The main active constituent of tea and coffee is
...The main active constituent of tea and coffee is
nicotine
chlorophyll
caffeine
aspirin
Correct answer is C
No explanation has been provided for this answer.
The function of zinc electrode in a galvanic cells is that it ...
A metal M displaces zinc from ZnCl solution This shows that ...
The gas that can be collected by downward displacement of air is ...
Consider the structure above How many carbon atoms does the parent chain contain? ...
What volume of (dm3) of water will be added to 10dm3 of 2.0 mol/dm3 HCL acid solution...
Which statement is NOT true about the composition of starch? ...