Step 1: Understand the concept of share certificates.
Shares can be held in two forms:
Physical form: Paper certificates issued by the company.
Electronic/Demat form: Shares held in electronic accounts with depository participants.
Step 2: Define the key terms.
Dematerialization: The process of converting physical share certificates into electronic form (Demat form). It is commonly referred to as "Demat".
Rematerialisation: The reverse process of converting electronic shares back into physical certificates.
Demutualization: The process of converting a mutual organization (such as a stock exchange owned by members) into a company owned by shareholders.
Depositary: An institution that holds securities in electronic form (for example, NSDL and CDSL in India).
Step 3: Analysis of each option.
(A) Rematerialisation: Incorrect. This is the opposite process—converting electronic shares into physical form.
(B) Dematerialization: Correct. This is the process of converting physical share certificates into electronic form.
(C) Demutualization: Incorrect. This relates to the organizational structure of stock exchanges, not share conversion.
(D) Depositary: Incorrect. A depositary is the institution that holds electronic shares, not the process of conversion.
Step 4: Conclusion.
Dematerialization eliminates physical share certificates and creates corresponding electronic entries in a depository system.
Final Answer: (B) Dematerialization