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What is rancidity ? Mention any two ways...

What is rancidity ? Mention any two ways by which rancidity can be prevented.

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The oxidation of oils or fats in a food resulting into bad smell and bad taste is called rancidity .
It can be prevented by __
(i) adding anti-oxidants.
(ii) flushing with nitrogen gas.
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OSWAAL PUBLICATION-CHEMICAL REACTIONS AND EQUATIONS-TOPIC-2 (Types of Chemical Reactions-Corrosion and Rancidity) (SHORT ANSWER TYPE QUESTION-II)
  1. What is rancidity ? Mention any two ways by which rancidity can be pre...

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  2. Name the term used to indicate the development of unpleasant smell and...

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  3. A solution of copper sulphate was kept in an iron pot. After few days...

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  4. Some articles made of silver, copper and iron get coloured coating ove...

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  5. Write balanced equation for the following reactions and also name the ...

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  6. Select (i) Combination reaction (ii) decomposition reaction and (iii) ...

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  7. State the kind of chemical reactions in the following examples: (i)...

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  8. Name two metals which do not correct easily . Give an example in each ...

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  9. When is a chemical reaction considered a double displacement reaction ...

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  10. Differentiate between a combination reaction and a decompositionreacti...

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  11. The following diagram displayes a chemical reaction. Observe carefull...

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  12. In the electrolysis of water: (i) Name the gas collected at the cath...

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  13. Name the salts that are used in black and white photography. Give re...

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  14. A small amount of calcium oxide is taken in a breker and water is adde...

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  15. 2 g lead nitrate powder is taken in a boiling tube . The boiling tube ...

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  16. When food containing fat or oil is not used and left for a long time, ...

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  17. Differentiate between an exothermic reaction and an endothermic reacti...

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  18. 'Combination reaction is the reverse of decomposition reaction .'' Jus...

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  19. In the following chemical reaction ''zinc oxide reacts with carbon to ...

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  20. (i) Give an example for an a combination reaction which is exothermi...

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