Question

Which of the following is not used as food preservatives?(a) Salt(b) Sugar(c) Vinegar(d) Methane 
Answer:- d. methane​

Answer 1

Answer:

Sugar is not used as a preservative

Explanation:

Because sugar is attracted by many organisms ( including microorganisms) because of the starch amount present in it .

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Answer 2

Of the following (d) Methane is not used as preservatives .

• Methane is one of the components of natural gas. It's flammable in nature. Over the world it is mainly used as a fuel. This is why methane cannot be used as food preservative. Hence, (d) is correct
• Salt is mainly used for preservation in lot of pickles over the world. It drains out excessive moisture and enhances preservation.
• Sugar mainly acts as preservatives in jams and jelly. Usually sugar syrup in form of liquid glucose is used as it doesn't crystallizes early.
• Due to the presence of acetic acid in vinegar it retards the growth of microorganisms in food stuff. It doesn't comprise the flavour too.