Thermodynamically the most stable form of carbon is
diamond
graphite
fullerenes
coal
Which is correct for an endothermic reaction?
ΔH is positive
ΔH is negative
ΔE is negative
ΔH = zero
Which of the following is always negative for exothermic reaction?
ΔH
ΔS
ΔG
None of these
Which of the given properties depends on the manner in which a change is brought about? i. ΔE ii. q iii.w
ΔE only
q and ΔE
q and w
w only
For an endothermic reaction, energy of activation is Ea and enthalpy of the reaction is ΔH (both of these in KJ/mol). Minimum value of Ea will be
equal to zero
less than ΔH
equal to ΔH
more than ΔH
Which of the following is an intensive property?
Temperature
Viscosity
Surface tension
All of these
If W is the amount of work done by the system and q is the amount of heat supplied to the system, identify the type of the system
isolated system
closed system
open system
system with thermally conducting walls
Which equation is correct for adiabatic process?
Q = + W
ΔQ = 0
ΔE= Q
p + Δ V = 0
Which of the following is a path function?
Internal energy
Enthalpy
Work
Entropy
Which of the following is not an endothermic reaction?
Dehydrogenation
Ethane to ethene
Combustion of propane
Change of chlorine molecule into chlorine atoms
