The pH scale is used to measure the acidity of a fluid. The pH scale ranges from 0 to 14. A pH of 7 is neutral, whereas a pH result below 7 is acidic and above 7 is alkaline. Urine has the widest ...

GATE Physics Question Paper PDF: Every aspirant who is going to sit in the Graduate Aptitude Test in Engineering (GATE) Physics (PH) exam 2026 must practice the GATE Physics previous year question ...

Indira Gandhi National Open University has released IGNOU Ph.D Entrance Test 2024 answer key & question paper. Candidates who have appeared for the Ph.D. Entrance Test can download the answer key ...

Saliva that is properly pH balanced (6.2 to 7.6) helps maintain a healthy mouth and protect your teeth. The acronym pH stands for potential hydrogen. It’s used to describe the chemical acidity level ...