Physics, Chemistry and Biology: Post your doubts here!

[The_Boss]

HOW TO DO THIS QUESTION B(II),C(II) AND D(II)View attachment 53358

Bii- Carbonate have enough Activation Energy so not required.
Cii- When crystallizing at later stage the acid will concentrate in the crystals of salt to produce an impure composition.
Dii- Turns Anhydrous and gives off steam.

 

[DANISH182]

Bii- Carbonate have enough Activation Energy so not required.
Cii- When crystallizing at later stage the acid will concentrate in the crystals of salt to produce an impure composition.
Dii- Turns Anhydrous and gives off steam.

SHOULDN'T WE WRITE DEHYDRATE FOR THE LAST ONE

 

[The_Boss]

SHOULDN'T WE WRITE DEHYDRATE FOR THE LAST ONE

-_____- U serious?
They both relatively mean the same thing. Anhydrous is the end product u get but Dehydrate is the process.
And y is everything CAPS?

 

[DANISH182]

-_____- U serious?
They both relatively mean the same thing. Anhydrous is the end product u get but Dehydrate is the process.
And y is everything CAPS?

JUST LOVE TO WRITE IN CAPS

 

[My Name]

how to fix a beaker at a retord?

Are you giving alternative to practical OR practical?
When you see the stand you'll know how to fix it.If you are giving ATP then don't worry about that.

 

[Muaaz Iqbal]

I don't know which question u r talking abt but it is mostly like this......

View attachment 53339

Ahan Thank's .

 

[DANISH182]

Are you giving alternative to practical OR practical?
When you see the stand you'll know how to fix it.If you are giving ATP then don't worry about that.

ALTERNATIVE TO PRACTICALS P62

 

[DANISH182]

THE OBSERVATION QUESTIONS IN CHEMISTRY P62 IS A BIT DIFFICULT FOR ME SO ANY TIPS FRIENDS!!!!!!!

 

[DANISH182]

why should the acid not been in excess?
Chemistry p62 o/n/2014 3c(ii)

 

[Mr.Physics]

HOW TO DO THIS QUESTION B(II),C(II) AND D(II)View attachment 53358

LOL man the acid used in b) i) should be sulfuric acid coz you wanna make magnesium sulfate !! Hydrochloric acid would make magnesium chloride !! not magnesium sulfate ! Hope it helped

 

[Mr.Physics]

Still studying Islamiiyat !! O gosh it's so hard !! Muazz bach gya hay tu !!

 

[My Name]

THE OBSERVATION QUESTIONS IN CHEMISTRY P62 IS A BIT DIFFICULT FOR ME SO ANY TIPS FRIENDS!!!!!!!

Are you talking about the salt analysis part?

 

[Muaaz Iqbal]

Still studying Islamiiyat !! O gosh it's so hard !! Muazz bach gya hay tu !!

 

[Muaaz Iqbal]

Still studying Islamiiyat !! O gosh it's so hard !! Muazz bach gya hay tu !!

Just Learn Events That's it

 

[My Name]

In chemistry
How exactly are we supposed to draw the graphs?
When do we draw the curve, line of best fit
do we avoid anamalous points...
and when do we draw two lines cutting one another
Please tell me anything about graphs in chemistry paper 6

It depends on the question.
Curve is when they say smooth line graph( mostly rate questions have this type),linemof best fit is one usually one point doesn't exactly fit in with the rest of the points.
Yes,anomalous points (usually there'd be one or two) should be ignored when drawing the best-fit line.
This again depends on the question after you plot the points you'll see.

Take a look at this:


(That pic has been taken from syllabus 2016-2018!)
So I hope that helps Best of luck for your exam.

 

[Raduwan]

Does anyone have the 2015 leaked papers (any paper is fine), if u have it please give it to me on this email [email protected] please give, I need it very urgently!!! :'(

 

[Mr.Physics]

Just Learn Events That it

Dude you are probably gonna give Islamiyat next year !! Then I 'll ask from ya !!!!

 

[DANISH182]

https://docs.google.com/file/d/0BwQn8rjDx7cBOTVEUEhNbi11SWs/view?pli=1
Try that. It's p6 revision.

thnx

 

[DANISH182]

guys need help urgently exam on tuesday:
HOW TO DRAW THIS 0620/S14/M/J

 

[DANISH182]

LOL man the acid used in b) i) should be sulfuric acid coz you wanna make magnesium sulfate !! Hydrochloric acid would make magnesium chloride !! not magnesium sulfate ! Hope it helped

YEAH JUST DIDN'T READ THE QUESTION CAREFULLY
MAN I AM MAKING SOME SILLY MISTAKES!!!!!!!!!!!!!!!!!!!