AFCAT Chemistry
Thermodynamics — Quiz
20 Questions · No Negative Marking
Question 1
Which of the following is the first law of thermodynamics?
AEntropy of the universe always increases in spontaneous processes
BEnergy cannot be created or destroyed; total energy of an isolated system is constant
CHeat flows spontaneously only from hot bodies to cold bodies
DThe absolute zero of temperature (0 K) can never be physically reached
Question 2
An exothermic reaction is one in which:
AHeat is absorbed from the surroundings (ΔH > 0)
BHeat is released to the surroundings (ΔH < 0)
CNo heat exchange occurs (ΔH = 0)
DThe temperature of the system remains constant
Question 3
Le Chatelier's principle states that when a system at equilibrium is subjected to a change, it:
AReaches a new equilibrium by moving in the direction that counteracts the imposed change
BAlways moves in the direction of increasing temperature
CShifts in the direction that maximises product formation
DMaintains the same equilibrium concentrations regardless of external changes
🔒
Unlock the Full Quiz
Get all 20 questions with answer options, instant scoring, and detailed explanations for every question — plus full access to all chapters, PDFs, and mock tests.
Unlock Full Access →
← Back