CBSE Class 10 Science 2017 · Paper 31/1 · Question 26
While studying the saponification reaction, what do you observe when you mix an equal amount of colourless vegetable oil and 20% aqueous solution of NaOH in a beaker ?
- (a)The colour of the mixture has become dark brown
- (b)A brisk effervescence is taking place in the beaker
- (c)The outer surface of the beaker has become hot
- (d)The outer surface of the beaker has become cold
Answer
(c) The outer surface of the beaker has become hot
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