I want to sell a stock of the company XYZ. Its market price is 300rs. I want to sell the stock for 305rs. Is that possible? How might I do that?
You can ask for 305rs, but as long as shares are available at lower prices you won't sell. Only when your ask becomes the lowest available price will someone buy from you.
See many past questions about how buyers and sellers are matched by the market.
The core issue is to understand what 'selling a share' means. There is no special person or company that takes the share from you; you are selling on the open market.
So your question is effectively 'can I find a guy on the street that buys a 10$-bill for 11$ ?' - Well, maybe someone is dumb enough, but chances are slim.
You could write a covered call and the stock gets called away at the price + premium.
You could convince someone to buy it regardless of the market price.
Yes, you can but some conditions apply. You can sell shares a higher price than the market price using Company's Buyback offer. Generally, all the companies set Buyback Price above the Market value of the shares. But if you have shares of those companies at the record date.