Acids Bases and...

Excessive use of fertilizers makes the soil ______ so it should be treated with ______ like ________. If the soil is ____ then the organic matter should be added to it.

The difference in number of water molecules in gypsum and plaster of paris is 

Arrange the following in order of increasing $$pH$$?

The number of molecules of water of crystallization present in one molecule of ferrous sulfate is_______.

Which one of the following can be used as an acid base indicator by a visually impaired student?

Five students, Ankit, Nitin, Deepika, Gunjan and Pooja were given test tubes having solutions with pH 1.2, 13.5, 10.0, 7.4 and 2.2 respectively. The correct order of decreasing $$OH^-$$ ion concentration in these solutions is:

When marble chips are treated with $$HCl$$, which of the following gas is liberated?

The acid present in tea is:

Which property is common between vinegar and curd?

$$pH$$ of tomato juice is 4, that means it is: