What is the purpose of opening a demat account?

The purpose of opening a demat account are as mentioned below:

To convert the physical securities into the electronic form,
To deposit and transfer the NEPSE listed securities in a dematerialized form ,
To credit the securities allotted through IPO and corporate actions (such as rights share
issue, bonus issue, merger, etc.) in a dematerialized form,
To receive the statement of the securities held in a demat account,
To pledge the securities held in a demat account,
To rematerialize the securities held in a demat account.