Which of the following is useful as a food preservative
a. Salts of sorbic acid
b. Sucrolose
c. Ascorbic acid
d. Citric acid
Ans. a
Explanation : food preservative are used to prevent the spoilage of food. salts of sorbic acid. propanoic acid table salt sodium benzoate etc act as food preservatives.
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dm-3 sucrose solution at 20 ° C (molar gas constant, R = 8.314 JK -1 mol -1 ; 1 dm-3 = 0.001 m3 ) a. 4870 Pa b. 4.87 Pa c. 0.00487 Pa d. 0.33 Pa Ans. a (17)
