Question

Soft drinks contains:
$A)$Acetic acid
$B)$Tartaric acid
$C)$Carbonic acid
$D)$Nitric acid

Answer 1

Hint: Carbonated beverages contain an acidic molecule called carbonic acid that decomposes. When the bottle is opened, the pressure decreases and the carbonic acid changes into carbon dioxide and water. The decomposition of carbonic acid produces the characteristic soda fizzy.

Complete answer:
Most soft drinks contain one or more of three common acids citric acid, carbonic acid and phosphoric acid. Soft drinks with specific flavor ingredients may also contain other less common acids. The level of acidity in sodas can be quite high, and many dentists deplore its long term effect on your teeth.
The three most common acids in soft drinks are citric, carbonic and phosphoric acids. Carbonic acid forms from dissolved carbon dioxide, which is present in almost all soft drinks.
Carbonic acid is added to soft drinks to make it fizzy. When the bottle is opened, the pressure decreases and the carbonic acid changes into carbon dioxide and water making it fizzy.
So, the correct answer is $C)$ Carbonic acid.

Additional information:
Soft drinks are called soft in contrast with hard alcoholic drinks. Small amounts of alcohol may be present in a soft drink, but the alcohol content must be less than $0.5\% $ of the total volume of the drink in many countries and localities. If the drink is to be considered non-alcoholic. Fruit punch, tea, and other such non-alcoholic drinks are technically soft drinks by this definition, but are not generally referred to as such.

Note:
Excessive intake of soft drinks with high sugar and acid content both regular and diet could cause detrimental impacts on dental and general health including dental caries, dental erosion, overweight, obesity and increased risk of type $2$ diabetes.