The ingredients used to make tea are water, tea leaves, milk and sugar. Among these, milk and sugar dissolve in water.
Some ways in which the mishri pieces can be dissolves quickly are
crush them and then dissolve them by stirring continuously
heat the water while continuously stirring in the pieces of mishri
Disclaimer: This question aims to make the students familiar with the things they come across in their daily lives. Keeping this process in mind, a sample answer has been provided and the answers of the students can vary from this answer.