RANCIDITY

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When oil or fat or left over cooking oil for making food stuff undergoes oxidation if stored for a long time and it is found to have foul odour called rancidity.
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Packed food items made up of oils and fats are generally flushed with inert gas To protect them from corrosion. (II) They protect their flavours. (III) Tp protect them from being rancid . (IV) To protect their taste. Which of the following statements are correct ?

Double Displacement reaction ||Corrosion || Rancide || Oxidation Reduction

Butylated hydroxytoluence (BHT) is used as an antioxidant in processed foods ( it prevent fats and oils from becoming rancid). A solution of 2.5 g of BHT in 100 g of benzene has a freezing point of 4.88 K . What is the molecular weight of BHT ? (k_(f)("benzene")=5.12 K mol^(-1)kg , freezing point of benzene = 5.45 K )

(a) Explain the term "rancidity". What damage is caused by rancidity ? (b) What type of chemical reaction is responsible for causing rancidity ? (c ) State and explain the various methods for preventing or retarding rancidity of food.

Among the following organic acids, the acid present in rancid butter is :

NAVNEET PUBLICATION - MAHARASHTRA BOARD-MISCELLANEOUS QUESTIONS -Chemical Reactions and Equations
  1. Explain the term reactant and product giving examples.

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  2. Write the balanced equations for the following reactions : (i) H(2...

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  3. (ii) Ag(s) +HCI(I) to AgCI darr + H(2) uarr

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  4. (iii) H(2)SO(4(aq)) + NaOH((aq)) to Na(2)SO(4(aq)) + H(2)O((I))

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  5. (a) How does the rate of reaction depend upon the concentration of rea...

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  6. (a) How does the rate of reaction depend upon the concentration of rea...

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  7. How does the rate of a reaction depend upon the temperature of reactan...

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  8. How does the rate of a reaction depend upon the catalyst ? Give a sui...

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  9. Identify the substances that are oxidised and the substances that are ...

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  10. Identify the substances that are oxidised and the substances that are ...

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  11. Identify the substances that are oxidised and the substances that are ...

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  12. Identify the following reactions the reactants that undergo oxidation ...

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  13. 2Ag(2)O to 4Ag + O(2) uarr

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  14. 2Mg + O(2) to 2MgO

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  15. Identify from the following reactions the reactants that undergo oxida...

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  16. Observe the following picture and write down the chemical reaction wi...

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  17. Complete the process of iron rusting by filling the blanks. Suggest a ...

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  18. RANCIDITY

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