How many companies are included in BSE-GREENEX?

The correct answer is A) 25. BSE GREENEX is a thematic index launched by the Bombay Stock Exchange in 2012. It tracks 25 companies whose businesses are environment-friendly, such as renewable energy, clean technology, and resource-efficient manufacturing. It is a market-capitalisation weighted index, so it works like the Sensex, but for green businesses.

Why the others are wrong:

• B) 40 and D) 100 have no link to GREENEX. BSE 100 is a separate broad-market index, and 100 is not the GREENEX count.
• C) 50 is the number of stocks in Nifty 50 at NSE, not in any BSE green index.

The core concept is sustainable or green investing. This connects to Mains GS-III on green growth and climate finance, and to SEBI's Business Responsibility and Sustainability Reporting (BRSR) framework, which pushes listed firms to disclose their environmental performance.

Trap: Aspirants mix up GREENEX with BSE CARBONEX, which is a separate carbon-focused index with a different count. Check the index name and its theme before you pick a number.