When is 'how much' used? And when is 'How many' used?

Dear student,

The basic difference between the usage of 'How much' and 'How many' is as follows:

How much - it is used to enquire about uncountable nouns.
Example: How much milk do you want?
How much strength do you have?

How many - it is used to enquire about countable nouns.
Example: How many apples did you buy?
How many sample papers have you solved?

Regards