User talk:Dr sumit singh

June 2018
Hello, I'm Longhair. I wanted to let you know that one or more of your recent contributions to Friedel–Crafts reaction have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Help Desk. Thanks. Longhair\talk 05:45, 21 June 2018 (UTC)

Please refrain from making unconstructive edits to Wikipedia, as you did at Reproductive health. Your edits appear to constitute vandalism and have been reverted. If you would like to experiment, please use the sandbox. Repeated vandalism may result in the loss of editing privileges. Thank you. Longhair\talk 05:56, 21 June 2018 (UTC)