CSS Past Papers Everyday Science - 2005 Test - 6

CSS Past Papers
Everyday Science - 2005
Test - 6

1. Select the correct association?

a) Reduction - loss of a neutron
b) Oxidation - gain of an electron
c) Reduction - gain of a neutron
d) Oxidation-loss of an electron

2. Radioactive isotope of uranium used in nuclear bomb is?

a) 92 u 233
b) 92 u 235
c) 92 u 234
d) 92 u 238

3. Human population growth is greatest in developing countries because?

a) The death rate is high in developing countries.
b) The birth rate is high in developing countries
c) Most of the world's population lives in industrialized countries.
d) Much of the population has already reached the child bearing age.

4. Which woody raw material is used for the manufacture of paper pulp?

a) Rice straw
b) Bagasse
c) Poplar
d) Cotton

5. Rectified spirit contains alcohol about?

a) 80%
b) 95%
c) 85%
d) 70%

6. Which of the following elements is not present abundantly in earth's crust?

a) Carbon
b) Silicon
c) Aluminum
d) Radium

7. The famous book; al - qanoun was written by the muslim scientist?

a) Abu ali sina
b) Jabar bin hayyan
c) Zakariya al - razi
d) Abdul qasim majreeti

8. Basic metals can be converted into gold by?

a) Heating
b) Beating
c) Chemical reaction
d) Artificial nuclear radioactivity

9. One of the main function of the earth's ozone layer is to?

a) Absorb pollution
b) Prevent global warming
c) Filter out ultraviolet rays
d) All of the above

10. A light year is a unit of?
a) Mass
b) Length
c) Time
d) Energy

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