The correct option is D All of the above
pH value between 0−7 means the solution is acidic in nature. pH equal to 1 refers to a highly acidic solution.
pH value of 7 means a neutral solution. It means the solution is neither acidic nor basic.
pH value between 7−14 means the solution is basic or alkaline in nature. pH equal to 14 refers to a highly basic or alkaline solution.