Reactions Question
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Three beakers labelled as A, B and C each containing 25 ml of water were taken. A small amount of NaOH, anhydrous CuSO4 and NaCl were added to the beakers A, B and C respectively. It was observed that there was an increase in the temperature of the solution contained in beakers A and B, whereas in case of beaker C, the temperature of the solution falls. Which one of the following statement(s) is (are) correct?
(I) In beakers A and B, exothermic process has occurred.
(II) In beakers A and B, endothermic process has occurred.
(III) In beaker C exothermic process has occurred.
(IV) In beaker C endothermic process has occurred.
(I) In beakers A and B, exothermic process has occurred.
(II) In beakers A and B, endothermic process has occurred.
(III) In beaker C exothermic process has occurred.
(IV) In beaker C endothermic process has occurred.
- I only
- II only
- I and IV
- II, III, and IV