Arrange the given list of acids and bases in ascending order of their pH.
Water, Sodium hydroxide, Vinegar, Gastric juices

Gastric juices < Vinegar < Water < Sodium hydroxide

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Vinegar < Water < Gastric juices < Sodium hydroxide

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Vinegar < Sodium hydroxide < Water < Gastric juices

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Vinegar < Gastric juices < Water < Sodium hydroxide

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Solution

The correct option is A Gastric juices < Vinegar < Water < Sodium hydroxide
pH value of a substance tells us how much acidic or alkaline a given substance is. The approximate pH value of the given substances is mentioned in the table below.
$\begin{matrix} Substance & pH Gastric juices & 1 Vinegar & 3 Water & 7 Sodium hydroxide & 14 \end{matrix}$
Hence, the ascending order of these substances with respect to their pH is Gastric juices < Vinegar < Water < Sodium hydroxide.

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