Question paper for 8th grader students of Suryodaya
Science and Environment
Class: 8 Full marks: 75
Time: 2 hrs. 15 min. Pass marks: 30
Group A (Physics)
1. a) What is mass? Write two differences between fundamental and derived units.
b) What will be the final velocity of vehicle, if it started from rest and accelerates at 4m/s² after 5 second?
2. a) Define: i) Mechanical advantage ii) velocity ratio iii) efficiency
b) Prove that, liquid pressure (P)=hdg.
3. a) Define work and power, write the relationship between them.
b) Write any two differences between clinical and simple thermometer.
4. a) What is refraction of light? Which type of mirror is used as side mirror in vehicles and why?
b) what is unit of frequency? Write any two differences between echo and reverberation.
5. a) Draw the diagram to show the arrangement of molecular magnet in magnet and magnetic substance.
b) Why we use dry cell in torch light? Write any three reasons.
Group B (Chemistry)
6. a) Write the molecular formula of salt. Write the word equation of following chemical equation.
Hydrogen + Oxygen ➡️ Water
b) Draw the electronic configuration of Magnesium atom.
7. a) What is chromatography? Which type of mixture is separated from it?
b) Write any one use of sulphur and copper each.
8. a) What effect do acid, base and salt have on different indicators? Show in table.
b) How can you detect hardness of water collected from different sources?
Group C (Biology)
9. a) Draw a labelled diagram of virus.
b) Why does modification of root occur? Write any two causes or uses.
10. a) Write the relationship between cells, tissue and organs in human body.
b) Write the name of tissue found in animals.
11. a) What do you mean by vegetative propagation? Write the name of two plants which is reproduced from this process.
b) What is photosynthesis? How can you demonstrate that plants prepares their food on its leaves? Write with an experiment.
Group D (Astronomy and Geology)
12. a) What is soil erosion? Which region of Nepal does rain fall more? Why?
b) What is phases of moon? Write any three reasons for the existence of living being on earth.
Group E (Environmental Science)
13. a) What can human being get from nature? Write any three with examples.
b) Write the difference between national park and wild life reserve.
14. a) Write any four reasons of water pollution. Give any one measure that mitigates for minimizing water pollution in your region.
b) What is climate change? Write two effects of climate change.
15. a) What is biodiversity? Write its types.
b) What can you do in your residencial area for protection of Environment? Write any four points.