Everyday Science MCQs

5120 MCQs  (Page 13 of 512)

The most pure form of carbon among these are?
A. Anthracite
B. Lampblack
C. Graphite
D. None of these
GPS is an abbreviation for?
A. Global poles system
B. Global polysiliconium store
C. Global positioning system
D. Global position structure
Stars in the sky appear to twinkle due to _________?
A. A series of refractions
B. A series of reflections
C. A surface tension phenomenon
D. Multiple diminishing brightness