Biology; Chemistry; Physics: Post your doubts here!

[RadzMau]

For Physics ATP, when they ask you to calculate gradient using the graph, what are you supposed to show on the graph? I guess I must show the two points that I'll need to calculate the gradient and what else?

 

[Iffat]

I think you wrote the wrong paper, cause i cant find that question

no its the ryt paper i checked again 2004 oct-nov paper 3

 

[Miss_Z]

For Physics ATP, when they ask you to calculate gradient using the graph, what are you supposed to show on the graph? I guess I must show the two points that I'll need to calculate the gradient and what else?

The gradient triangle.

 

[RadzMau]

The gradient triangle.

Yeah, thanks

 

[Miss_Z]

Yeah, thanks

You're welcome, though that was a late answer Oh well, ATP is over and we didn't even get to calculate gradient.

 

[RadzMau]

You're welcome, though that was a late answer Oh well, ATP is over and we didn't even get to calculate gradient.

Hehehe, yeah! Luckily

 

[smart_boy]

Oh cmon its not difficult,its more easier and btw each variant has the same paper strength none is like hardest and none is like easiest

Hi, can you pls help me out with IG 0610 Biology nov 2003 paper 3 Q3(b),(c) and (d)...
Pls help as soon as possible cos my exams are not very far... ​

 

[somya]

Hi, can you pls help me out with IG 0610 Biology nov 2003 paper 3 Q3(b),(c) and (d)...​

Pls help as soon as possible cos my exams are not very far... ​

b. i-the bacteria in the sewage respire- use oxygen
ii- bacteria die out of competition
c. i- the sewage starves the algae of sunlight- they cannot photosynthesize and make food and thus they die
ii- the level of algae drops towards Z as the dissolved nitrates decrease
d- the herbicides will kill the water plants and disturb the food chain....!

 

[Igcse stuff]

hey guys, i need notes for colour changes in chemical reactions

 

[smart_boy]

b. i-the bacteria in the sewage respire- use oxygen
ii- bacteria die out of competition
c. i- the sewage starves the algae of sunlight- they cannot photosynthesize and make food and thus they die
ii- the level of algae drops towards Z as the dissolved nitrates decrease
d- the herbicides will kill the water plants and disturb the food chain....!

Thanks a lot..!!!

 

[falcon678]

hey guys, i need notes for colour changes in chemical reactions

umm wich reactions??

 

[Igcse stuff]

umm wich reactions??

something like this

 

[smart_boy]

how to produce chlorine at anode in electrolysis?

When conc aq sodium chloride is electrolysed, chloride ions will go to the anode and will lose an electron each, to become chlorine gas... Get it..?

 

[falcon678]

something like this

dude check out the appendix of ur syllabus...everything is given there u need to knw bout such colour chnges..!

 

[A star]

something like this

only basic colour changes only 2 or max 5 mark question comes in cie so its not a big topic

 

[Igcse stuff]

dude check out the appendix of ur syllabus...everything is given there u need to knw bout such colour chnges..!

thanks man.

 

[Igcse stuff]

only basic colour changes only 2 or max 5 mark question comes in cie so its not a big topic

you can't afford to loose 5 marks if you want A*

 

[A star]

you can't afford to loose 5 marks if you want A*

well it would be silly thing to loose mark on anyway. not really atp counts for only22% so 2 to 5 marks will barely make 3 marks out of 100

 

[Igcse stuff]

well it would be silly thing to loose mark on anyway. not really atp counts for only22% so 2 to 5 marks will barely make 3 marks out of 100

i guess you have a point, although, i still like maximizing marks and perfection.

 

[alihaiderrrt]

Assalam-o-Allaikum and Hi everyone ,
hope u all are doin great !

Well as the topic says help for chemistry biology and Physics is available here that means that u can ask any mind blowing question or ask any question regarding a particular topic or ask abt any questions from Past paper or any of your text books.

I made this topic so that people dont make many posts asking abt bio,physics or chemistry individually but they can post their reply here where it can be answered with ease and the members wont have to go searching for topics to help! !

So what are u waiting for now write ur questions here !
THANKS and Bye or Allah Hafiz !

In the last question of ATP paper,there is a question of temp...u need to plot points and then join the points with two intersecting straight lines...what does it mean...i read some examiner report and marking scheme but i am still not getting it..how should i draw the lines....if u can post a pic please do....my paper is tomorrow :'( .