Question

Three beakers labelled as A, B and C each
containing 25 mL of water were taken. A
small amount of NaOH, anhydrous Cusa,
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 solutions contained in beakers A and B,
where as 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​

Answer 1

Answer:

A is correct because in beaker and b exothermic reaction takes place and it can be known when the temperature rises