Question

Why does our tongue feels cool when we put some glucose on it

Answer 1

Answer:

due to presence of saliva. ..

Answer 2

Answer:

When glucose powder is eaten our touched to our tongue, our tongue feels because it absorbs the latent heat of vaporization from body and makes it cold in return.

The process takes energy from its surrounding and takes all the heat energy therefore, it can be called as endothermic reaction