Question

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. *

1 point

(a) (i) only

(b) (ii) only

(c) (i) and (iv)

(d) (iv), (ii) and (iii)

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Answer 1

Answer:

the option A is the correct answer

Answer 2

Answer:

(a) (I) only

option is correct

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