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Science Question Set

By Anonymous
Attempt all the questions.
Group – A (Physics)
1.
a. Define 1 second and 1 solar day. 2
b. Why speed is called scalar quantity? How many meters does a bus take if it moves for an hour with the speed of 0.05km/s? 1+2=3
2.
a. Write the principles of simple machine. Steering of truck is larger than steering of car, why? 2+1=3
b. Why does a steel ball sink in water but float on mercury? 2
3.
a. What is one Joule work? Identify the type of energy at moving fan stretching the rubber. 1+1=2
b. The boiling temperature of water can’t be measured with the help of alcohol thermometer, why? Convert 100º C into ºF.
1+2=3
4.
a. Give reasons. 1.5×2=3
i. The base of dam is wider.
ii. The stars are seen twinkling in the clean night.
b. What is frequency? State the relation between time period (T) and frequency (F) of a wave. 2
5.
a. Two magnetic lines of force never intersect with each other, why? 2
b. What is polarization? Why does not polarization occur in dry cell? 1+1=2
Group – B Chemistry
6.
a. What is an atom? Normally, an atom is electrically neutral, why?
1+1=2
b. What is 2n2 rule? Why is helium called inert gas? 1+1=2
7.
a. What is mixture? Differentiate between homogeneous and heterogeneous mixture. 1+2=3
b. Write any 3 properties of metalloids. 3
8.
a. Define salt. “All bases are not alkali but all alkalis are base.” Justify this statement with example. 1+2=3
b. Distinguish two differences between soft and hard water. 2
Group – C Biology
9.
a. Differentiate between pollination and fertilization. 2
b. Write two importance of seeds. 2
10.
a. Write two tissues found in an animal. 2
b. What is system? Mention four body systems of human. 1+2=3
11.
a. Mention 3 importances of asexual reproduction. 3
b. What is blood vessel? Write two differences between artery and vein? 1+2=3
Group – D Astronomy and Geology
12.
a. Write any two characteristics of minerals. How does sea effect climate of its surrounding? 1+2=3
b. Why earth is suitable for living beings? Give 2 reasons. 2
Group – E Environment Science
13.
a. Name four medicinal herbs found in Nepal. 2
b. Write 3 importances of national park. 3
14.

a. Write two effects of noise pollution. 2
b. What is natural disaster? Write two preventive measures to be followed before earthquake. 1+2=3
15.
a. “Nepal is rich in biodiversity.” Justify this statement. 2
b. What is sustainable development? Why it is necessary? 1+1=2
---The End---

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