Pumping of water uphill is_______________?
Correct answer: B. non-spontaneous process
- A. spontaneous process
- B. non-spontaneous process
- C. irreversible process
- D. reversible process
Explanation
Water does not move uphill by itself because increasing gravitational potential energy requires energy supplied from outside, so pumping is a non-spontaneous process. Students may choose irreversible because a pump usually involves losses, but non-spontaneous refers to the need for external energy, whereas irreversibility concerns whether the process can be exactly reversed.
Last updated
About System, Surroundings and State Functions
A system is the part of the universe under study, while everything outside it is the surroundings; the boundary separates them. State functions such as pressure, temperature, volume, internal energy and enthalpy depend only on the state, unlike heat and work, which depend on the path taken.
Practise Thermochemistry and Energetics of Chemical Reactions
728 free Thermochemistry and Energetics of Chemical Reactions MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.