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Alcohols Phenols and Ethers question

2023 · 25 Jan · Shift 2 · Q12
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  5. /2023 · 25 Jan · Shift 2 · Q12

Alcohols Phenols and Ethers question

2023 · 25 Jan · Shift 2 · Q12

JEE MainChemistryAlcohols Phenols and EthersMCQ+4 / −1
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R Assertion A : Butylated hydroxy anisole when added to butter increases its shelf life. Reason R : Butylated hydroxy anisole is more reactive towards oxygen than food. In the light of the above statements, choose the most appropriate answer from the options given below
  1. A
    A is correct but R is not correct
  2. B
    Both A and R are correct but R is NOT the correct explanation of A
  3. C
    Both A and R are correct and R is the correct explanation of A
  4. D
    A is not correct but R is correct
View written solutionFree

Correct answer: C

  1. Identify the substance

    Butylated hydroxy anisole (BHA) is a well-known antioxidant used in food preservation, especially in fatty foods like butter.

  2. Check Assertion A

    Assertion A says:

    BHA when added to butter increases its shelf life.

    This is correct because BHA prevents oxidation of fats and oils in butter, thereby delaying rancidity.

  3. Check Reason R

    Reason R says:

    BHA is more reactive towards oxygen than food.

    This is also correct in the practical antioxidant sense. BHA gets oxidized preferentially and thus protects the food material from oxidation.

  4. Does R explain A?

    Yes. Since BHA reacts with oxygen (or intercepts oxidative free-radical processes) more readily than the food components, it prevents oxidation of butter. Hence, butter remains fresh for a longer time, increasing its shelf life.

  5. Conclusion

    • Assertion A is correct.
    • Reason R is correct.
    • Reason R correctly explains Assertion A.

Therefore, the correct option is:

C\boxed{\text{C}}C​

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