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The blueness of the sky is mainly due to _____________?
A. The scattering of sunlight by air molecules
B. The presence of water vapor
C. Absorption of blue light by the air
D. Emission of blue light by the atmosphere
Everyday Science Mcqs · Easy · 3 weeks ago
Phosphorus is an essential component of one of the following biological molecules:
A. Amino acids
B. Nucleic acids
C. Carbohydrates
D. None
Everyday Science Mcqs · Easy · 3 weeks ago
What would happen to the escape velocity if the mass of the Earth were doubled, keeping the radius the same?
A. It would remain the same
B. It would increase by a factor of 2sqrt{2}2
C. It would double
D. It would decrease by a factor of 2sqrt{2}2
Everyday Science Mcqs · Easy · 3 weeks ago
Which metal pollute the air of a big city?
A. Copper
B. Chromium
C. Lead
D. Cadmium
Everyday Science Mcqs · Easy · 3 weeks ago
Unit of surface tension in cgs system is?
A. Pascal
B. N/m
C. Dyn/cm
D. None of these
Everyday Science Mcqs · Easy · 3 weeks ago
SI unit of light is _________ ?
A. watt
B. Pascal
C. Candela
D. Joule
Everyday Science Mcqs · Easy · 3 weeks ago
Transistors do not need a warm up period because they have no ?
A. Plate
B. Grid
C. Filament
D. None of above
Everyday Science Mcqs · Easy · 3 weeks ago
The alloy of aluminium used for making magnet is_________?
A. Duralumin
B. Y-Alloy
C. Alnico
D. Aluminium bronze
Everyday Science Mcqs · Easy · 3 weeks ago
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