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How do you study the presence of insecticides and pesticides in fruits and vegetables?
Take different types of fruits and vegetables and cut them into small pieces separately. Transfer the cut pieces of various fruits and vegetables into mortal separately and crush them with the pestle. 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 . 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 . Heat a small piece of sodium in a fusion tube , till it melts. Then add one of the above residues from the china dish to this fusion tube and heat it till red hot. Drop the hot fusion tube in a china dish containing about 10 ml of distilled water. Break the tube and boil the contents of the china dish for about 5 minutes . Cool and filter the solution. Collect the filtrate . To the filtrate add 1 ml of freshly prepared ferrous sulphate solution and warm the contents. 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. Repeat the test of nitrogen for residues obtained from other fruits and vegetables and record the observation.
What else can I help you with?
To study the presence of Insecticides and Pesticides in Various Fruits and Vegetables?
eat the fruits or vegetables ,if you fall ill then we can say whether the fruits are infected by insectisides and pestisides
What is the Current problem of fruits and vegetables in Pakistan?
high lead levels from polluted water, insecticides and pesticides residues in fruits and vegetables. usman cheema
Why is it recommended to wash fruits and raw vegetables before eating them?
It is recommended towash fruits and raw vegetables before eating them because some fruits and vegetables may contain pesticides on their them.
Why is it harmful to spray insecticides in homes and on fruits and vegetables?
It is harmful because these can seep into the fruits and vegetables and then be consumed. They can also be left on hands and skin which can get into the body as well.
Presence of pesticides in fruits nd vegetables?
Every years, EWG comes out with "The Shopper's Guide to Pesticides" where it ranks pesticide contamination for 53 popular fruits and vegetables based on an analysis of 51,000 tests for pesticides on these foods, conducted from 2000 to 2009 by the U.S. Department of Agriculture and the federal Food and Drug Administration. Nearly all the studies on which the guide is based tested produce after it had been rinsed or peeled.
What are Organic vegetables and fruits?
organic stuff is stuff that's been grown without sprays and pesticides and stuff, just totally natural stuff.
How would glucose test strips and iodine react to fruits and vegetables?
Glucose test strips would not react with fruits and vegetables because they are used to detect glucose in liquids such as urine or blood, not solid foods like fruits and vegetables. Iodine can be used to detect the presence of starch in fruits and vegetables by turning blue-black in the presence of starch.
Why should you wash vegetables and fruits before eating?
To wash away any pesticides that may have been sprayed on them
How can you prevent ADHD?
Eat organic fruits and vegetables, or foods without pesticides:) they say that there are materials inside the pesticides that may cause ADD or ADHD:) i hope this helps:)
Which vegetables and fruits have the highest levels of pesticides on them?
Every years, EWG comes out with "The Shopper's Guide to Pesticides" where it ranks pesticide contamination for 53 popular fruits and vegetables based on an analysis of 51,000 tests for pesticides on these foods, conducted from 2000 to 2009 by the U.S. Department of Agriculture and the federal Food and Drug Administration. Nearly all the studies on which the guide is based tested produce after it had been rinsed or peeled.
Excessive use of pesticides on fruits and vegetables?
Every years, EWG comes out with "The Shopper's Guide to Pesticides" where it ranks pesticide contamination for 53 popular fruits and vegetables based on an analysis of 51,000 tests for pesticides on these foods, conducted from 2000 to 2009 by the U.S. Department of Agriculture and the federal Food and Drug Administration. Nearly all the studies on which the guide is based tested produce after it had been rinsed or peeled.
What are the 47 dirtiest fruits and vegetables with pesticides?
Every years, EWG comes out with "The Shopper's Guide to Pesticides" where it ranks pesticide contamination for 53 popular fruits and vegetables based on an analysis of 51,000 tests for pesticides on these foods, conducted from 2000 to 2009 by the U.S. Department of Agriculture and the federal Food and Drug Administration. Nearly all the studies on which the guide is based tested produce after it had been rinsed or peeled.
