Oxidation is a chemical reaction involving the _____.
A. Gain of Electrons
B. Loss of Electrons
C. Gain of Protons
D. Loss of Protons
GPS is an abbreviation for?
A. Global Poles System
B. Global PolySiliconium Store
C. Global Positioning System
D. Global Position Structure
In general, Comets have ______ orbits.
A. Elliptical
B. Highly elliptical
C. Circular
D. Parabolic
The planet that moves round the Sun at the highest speed is?
A. Jupiter
B. Venus
C. Mars
D. Mercury
In a very low temperature which from the following will freeze at last?
A. River water
B. Canal water
C. Sea water
D. Water in a lake
During winter in cold countries, the _____ is mixed to melt the ice on the icy roads.
A. Salt
B. Chlorine
C. Carbon dioxide
D. Water
The speed of light is ______.
A. 280,000 km/s
B. 300,000 km/s
C. 320,000 km/s
D. none of these
The fluid part of blood is known as ______.
A. plasma
B. platelets
C. White blood cells
D. Red blood cells
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