ANSWERING ALL BIO/CHEM PAPER 1 DOUBTS :)

[mamoon123]

Where'd you guys get the past papers before 2003?
I've only got 2003-2011 :/

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

Here are all the answers...chose the biology part on your own

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

Where'd you guys get the past papers before 2003?
I've only got 2003-2011 :/

Assalam-o-alaikum wr wb...
Here is for chemistry...

 

[Besterlinks]

Assalam-o-alaikum wr wb...
m not sure about Q4 but 23 is here

Thanks

 

[tornado]

i think 7 is wrong ????
i believe b is the answer

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

Thanks

Your Welcome

 

[tornado]

and 18 why steel ??

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

i think 7 is wrong ????
i believe b is the answer

nope...iodine is in the last beaker..the thing which is being dropped!
first we are boiling the leaf in water to break the cell wall..secondly in alcohol for it to enter and remove the color of chlorophyll so 3 is alcohol and 2 water...
after that we are again boiling in water to soften the leaf, so 4 is water.

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

and 18 why steel ??

bcoz stell also conducts electricity..

 

[Besterlinks]

Here are all the answers...chose the biology part on your own

Firstly, thank you for helping all of us for the MCQ papers. Awesome!!!

1. Got a doubt in QUESTION 10 in the paper 'Document 1 by Catalyst' (you've written all your answers in the document 'Science....docx'

2. I don't understand Question 4 - Nov 1994 - IGCSE Biology. Why A and not D? Also, questions 28 and 37 in the same paper...Please help
Thanks.

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

Where'd you guys get the past papers before 2003?
I've only got 2003-2011 :/

Assalam-o-alaikum wr wb...
Here is for chemistry...

aoa wr wb..
and here is for biology!

 

[tornado]

i don't understand number 24 please help :0

 

[svenas]

nope...iodine is in the last beaker..the thing which is being dropped!
first we are boiling the leaf in water to break the cell wall..secondly in alcohol for it to enter and remove the color of chlorophyll so 3 is alcohol and 2 water...
after that we are again boiling in water to soften the leaf, so 4 is water.

U r ryt !

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

Firstly, thank you for helping all of us for the MCQ papers. Awesome!!!

1. Got a doubt in QUESTION 10 in the paper 'Document 1 by Catalyst' (you've written all your answers in the document 'Science....docx'

it's okie...juss remember me in your prayers

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

2. Also, I don't understand Question 4 - Nov 1994 - IGCSE Biology. Why A and not D?

Thanks.

 

[tornado]

so first

nope...iodine is in the last beaker..the thing which is being dropped!
first we are boiling the leaf in water to break the cell wall..secondly in alcohol for it to enter and remove the color of chlorophyll so 3 is alcohol and 2 water...
after that we are again boiling in water to soften the leaf, so 4 is water.

so first water > alcohol> water > iodine so answer is b

 

[tornado]

and explain 24 if you can

 

[Besterlinks]

Thank you so much.

Also, Questions 28 and 37 in Nov 1994 - IGCSE Biology.

 

[svenas]

View attachment 12556

can u plz explain q13 about soil erosion?

 

[Besterlinks]

it's okie...juss remember me in your prayers
View attachment 12554

but since they grow from two DIFFERENT pieces of potato tuber, shouldn't parents be different?