Everyday Science Mcqs

A moderator is used in nuclear reactor in order to ?

A. Accelerate the neutrons
B. Slow down the speed of the neutrons
C. Increase the number of elections
D. Decrease the number of electrons
E. None of these

Which of the following atmospheric layers help in radio communication?

A. Exosphere
B. Ionosphere
C. Troposphere
D. Stratosphere
E. Ozone layer

Monsoon is caused by____________________?

A. Seasonal reversal of winds
B. Revolution of earth
C. Movement of clouds
D. Rise in temperature
E. Rain forests

Fuel used in a Fast Breeder Reactor is _____________?

A. Uranium Oxide
B. Uranium Plutonium carbide
C. Uranium Plutonium Oxide
D. Uranium thorium Oxide
E. None of these

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 object.
B. Turning a star from white to blue
C. In future sun would become blue
D. Black hole was blue at its start
E. None of these

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

A. 4 days
B. 12 days
C. 16 days
D. 8 days
E. None of these

The number of spark plugs needed in a diesel engine is__________?

A. 2
B. 3
C. 0
D. 4
E. None of these

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
E. None of these

Television signals are converted into light signals by___________?

A. Optical fiber
B. Transistor
C. Decoder
D. Photo diode
E. None of these