Where can we find Methanoic Acid in nature?

Which among the following is the chief natural source of Tartaric acid?

When the pH of the litmus solution is neutral, it turns

What is the pH value of acid rain?

Which of the following contains Citric acid?

Oxalic acid is found in ___

Lemon fruit is a rich source of

The nature of calcium phosphate is present in tooth enamel is

pH value less than 7 indicates that the solution is

Which of the following is a natural indicator?