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Ask iit jee aieee pet cbse icse state board community Community Discussion Question: Chem practicals
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djdylan2000 (204)

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The chem practs 4 board exam have lots 2 do in little time. Anyone knows any tips and trciks 2 do titrations and salt analysis very quickly? (less than 1.5 hrs combined) 


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nunoxic (1460)

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which board ?

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muskaanrelhan (574)

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In salt analysis...first of all see da colour..check the smell.....if u can detect the smell..or colour..directly go for confirmatory tests


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dev_22oct (1384)

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well the only way to do it fast is to do practice which w'll help u to get acquinted with the salts ie their colours , smell etc...try flame test for gp 5...


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muskaanrelhan (574)

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I'l tell u a trick to titrations...


Just get da 1st reading by carefully doing da experiment step by step..dont take short cut in first reading


now...again repeat da process for 2nd reading...


now calculate da difference btwn da two..


add da difference in 2nd readind to get the third reading and fourth reading..


Always abandon the first reading..its always incorrect..


and


always write da readings in decimals..


like..if u get a reading 9..


dun write it as 9 write it as 9.0


but its better not to include exact values..


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djdylan2000 (204)

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Thanks for that trick muskaan


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tarinbansal (3903)

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Lab assistant ko pata le. 10 minutes and ur practical will be over + full marks. :D

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paddy.dude (1154)

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yup tarin is rght.....u ask the lab assitant and he will tell u..........thats how i did it..........
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