Which one of the following will turn red litmus blue? (a) Vinegar (b) Baking soda solution (c) Lemon juice (d) Soft drinks
The explanation for the correct option (B): Bases are the chemical substances that dissociate to produce Hydroxide ions (OH-) ions when dissolved in Water (H2O). Bases have a bitter taste. Bases turn red litmus blue. Baking soda (NaHCO3) is a base and its aqueous solution is basic in nature. Hence, it will turn red litmus blue.
