Is Market Sell order is Executed Immediately?

at 11 am,

low- 200

high-200.05

In this condition I Place an Market sell order

which price Execute?

High and low has nothing to do with the price at which the market order gets executed at.

If you wish to sell at market, you will get the best ‘Buy’ price…and if you place a buy order at market, you will get the best ‘sell’ price.