CSS Past PapersBREveryday Science 2009BR Test - 4

CSS Past PapersBREveryday Science 2009BR Test - 4

1. Where do most of Asteroids lie?

a) Everywhere in the sky
b) In asteroid belt between the orbits of Mars and Jupiter
c) None of these
d) In asteroid belt between the orbits of Jupiter and Venus
e) In asteroid belt between the orbits of Mars and Venus

2. The number of spark plugs needed in a diesel engine is?

a) 3
b) 2
c) 0
d) 4
e) None of these

3. The half life of a radioactive element is 8-dayHow long it take to reduce it from 10 mg to 5 mg?

a) None of these
b) 16 days
c) 8 days
d) 12 days
e) 4 days

4. The term ‘Blue Shift’ is used to indicate?

a) Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the objec
b) Turning a star from white to blue
c) In future sun would become blue
d) None of these
e) Black hole was blue at its start

5. Kilowatt-hour is a unit of?

a) None of these
b) Time
c) Electric Current
d) Energy
e) Power

6. Fuel used in a Fast Breeder Reactor is?

a) Uranium thorium Oxide
b) None of these
c) Uranium Plutonium Oxide
d) Uranium Oxide
e) Uranium Plutonium carbide

7. Monsoon is caused by?

a) Movement of clouds
b) Rise in temperature
c) Seasonal reversal of winds
d) Rain forests
e) Revolution of earth

8. Which of the following atmospheric layers help in radio communication?

a) Exosphere
b) Ozone layer
c) Ionosphere
d) Troposphere
e) Stratosphere

9. A moderator is used in nuclear reactor in order to?

a) Decrease the number of electrons
b) Increase the number of elections
c) Accelerate the neutrons
d) Slow down the speed of the neutrons
e) None of these

10. Sedimentary rocks are?

a) Rough
b) Brittle
c) Hard
d) Volcanic

e) Porous

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