Intraday leverage is a common thing across all exchanges around the world. In the US also it is allowed, but it isn’t allowed to everyone. If you trade intraday for more than 5 times a week, you get classified as a pattern day trader, and only clients above a certain size in terms of account value can be a pattern day trader.
In India SEBI is now plugging in the loophole which allowed brokers to offer almost unlimited leverage if they wanted. Check this thread