Question

Three beakers labelled as a b and c each containing 25 ml of water were takena small amount of sodium hydroxide and anhydrous copper sulphate and sodium chloride were added to beaker A B and C respectively it was observed that there was an increase in the temperature of the solution contained in beaker A and B whereas in case of C the temperature of solution falls. Which one of the statement is correct
I. In beaker A and B, exothermic process had occurred.
II. In beaker A and B, endothermic process had occured.
III. In beaker C, exothermic process had occured.
IV. In beaker C, endothermic process had occured.

Answer 1

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I think The correct option is ....(D)

In beaker C.. Endothermic process will occur.....

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Answer 2

☸ Required Answer is ⇩⇩⇩⇩

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Correct Option➡(C)

✔Chemical reaction in beakers A and B gives out heat.

✔Hence the temperature of the solution increases.

✔Thus, we can call it an exothermic reaction.

✔ In beaker C, heat is absorbed from water instead and hence the temperature decreases.

✔Thus, we can call it an endothermic process.

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