rajiv gandhi hr

7/25/2019 Rajiv Gandhi Hr

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Vidya Niketan

H. Sec. School

Project

OnSemiconductor

Submitted to: -

Submitted by: -

Rakhi Mam Yash

Maheshwari

12th


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Index1. Certifcate2. Acknowledgeme

nt3. Synosis!. Concl"sion5. #i$liograhy


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Certifcate%he ro&ect reort entitled

'St"dy o( insecticides )

esticides in (r"its

)*egeta$les+

S"$mitted $y Shikhar

cha"dhary o( class ,II A (or

the C#S- senior secondary

examination o( chemistry at

Ra&i* andhi /r. Sec. School

has $een examined.


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Acknowledgement

I wish my to exress my deegratit"de and sincere thanks to

the 0rincial Ra&i* andhi hr.

sec. school (or his

enco"ragement and (or all the

(acilities that he ro*ided (or

this ro&ect.I extend my hearty

thanks to Mrs.S"dha Rathore

chemistry teacher who g"ided

me to the s"ccess("l comletiono( the ro&ect. I take this

oort"nity to exress my dee

sense o( gratit"de (or her

in*al"a$le g"idance constant

enco"ragement immensemoti*ation which has s"stained

my eorts at all stages o( this

ro&ect work..


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I can+t (orget to oer my sincere

thanks to my arents and also to

my classmates who heled me tocarry this ro&ect work

s"ccess("lly..

Synosis

'%he st"dy o( 0esticides and

Insecticides in (r"its and

*egeta$les+ Problem we are facing in today is the

chemicals used in our food. Insecticides

& pesticides are used to protect the crop

from pest for example:! " #$%. !hese

are poisonous chemicals . most of themare nonbiodegradable and remain

penetrated in plant fruits &'egetables.

On eating fruits & 'egetables it get

accumulated in the body of human

causing serious health problems.


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(im:

!o study the presence of insecticides

or pesticides in fruits and 'egetables.

)aterials re*uired : )ortar and pestle "bea+ers" funnel " glass rod " ,lter paper

china dish " water bath" tripod stand" fusion

tube" +nife" test tube. Samples of 'arious

fruits and 'egetables" alcohol" sodium

metal" ferric chloride" ferrous sulphatecrystals" distilled water and dil.

Sulphuric acid.

Procedure: !a+e di-erent types of fruits

and 'egetables and cut them into small

pieces separately. !ransfer the cut pieces of'arious fruits and 'egetables into it

separately and crush them. !a+e di-erent

+inds for each +ind of fruits and 'egetables

and place the crushed fruits and 'egetables

in these bea+ers and add // ml of alcohol

to each of these. Stir well and ,lter. %ollectthe ,ltrate in separate china dishes"

0'aporate the alcohol by heating the china

dishes one by one o'er a water bath and let

the residue dry in the o'en. $eat a small

piece of sodium in a fusion tube" till it melts.

!hen add one of the abo'e residues from


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the china dish to this fusion tube and heat it

till red hot. rop the hot fusion tube in a

china dish containing about / ml of distilled

water. #rea+ the tube and boil the contents

of the china dish for about 5 minutes. %ool

and ,lter the solution. %ollect the ,ltrate. !o

the ,ltrate add ml of freshly prepared

ferrous sulphate solution and warm the

contents. !hen add 12 drops of ferricchloride solution and acidify with dilute $%l.

If a blue or green ppt. or colouration is

obtained it indicates the presence of

nitrogen containing insecticides. 3epeat the

test of nitrogen for residues obtained from

other fruits and 'egetables and record the

obser'ation.

Obser'ation :

S.no

ame o( (r"itor *egeta$le

0resence o(insecticides and

esticides

1 Ale Yes2 rae Yes

3 #rin&al Yes


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! %omato Yes

Concl"sionPreference should be gi'en to biodegradable

insecticides li+e )alathion. !he presence of

Insecticides residues in e'en raw samples of

wheat" ,sh" meat " butter etc. ha'e arousedthe concern of agricultural administrators"

scientists and health o4cials all o'er the

world to put a chec+ o'er the use of

insecticides and to search for non

insecticidal means of pest control.


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#i$liograhy

)oderns abc of practical chemistry

6II

%omprehensi'e practical chemistry 7

6II 8%03! chemistry 6II

rajiv gandhi hr

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