While studying the saponification reaction, what do you observe when you mix an equal amount of colourless vegetable oil and 20% aqueous solution of $N a O H$ in a beaker?

The colour of the mixture has become dark brown

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A brisk effervescence is taking place in the beaker

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The outer surface of the beaker has become hot

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The outer surface of the beaker has become cold

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Solution

The correct option is C The outer surface of the beaker has become hot
While studying the saponification reaction the outer surface of the beaker becomes hot as the saponification reaction is exothermic in nature.

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Similar questions

Q. While studying the saponification reaction, what do you observe when you mix an equal amount of colourless veegetable 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.

Q. You mix two colourless solutions and the resulting mixture becomes cloudy. What type of reaction is observed?

Q. When you add a few drops of acetic acid to a testube containing sodium bicarbonate powder, which one of the following is your observation?
(a) No reaction takes place.
(b) A colourless gas with pungent smell is released with brisk effervescence.
(c) A brown coloured gas is released with brisk effervescence.
(d) Formation of bubbles of a colourless and odourless gas.

A student prepared 20% sodium hydroxide solution in a beaker to study saponification reaction. Some observations related to this are given below:

(I) Sodium hydroxide solution turns red litmus blue
(II) Sodium hydroxide readily dissolves in water
(III) The beaker containing solution appears cold when touched from outside
(IV) The blue litmus paper turns red when dipped into the solution

The correct observations are :

Q. When ammonium chloride is mixed with barium hydroxide in a beaker, it becomes cold.

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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?

The correct option is C The outer surface of the beaker has become hotWhile studying the saponification reaction the outer surface of the beaker becomes hot as the saponification reaction is exothermic in nature.

While studying the saponification reaction, what do you observe when you mix an equal amount of colourless vegetable oil and 20% aqueous solution of $N a O H$ in a beaker?

The correct option is C The outer surface of the beaker has become hot
While studying the saponification reaction the outer surface of the beaker becomes hot as the saponification reaction is exothermic in nature.