What happens when grapes get fermented ?

When grapes are fermented, alcohol is produced.
Glucose from grapes  undergo fermentation, and reaction is given below:
C₆H₁₂O_{6  $\stackrel{yeast}{\to }$}  2C₂H₅OH + 2CO₂
Depending on the concentration of  the alcohols, various beverages are made.
Wine =  12-15% alcohol, it does not have CO₂.
(Red wine is made from red grapes while white wine is made  from white grapes)
Beer = 5-7%
Whisky = 40- 45 %