A. Increases
B. Decreases
C. Remains unchanged
D. Approach zero at 0°C
Related Mcqs:
- The heat capacity of a solid compound is calculated from the atomic heat capacities of its constituent elements with the help of the___________________?
A. Trouton’s rule
B. Kopp’s rule
C. Antoine equation
D. Kistyakowsky equation - “The heat capacity of a solid compound is approximately equal to the sum of the heat capacities of the constituent elements.” This is the statement of___________________?
A. Law of Petit and Dulong
B. Kopp’s rule
C. Nernst heat theorem
D. Trouton’s rule - At higher temperature, molal heat capacities of most of the gases (at constant pressure) ____________ with increase in temperature?
A. Increases
B. Decreases
C. Remains unchanged
D. Increases linearly - A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is__________________?
A. 13728 J
B. 19206 J
C. 4576 J
D. 12712 J - At higher temperatures, molal heat capacities for most of the gases (at constant pressure) _______________ with increase in temperature?
A. Varies linearly
B. Increases
C. Decreases
D. Does not vary - What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20) ?
A. AB3
B. A2B3
C. A2B
D. AB2 - ______________ equation gives the effect of temperature on heat of reaction ?
A. Kirchoff’s
B. Maxwell’s
C. Antoine
D. Kistyakowsky - For estimation of heat capacity of a solid compound, one can use________________?
A. Clapeyron’s equation
B. Gibb’s equation
C. Kopp’s rule
D. Trouton’s rule - Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of________________?
A. Mixing
B. Adsorption
C. Wetting
D. Complete wetting - Atomic ______________ of an element is a whole number?
A. Weight
B. Number
C. Volume
D. Radius
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