2) basic Janaki..

 India ke दो स्टॉक एक्सचेंज है

 NSE and BSE

स्टॉक exchange मतलब जहां share kaaride और बेचे जाते हैं

NSE: नेशनल स्टॉक एक्सचेंज'। 

सुचक आंक: nifty

BSE: बॉम्बे स्टॉक एक्सचेंज

सूचक आंक : sensex

Time

1 Normal timing

9.15am to 3.30pm-  buy and sell

2 pre opening time

9 to 9.15 Am

Section 1: From 09:00 AM to 09:08 AM

During these 8 minutes, you can place orders to buy or sell different shares in the stock market. In addition to that, you can also modify or cancel any orders that you may have placed. When the normal trading session begins at 09:15 AM, the orders placed during this section of the pre-opening session get preference in the queue of orders.

Section 2: From 09:08 AM to 09:12 AM

During these 4 minutes, you cannot place any new orders, modify existing ones, or cancel any order. This section is necessary so that price matching can be performed. Price matching involves comparing demand and supply. It helps determine the final prices at which different shares will be traded when the market opens at 09:15 AM.

Section 3: From 09:12 AM to 09:15 AM

This 3-minute window of time is like a connection section between the pre-opening session and the normal trading hours. It behaves like a buffer to ease the transition into the regular trading session. Again, during these 3 minutes as well, you cannot place, modify, or cancel any orders.

(9 to 9.12 Tak modif kar sakte ho)

https://youtube.com/playlist?list=PLFQ0hRWyH11RS4KUPadj6aoC2KtEHVIfN