Question

do we get calcium from eating chalk?​

Answer 1

Chalk (calcium carbonate) is generally considered to be non-toxic, but eating it is not advisable and it may result in the following problems: abdominal pain, nausea, vomiting, constipation, diarrhoea. The chalk from the dust may cause eye irritation, and isn't good for your lungs.

Answer 2

Answer:

not proved

but eating chalk can be dangerous.

as it's not confirmed whether chalk is edible or not.