Which two gases do you exhale more than you inhale?
A. Carbon and Nitrogen
B. Carbon and Oxygen
C. Hydrogen
D. Chlorine
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Physics Mcqs
Stainless steel is an alloy of?
A. Copper with zinc
B. Red bras and yellow brass
C. Zinc and nickel
D. Cormium and nickel
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Which of the following statements is correct?
A. The reading on a thermometer immersed in boiling water varies as the heat increases or decreases above the boiling point
B. When a gas under high pressure is permitted to expand into a region of low pressure, it gains temperature
C. Air escaping from a punctured tire feels cold
D. None of these statements is correct.
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An object weighs less at the equator than at the poles because:
A. the force of gravity is more at the equator than at the poles
B. the force of gravity is less at the equator than at the poles
C. the earth is almost flat at the equator
D. the equatorial radius of the Earth is less than the polar radius.
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