Presence of Insecticides and Pesticides in Fruits and Vegetables 2012

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CHEMISTRY PROJECT FOR CLASS 12

.: Title :.

To study the presence of Insecticides and Pesticides in Fruits and Vegetables


PROCEDURE

1) Take different types of fruits and vegetables and cut them into small pieces separately.

2) Transfer the cut pieces of various fruits and vegetables into it separately and crush them .

3) Take different kinds for each kind of fruits and vegetables and place the crushed fruits and vegetables in these beakers and add 100 ml of alcohol to each of these .

4) Stir well and filter. Collect the filtrate in separate china dishes, Evaporate the alcohol by heating the china dishes one by one over a water bath and let the residue dry in the oven .

5) Heat a small piece of sodium in a fusion tube , till it melts.

6) Then add one of the above residues from the china dish to this fusion tube and heat it till red hot.

7) Drop the hot fusion tube in a china dish containing about 10 ml of distilled water.

8) Break the tube and boil the contents of the china dish for about 5 minutes .

9) Cool and filter the solution. Collect the filtrate . To the filtrate add 1 ml of freshly prepared ferrous sulphate solution and warm the contents.

10) Then add 2-3 drops of ferric chloride solution and acidify with dilute HCl. If a blue or green ppt. or colouration is obtained it indicates the presence of nitrogen containing insecticides.

11) Repeat the test of nitrogen for residues obtained from other fruits and vegetables and record the observation.

Download Complete Project from Below link :
www.icbse.com/projects/class-xii/chemistry/insecticides-fruits.zip

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Ask a Question:

  • plz send me the theory of this project. its urgent plz……howthis experiment works, ie the chemistry behind it.

    aghil on 02 Feb 2013
  • how the presence of nitrogen in fruits and vegetables decide the presence of insecticides?

    soumya on 15 Jan 2013
  • i want observation table for the project on presence of insecticide & pesticides in fruits & vegetables

    himanshi on 11 Dec 2012
  • any other chemical that could be used to study the presence of insecticides and pesticides in various fruits or vegetables?

    kirti jangala on 07 Nov 2012
  • i dont understand anything.what is this ? please include the things which is important to the project .

    A.K.S

    A.K.S on 05 Aug 2012
  • the fruits and vegetables always contain nitrogen in such case how the presence nitrogen decide the presence of insectucides

    sreelaja on 17 May 2012
  • what will be the tollerence limit of nitrogen for human healthy body ???

    sudhir l. nagardalekar on 21 Feb 2012
  • fruit and vegetable contain nitrogen so how can we test insecticides and pesticides with this method

    Lavika singh on 19 Feb 2012
  • fruits and vegetable normally contain nitrogen so how can this test is a comfirmatory test

    jeetu singh on 19 Feb 2012
  • any another method to find the prensence of insecticides
    and pesticides

    rock on 11 Jan 2012
  • any another method to find out the presence of pesticide and insecticide in fruit and vegitable.

    lawrence on 13 Oct 2011
  • what else can we write in this project apart frm the itroduction given in it….its theory part is very small..!!!
    can we use any other chemicals in place of the mentioned ones??

    Roopal on 25 Aug 2011
  • WHAT KIND OF CHEMICALS USED IN DETERMINING THE INSECTICIDES
    AND PESTICIDES IN DIFFERENT FRUITS AND VEGETABLES

    HARSH MANHAS on 21 Aug 2011
  • usefullness of this experiment
    how it is usefullness of this project in day to day life

    dhanya on 18 Aug 2011
  • which xchemical should be used to remove pestisides from vegetables and fruits?

    SAAD on 12 Aug 2011
  • very much short projects..no use thsese kind of short projects..plz wrtie aleast of 7-8 pages..

    mona on 11 Jul 2011
  • which chemical should be used to remove pestisides from vegetables and fruits

    lal bahadur on 09 Jun 2011
  • which xchemical should be used to remove pestisides from vegetables and fruits

    lal bahadur on 09 Jun 2011
  • any another method to find out the presence of pesticides and inseticides in fruits and vegitable?

    neetu on 07 Jun 2011
  • study the presenceof insecticides and pesticides in fruts and vegetables

    varun on 07 Jun 2011
  • why u r writing projects in short the project should be of atleast 8 to 9 pages

    prangal singh chauhan on 17 Jan 2011