Balloons are filled with _________ ?
Balloons are filled with _________ ?
A. Nitrogen
B. Helium
C. Oxygen
D. Argon
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The electronic device which is used as a switch or amplifier is called ?
The electronic device which is used as a switch or amplifier is called ?A. Diode
B. Resistor
C. Transistor
D. TransformerWhich element is called earth maker?
Which element is called earth maker?A. Oxygen
B. Silicon
C. Carbon
D. HydrogenDuring winter in cold countries, the __________ is mixed to melt the ice on the icy roads.
During winter in cold countries, the __________ is mixed to melt the ice on the icy roads.A. Salt
B. Chlorine
C. Carbon dioxide
D. WaterWhich of the following vitamin is known as Biotin?
Which of the following vitamin is known as Biotin?A. vitamin B-3
B. vitamin B-4
C. vitamin B-5
D. vitamin B-7Study of energy production in living bodies is called_________?
Study of energy production in living bodies is called_________?A. Biology
B. Biomechanics
C. Bioenergetics
D. AerodynamicsOur sun is classified as ?
Our sun is classified as ?A. A blue giant
B. Yellow draft
C. Supernova
D. None of above