Eugenics is the study of___________________?

A. Altering human beings by changing their genetic components
B. People of european region
C. Different races of mankind
D. Genetic of plants

The position of earth in its orbit, when it is at its greatest distance from the sun causing northern summer is called ___________?

A. Aphelion
B. Perihelion
C. Perigee
D. Apogee

Diamond is a very expensive ornament. It is composed of a single element ___________?

A. Carbon
B. Gold
C. Silver
D. Platinum

Which of the following layers make 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 moon
B. Orbit of moon around earth
C. Direction of rotation of earth around 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. Photo diode

Where do most of 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. 2
B. 3
C. 0
D. 4

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

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