Hailey’s comet is seen after every——— Year?
A. 84 years
B. 76 years
C. 1000 years
D. 365 years
Lactometer is used for?
A. Ship
B. Milk
C. Honey
D. None
X-rays were discovered by?
A. Wilhelm Conrad Roentgen
B. Thomson
C. Ernest Rutherford
D. Becquerel
Earth’s gravitational attraction at the lunar surface, is…?
A. 1/3
B. 1/4
C. 1/5
D. 1/6
The study of pathology is known as ?
A. Ethics
B. Disease
C. Future
D. Cancer
What metal has a liquid state at ambient temperature?
A. Zinc
B. Nickel
C. Lead
D. Mercury
What is/are the strongest component(s) of a magnet?
A. North pole
B. South pole
C. North and south pole
D. Median of north and south pole
In roughly __ million years, the sun will orbit the Milky Way
A. 225
B. 230
C. 245
D. 250
Which of the following rays penetrates the earth more?
A. Beta rays
B. Alpha rays
C. Gamma rays
D. X-rays
Which element does a nuclear reactor employ as a moderator?
A. Light water
B. Dense water
C. Fresh water
D. Heavy water