Yes, to use limit order like a market order simply place:

1. A buy order with limit price much higher than the Last Traded Price (LTP) or
2. A sell order with limit price much lower than LTP


In such scenarios, the limit order will automatically execute like a market order since you have now instructed to fill the order at any price up to your specified limit. The limit price will ensure that your order would not get executed beyond this price by acting like a protection.