Thursday, 14 March 2013

Explain the following terms with one example each. (a) Corrosion (b) Rancidity


Question 20. Explain the following terms with one example each.
(a) Corrosion
(b) Rancidity
Answer:

Corrosion: It is the process in which metals are slowly eaten up by the action of air moisture or chemicals. For example rusting is a form of corrosion in which iron is eaten up by the action of air and moisture and a reddish brown coating of iron oxide is formed as shown in the following chemical reaction.
Rancidity: When the substance containing oils and fats are exposed to air they get oxidised and become rancid due to which their smell, taste and colour change. This process is known as rancidity. For example when a when butter is kept open for a long time then its smell and taste gets changed.

22 comments:

  1. thanx dude. it was very helpful

    ReplyDelete
  2. Is there any chemical reaction (in terms of equations) for rancidity

    ReplyDelete
  3. thnx this ben very usefull to me thnx once again

    ReplyDelete
  4. Is there any chemical reaction for rancidity....[ in terms of eq. ]?¿

    ReplyDelete
  5. Is there any chemical reaction for rancidity....[ in terms of eq. ]?¿

    ReplyDelete
    Replies
    1. This comment has been removed by the author.

      Delete
    2. thnx its very helful .๐Ÿค—

      Delete
  6. I want equation of chemical reaction.

    ReplyDelete
    Replies
    1. C+O2 ----> CO2 it is a example of combination reaction
      Decomposition reaction 's example ---> CaCO3 ---> CaO + CO2

      Delete
  7. Chutiya rancidity ki eq tera baap dega

    ReplyDelete
  8. Thanks for the support .... Very useful site๐Ÿ˜Ž

    ReplyDelete