Which element has the most % in human body?

A. Oxygen 65%
B. Calcium 75%
C. Hydrogen 10%
D. Carbon 18%

Which element has the second most % in human body?

A. Oxygen 65%
B. Calcium 75%
C. Hydrogen 10%
D. Carbon 18%

Which element has the third most % in human body?

A. Oxygen 65%
B. Calcium 75%
C. Hydrogen 10%
D. Carbon 18%

What measurement scale is used to determine wind speed?

A. Richter scale
B. Beaufort scale
C. Meter-second scale
D. None of these

Metal are highly ___________ ?

A. Electropositive
B. Electronegativity
C. Both of these
D. Neutral

The Summer solstice in the Northern Hemisphere happens on: __________?

A. 21 july
B. 22 december
C. 22 march
D. 21 june

The winter solstice in the southern Hemisphere occurs on __________?

A. 22 december
B. 23 september
C. 21 june
D. 22 march

Which planet of our solar system is name after a female?

A. Uranus
B. Saturn
C. Venus
D. Mercury

The second largest moon “titan” is belongs to which planet?

A. Uranus
B. Venus
C. Saturn
D. Mercury

Activity of Brain is recorded by ____________?

A. Ecg (electrocardiogram)
B. Eeg (electroencephalogram)
C. X-ray
D. None of these