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Question

Arrange the following substances in the increasing order of their pH values.
Bleach, Water, Apple juice, Car battery acid, Baking soda

A
Car battery acid < Apple juice < Water < Baking soda < Bleach
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B
Bleach < Baking soda < Water < Apple juice < Car battery acid
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C
Car battery acid < Baking soda < Apple juice < Water Bleach
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D
Bleach < Water < Apple juice < Baking soda < Car battery acid
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Solution

The correct option is A Car battery acid < Apple juice < Water < Baking soda < Bleach
The order of pH values is-
Strong acids < Weak acids < Neutral substances (pH 7) < Weak bases < Strong bases

1. Car battery acid contains hydrochloric acid which is a strong acid
2. Apple juice contains malic acid which is a weak acid.
3. Water is neutral
4. Baking soda contains sodium bicarbonate which is a weak base
5. Bleach contains sodium hydroxide which is a strong base

Hence, the correct order of pH is
Car battery acid < Apple juice < Water < Baking soda < Bleach

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