Statement I: Spraying of water causes cooling.
Statement II: For an isolated system, surface energy increase on the expense of internal energy.
A. Statement I is true, statement II is true and Statement II is a correct explanation for Statement I.
B. Statement I is true, Statement II is true and Statement II is NOT the correct explanation for Statement I.
C. Statement I is true, Statement II is false.
D. Statement I is false, Statement II is true.
Statement II: For an isolated system, surface energy increase on the expense of internal energy.
A. Statement I is true, statement II is true and Statement II is a correct explanation for Statement I.
B. Statement I is true, Statement II is true and Statement II is NOT the correct explanation for Statement I.
C. Statement I is true, Statement II is false.
D. Statement I is false, Statement II is true.
Correct Answer – A
On spraying, surface area increases and hence surface energy, this increase in surface energy is on the expense of decrease in internal energy and hence temperature decreases.