What are benefit that enjoyed by co's and not available to o

The reason is that in case of propritership, his liability is unlimited whereas in pvt, ltd companies it is limited to the extent of his capital contribution. in former case his personal properties will be at the stake in case of business liabilities. hence pvt. cos. are prefered.

Also to add further on above, Companies are seen with much reputation and trust in the eyes of public as they are always on the watchlist of strict regulatory bodies like ROC, IT Deptt., MCA, etc. Therefore people will always find it more comfortable to do business with companies as they considered  more reliable.

Since company is contemplated as a separate legal entity from its owner hence it can enjoy full rights what an individual does ie. acquire n hold property in its name, sue n be sued in its own name, etc.

if one wants to grow big and expands his business across borders than Company is the ideal form of business. For small business house proprietership is preferable.

thanks to all for your valuable comments. it gives me lots of relaxation