The Temperature of the surface of Sun is_______?
The Temperature of the surface of Sun is_______?
A. 5,778 Kelvin
B. 6,778 Kelvin
C. 7,778 Kelvin
D. 9,778 Kelvin
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By which process copper is refined ____________?
By which process copper is refined ____________?
A. Roasting
B. Oxidation
C. Zone Refining
D. ElectrolysisThe side view mirrors of vehicles are of which type of mirrors?
The side view mirrors of vehicles are of which type of mirrors?A. Convex
B. Concave
C. Plane
D. InvertedWho invented the first battery?
Who invented the first battery?A. Alessandro volta
B. Tim Berner
C. Rob Stothard
D. Georges LeclancheDinosaurs and many other species were extinct about ________ years ago.
Dinosaurs and many other species were extinct about ________ years ago.A. 55 million
B. 66 million
C. 75 million
D. 85 millionMax plank is famous for his discovery of?
Max plank is famous for his discovery of?A. Energy quanta
B. photon
C. both of these
D. None of theseWhich metal known as quick silver ?
Which metal known as quick silver ?A. Mercury
B. Sulphuric acid
C. Chromite
D. Quartz