A) Phenolphthalein pink
B) Methyl orange yellow
C) Methyl orange red
D) Blue litmus red
Correct Answer: C
Solution :
\[NaHC{{O}_{3}}\]in water is alkaline in nature due to hydrolysis of \[HCO_{3}^{-}\]ion. \[NaC{{O}_{3}}\]⇌ \[N{{a}^{+}}+HCO_{3}^{-}\]
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