What is an endothermic reaction?
A. Reaction in which heat is released
B. Reaction in which heat is absorbed
C. Reaction in which neither heat is released nor absorbed
D. None of the above
Answer: Option B
A. Reaction in which heat is released
B. Reaction in which heat is absorbed
C. Reaction in which neither heat is released nor absorbed
D. None of the above
Answer: Option B
A. physical change
B. reduction reaction
C. endothermic reaction
D. exothermic reaction
Which law of the thermochemistry introduces the concept of entropy?
A. Second Law
B. Zeroth Law
C. Third Law
D. First Law
Which of the following is a closed system?
A. Jet engine
B. Tea placed in steel kettle
C. Pressure cooker
D. Rocket engine during propulsion
The entropy of perfectly crystalline solid at absolute zero is
A. positive
B. negative
C. Zero
D. not definite
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