What if Amazon takes over Flipkart? India’s antitrust watchdog starts study

India’s antitrust watchdog is assessing the domestic e-commerce sector, a step that could have consequences for Amazon.com Inc. and Walmart Inc.’s Flipkart, which dominate online sales in the country.

In a questionnaire dated May 17, the Competition Commission of India says it is seeking to understand the evolution of the e-commerce industry, the sector’s methods and strategies, business practices and “implications for competition,” according to a copy reviewed by The Wall Street Journal. Ernst & Young is conducting the study, according to the 14-page document, which is marked confidential.

The questions cover the percentage of products sold by categories, inventory practices, how pricing decisions are made and total sales volume, among other subjects.