POST YOUR BIO AND CHEM PAPER 1 DOUBT HERE !!!!

[MERIHAN]

YOU CAN POST YOUR DOUBT HERE AND I HOPE SO ALL THE MEMBERS WILL TRY TO HELP EACH OTHER BCUZ " "Success has nothing to do with what you gain in life or accomplish for yourself. It's what you do for others."

 

[MERIHAN]

CAN ANYONE HELP ME IN THIS QUESTION !! I AM NOT GETTING !!! HOW IT IS "D "

 

[Abu mota]

chemistry may/june 2007 question 3 can anyone explain it to me. ty

 

[Dsilentkila]

View attachment 11705 CAN ANYONE HELP ME IN THIS QUESTION !! I AM NOT GETTING !!! HOW IT IS "D "

a recessive gene can show up in the phenotype ONLY if the genes (allele pair) are HOMOZYGOUS.
for e.g.
If gene for Awesomeness is "A" and gene for non-awesomeness is "a".
(non-awesomeness, "a"= recessive , in this example)>
the non awesomeness characteristic will show up ONLY if the gene pair is "aa", which is homozygous.
lol, hope i made sense

 

[MERIHAN]

a recessive gene can show up in the phenotype ONLY if the genes (allele pair) are HOMOZYGOUS.
for e.g.
If gene for Awesomeness is "A" and gene for non-awesomeness is "a".
(non-awesomeness, "a"= recessive , in this example)>
the non awesomeness characteristic will show up ONLY if the gene pair is "aa", which is homozygous.
lol, hope i made sense

t
THANK YOU !! GOT IT

 

[TERMINATOR]

I am kind of confused why hydration of SO3 to H2SO4 is not a redox reaction. SO3+H2O=H2SO4 I'll be really glad if someone could clarify this.

 

[saroooor]

chemistry may/june 2007 question 3 can anyone explain it to me. ty

I believe that the boiling point for water is ' 100 C '. So it is lower than it Liquid X . So you eliminate choices C and D . Then in the the thermometer each line is worth 0.5 . Start first Half the one in pic. then start .5 then other .5 till you reach a value of 5.5 . So who is like 5.5 is ' 75.5 C' .

 

[saroooor]

I am kind of confused why hydration of SO3 to H2SO4 is not a redox reaction. SO3+H2O=H2SO4 I'll be really glad if someone could clarify this.

Where is the loss or gain of electrons ?

 

[TERMINATOR]

Where is the loss or gain of electrons ?

Ooooo there isn't any! Hahah! Thanks a lot saroooor, I'm rily thankful!

 

[IGSCE.Geek.]

i am actually not studying or solving anything...though i feel i should i will solve 4 days before the exams . i love bio paper1 but not a lot for chemistry :s

 

[IGCSE O/L student]

I believe that the boiling point for water is ' 100 C '. So it is lower than it Liquid X . So you eliminate choices C and D . Then in the the thermometer each line is worth 0.5 . Start first Half the one in pic. then start .5 then other .5 till you reach a value of 5.5 . So who is like 5.5 is ' 75.5 C' .

but how do we know how much each interval represents?

 

[thats_me]

but how do we know how much each interval represents?

I think u'll have to estimate it..

 

[saroooor]

but how do we know how much each interval represents?

Each one is worth .5 , So Start counting from the first half it will give you 5.5 , you see from the choices which one has this value its 75.5 .

 

[IGCSE O/L student]

I think u'll have to estimate it..

Each one is worth .5 , So Start counting from the first half it will give you 5.5 , you see from the choices which one has this value its 75.5 .

thanks!

 

[MaRyy xD]

Emmm can anyone explain to me why "D" is th answer? :/
--> Oct/Nov 2004 Q.32 ^___^

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

Emmm can anyone explain to me why "D" is th answer? :/
--> Oct/Nov 2004 Q.32 ^___^

Assalam-o-alaikum wr wb...
the answer is A

 

[thats_me]

Emmm can anyone explain to me why "D" is th answer? :/
--> Oct/Nov 2004 Q.32 ^___^

i guess thats because galvanization is to protect iron by coating it with zinc ..

 

[thats_me]

Assalam-o-alaikum wr wb...
the answer is A

Walaikumasalam http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Chemistry (0620)/0620_w04_ms_1.pdf its D

 

[Rania MD]

Hey can anyone help me with this Question in Biology, I will be very grateful!
http://www.xtremepapers.com/papers/...bridge IGCSE/Biology (0610)/0610_w05_qp_1.pdf
Q.4 , My answer was A but I don't know why the right answer is D :/
Thank You!

 

[сᴏᴏʟ сяуѕтᴀʟѕ]

Walaikumasalam http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Chemistry (0620)/0620_w04_ms_1.pdf its D

LOL she never mentioned the subject so i was checking bio