Questions

Blotting paper absorbs ink by the process of capillary action. The capillary action is based on the property of surface tension of liquid.

All unsized paper will absorb water. Blotting paper is not sized and made bulkier to provide capillary action for faster absorption of liquid.

Blotting paper has also been sold as a cosmetic to aid in the removal of skin oils and makeup.

To get into hot waters means to get into trouble. Example: The young boy got into hot water with his parents when he had a fight at school.

Functional testing is a type of testing that is done against the requirements of the business application. 

Examples of functional testing are Smoke testing, Sanity testing, Regression testing, Usability testing.