what is pH paper exactly(full form)????

 pls note down the mistake-Concepto-litmus paper turns red in acids and blue in alkali.

thank you,

The concept of pH, as has been explained above, is the measure of acidity or alkalinity of a substance- basically, its hydrogen ion concentration. pH paper is used in experiments testing for the pH of particular substances. It's a kind of indicator paper which turns red in alkali and blue in acids. It's also called litmus paper.

full form of pH is potential of hydrogen.

Dear Student,

your friends have correctly answered the question.

Good Luck!

 potential of hydrogen

thanks!!!

Ans-: power of hydrpgen ion concentration. 

 IT MEANS "POTENTIAL OF HYDROGEN" OR " POWER OF HYDROGEN" 

pH is actual the ratio of Hydronium ions (H3O) to Hydroxide ions (OH). A pH neutral liquid has a pH of 7, while the strongest acids have a number closer to 1 and the strongest bases (like household bleach) have a pH number closer to 14.