General Science & Ability MCQs 2009

Which of the following layers makes radio transmission possible?
A) Troposphere
B) Ionosphere
C) Mesosphere
D) Stratosphere

Which of the following explains the reason why there is no total eclipse of the sun?
A) Size of the Earth in relation to that of the moon
B) Orbit of the moon around Earth
C) Direction of rotation of Earth around the sun
D) Area of the sun covered by the moon

Television signals are converted into light signals by:
A) Optical fiber
B) Transistor
C) Decoder
D) Photodiode

Where do most asteroids lie?
A) In asteroid belt between the orbits of Mars and Jupiter
B) In asteroid belt between the orbits of Mars and Venus
C) In asteroid belt between the orbits of Jupiter and Venus
D) Everywhere in the sky

The number of spark plugs needed in a diesel engine is:
A) 0
B) 1
C) 2
D) 4

The half-life of a radioactive element is 8 days. How long will it take to reduce it from 10 mg to 5 mg?
A) 4 days
B) 12 days
C) 16 days
D) 8 days

The term 'Blue Shift' is used to indicate:
A) Doppler effect in which an object appears bluer when moving towards the observer or observer is moving towards the object
B) Turning a star from white to blue
C) In future the sun would become blue
D) Black hole was blue at its start

Kilowatt-hour is a unit of:
A) Power
B) Electric current
C) Electrical energy
D) Time

Fuel used in a Fast Breeder Reactor is:
A) Uranium Oxide
B) Uranium Plutonium carbide
C) Uranium Plutonium Oxide
D) Uranium Thorium Oxide

Which of the following is most elastic?
A) Steel
B) Rubber
C) Glass
D) Sponge