Acids Bases and...

'Litmus', a natural dye is an extract of which of the following?

When the soil is too basic, plants do not grow well in it. To improve its quality what must be added to the soil?

Neutralisation reaction is a 

On adding phenolphthalein indicator to a colourless solution, no change is observed. What is the nature of this solution?

Acid present in tamarind is:

Aqueous solution of a base 

Acids change blue litmus to?

Aqueous solution of a base 

The compound used for neutralisation of excess $$HCl$$ in the stomach is:

The nature of solution which turns blue litmus paper red is ......... .