Sowmya Ji,
In your case you are required to pass Special Resolution for change in object clause of MOA and in case of Public company second Special Resolution for commence new business is also required to be passed however, in case of private company board resolution is sufficient to start a new business. File form 23 accordingly.
In your case also change of name is not required.
However, the additional business must not be inconsistent with the existing business. [Re:Bolsom Bros Ltd.]
The business may be wholly different but should be capable of being conveniently and advantageously continued with the existing business.[Industrial Cables (India Ltd. V Registrar of Companies (1973)] otherwise alteration may not be sanctioned for carrying on entirely new business. [Re: Bharat Mining Corporation Ltd].
The company which is not carrying any business cannot alter objects with the object of carrying on its business more economically or more efficiently.