x
Support us!

If you like this site please help and make click on any of these buttons!

General Knowledge on Chemistry

(Click on suggested Options to select the answer | Color Red means : Wrong & Green Means: Correct)
241. The main active constituent of tea and coffee is

Check More Pages...

Exercise

More GK Questions

ENTER YOUR DETAILS!!
Please to get more information
Please enter Roll NO
By clicking on Submit button, you agree to our terms of use