Practical | GUIDE BOOK(free Download) | POST YOUR DOUBTS HERE.

[robinhoodmustafa]

bump

 

[Suchal Riaz]

bump

thanks

 

[robinhoodmustafa]

thanks

will you add those on to your front page?
I found helpful chem and bio practical tips. Added the credit and source too. Just rename the file name.

 

[Suchal Riaz]

will you add those on to your front page?
I found helpful chem and bio practical tips. Added the credit and source too. Just rename the file name.

i did. thanks

 

[chocolate_girl]

Ty so much for the tag nd link sharing

 

[george ashraf]

PLEASE UPLOAD IT AS SOON as possible

 

[Thought blocker]

PLEASE UPLOAD IT AS SOON as possible

uploaded.

 

[Hinafatima]

Thanks for the great help!

 

[joanna omar]

Suchal Riaz ......> isn't there any sources of guides fro Bio paper 3 and 5 practicals ?

 

[chocolate_girl]

"the titration doesn’t look fake. like initial reading = 50 cm cubed. every reading
starting from 0.00 etc.."
cant v start each burette reading with 0.00 cm3??

and for the percentage uncertainty in measuring cylinder, dont v divide the smallest division by 2 for uncertainty?
Suchal Riaz

 

[chocolate_girl]

"the titration doesn’t look fake. like initial reading = 50 cm cubed. every reading
starting from 0.00 etc"
cant we use each initial burette reading 0.00 as sometimes the reading exceeds 25cm3?

also for percentage uncertainty in measuring cylinder dont v divide smallest division by half to find uncertainty?

Suchal Riaz

 

[Suchal Riaz]

"the titration doesn’t look fake. like initial reading = 50 cm cubed. every reading
starting from 0.00 etc"
cant we use each initial burette reading 0.00 as sometimes the reading exceeds 25cm3?

also for percentage uncertainty in measuring cylinder dont v divide smallest division by half to find uncertainty?

Suchal Riaz

uncertainty means how much uncertian you are. actually if you observe very carefully the uncertainity is 1/2 of smallest reading. but in burette the upper and lower arcs of water confuse a little bit so for me i am uncertian in about 0.1 cm cubed.

 

[Suchal Riaz]

Bump

 

[Suchal Riaz]

Haya Ahmed

 

[Suchal Riaz]

https://www.xtremepapers.com/commun...load-post-your-doubts-here.33074/#post-758366
Readings of 2013 past papers to practice working and graphs.

 

[100]

can somebody plzz tell me some tips on tests for gases and some people told me you atually dont have to test for it is this true?

 

[Suchal Riaz]

can somebody plzz tell me some tips on tests for gases and some people told me you atually dont have to test for it is this true?

you must test for gases when it's appropriate. such as when adding NaOH(test for ammonia) and when adding dilute HCL(SO2)

 

[Suchal Riaz]

what is strach solution and how and when it is used. if we add starch solution and it gives ppt what does it show?
Thought blocker ZaqZainab

 

[Thought blocker]

what is strach solution and how and when it is used. if we add starch solution and it gives ppt what does it show?
Thought blocker ZaqZainab

mehria

 

[chocolate_girl]

uncertainty means how much uncertian you are. actually if you observe very carefully the uncertainity is 1/2 of smallest reading. but in burette the upper and lower arcs of water confuse a little bit so for me i am uncertian in about 0.1 cm cubed.

Least count of burette is o.005cm3 how can u have uncertainty to 0.1cm3 max should b o.o1cm3
Also can v start each titre reading with o.oo?