In chemistry this is done according to physical ... This is measured using the pH scale, which runs from pH 0 to pH 14. Universal indicator has many different colour changes, from red for strongly ...

A 34-year study by IMD and IITM reveals a concerning trend of increasingly acidic rainfall in India, particularly in ...

Indicators are substances that change colour when they are added to acidic or alkaline solutions. Universal indicator is the indicator most commonly used in the laboratory. If universal indicator ...

Though true "acid rain" is not yet a major threat, scientists associated with the study - conducted by IMD and Indian ...

A 34-year study reveals a concerning trend of increasing acidity in India's rainwater. Visakhapatnam, Prayagraj, and ...