RRB Group D 19-Sep-2018 Shift 1 Solved Paper

Question : 69 of 100

Marks: +1, -0

As the

{\pH}

value increases from 7 to 14, it represents:

no change in the ${H}^{+}$ ion concentration
an increase in the ${OH}^{-}$ ion concentration
an increase in the ${H}^{+}$ ion concentration
a decrease in the ${OH}^{-}$ ion concentration

Validate

Solution:

As the

{pH}

value increases from 7 to

14,

it represents an increase in the

{OH}^{-}

ion concentration. A pH value is a number from 1 to

14,

with 7 as the middle (neutral) point. Values below 7 indicate acidity which increases as number decreases, 1 being the most acidic. Values above 7 indicate alkalinity which increases as number increases, 14 being the most alkaline.

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