Three beakers labelled A, B and C each containing 25 mL of water were taken. A small amount of NaOH, anhydro CuSO4 and NaCl were added to the beakers A, B and C respectively. It was observed that there was an increase the temperature of the solution contained in the beakers A and B whereas in case of beaker C, the temperature of solution falls. Which of the following statements are correct?
(a) In beakers A and B exothermic process has occurred.
(b) In beaker C endothermic process has occurred.
(c) In beaker A, B and C both exothermic and endothermic process has occurred.
(d) (a) and (b) both
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Answer:
ans is option D
Explanation:
Because exothermic reaction produces heat where endothermic reaction absorbs heat
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