What is the system International (SI) unit of pressure?
A. N/m^-2
B. Nm^-2
C. Nm^2
D. All of the above
Total area of the earth is ________ .
A. 509,600,000 Sq. Km
B. 492,102,000 Sq. Km
C. 345,999,000 Sq. Km
D. 692,192,000 Sq. Km
Tendency of a metal to lose Electron is called:
A. Electronegativity
B. Electropositivity
C. Electroplating
D. Electrolysis