Mostly which gases found of the planet Jupiter?
Mostly which gases found of the planet Jupiter?
A. Hydrogen
B. Chlorine
C. Hydrogen and Helium
D. Neon
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Phosphorus is an essential component of one of the following biological molecules:
Phosphorus is an essential component of one of the following biological molecules:
A. Amino acids
B. Nucleic acids
C. Carbohydrates
D. NoneVacuum tubes have been replaced by__________?
Vacuum tubes have been replaced by__________?
A. Conductors
B. Diodes
C. Transistors
D. None of thesekilohertz (kHz) is a unit which measures?
kilohertz (kHz) is a unit which measures?A. Power used by a current of one ampere
B. Electromagnetic radio wave frequencies
C. Voltage
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Who discovered the Gamma Rays?
A. Alfred Marshall
B. Paul Villard
C. Bohar
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The SI unit of electric current is?A. Coloumb
B. Ampere
C. Volt
D. WattThe number of spark plugs needed in a diesel engine is__________?
The number of spark plugs needed in a diesel engine is__________?
A. 2
B. 3
C. 0
D. 4
E. None of these