kilohertz (kHz) is a unit which measures
(A) Power used by a current of one ampere
(B) Electromagnetic radio wave frequencies
(C) Voltage
(D) Electric resistance
Which of the following does not pollute the air
(A) Nitrogen Dioxide
(B) Sulfur dioxide
(C) Carbon dioxide
(D) none of these
Scientist discovered a previously undetected feature of the human Anatomy that could be the largest organ of human body
(A) Brass
(B) Pectora
(C) Interstitium
(D) Otic
The main culprit of greenhouse effect is Carbon dioxide But which is the second element contributing most to greenhouse effect
(A) Nitrogen Dioxide (NO2)
(B) Chlorofluorocarbons (CFCs)
(C) Methane (CH4)
(D) High-fructose corn syrup (HFCs)