GT for Chemistry paper 22 AS.

[Pals_1010]

in the last question the two functional groups present were alcoholl and ketone right?.....but instead of alcohol i accidently wrote aldehyde...( silly mistake ) ....my question is that will i get error carried forward in the later parts of this question....considering the fact that penalization for same mistake again and again would be unfair... quick reply plzzz

Yeah, they won't penalise you each time... E.c.f .... And besides you ended with a triol for the last part?

 

[iceman]

Yeah, they won't penalise you each time... E.c.f .... And besides you ended with a triol for the last part?

wat was the question?

 

[Pals_1010]

wat was the question?

When G is reduced?

 

[iceman]

yes triol...because my two 'aldehydes' and the 'ketone' would reduce to alcohols....right?

even if i wrote alcohol in the first part instead of aldehyde....the result would have been a triol...but different number of hydrogen atoms i think...

 

[saurabh]

In this case, either elimination or dehydration is acceptable.... Mark schemes often allow one or two options

thank u!!

 

[ghlamo]

Even I did in one it doesn't make any difference they'll give the marks

were we suppose to draw the fully displayed structure in the optical isomer ... i actually cannot recall the question do u remember i am a bit worried and what about the mols of H atoms

 

[Pals_1010]

yes triol...because my two 'aldehydes' and the 'ketone' would reduce to alcohols....right?

even if i wrote alcohol in the first part instead of aldehyde....the result would have been a triol...but different number of hydrogen atoms i think...

Yup that's right

 

[iceman]

Yup that's right

God bless the guy who created ECF

 

[Natashakhan]

Gt shud be low

 

[AdeelRox]

they'll accept displayed formula for all the structures in question five. I've seen it in past mark schemes.

dude actually it was q.4. i said it wrong it was q.4 of paper 22 in whch i drew the whole structures of all the organic compounds in the boxes.

 

[AdeelRox]

they'll accept displayed formula for all the structures in question five. I've seen it in past mark schemes.

dude it was q.4 actually i had posted it wrong. it was q.4 of paper 22 in which i drew the whole structures of organic compounds showing every bond

 

[aaditya menon]

I just checked the w11 gt, and turns out you need atleast around 200/270 if you want an A* in chemistry (5 papers). So
try n not lose more than 50 marks in total to be on the safe side.

 

[AhsanAadil]

I am expecting 33 in p12, 47 in p22 and 21 in p33. What grade should I expect?

 

[ibadsiddiqi]

I am expecting 33 in p12, 47 in p22 and 21 in p33. What grade should I expect?

it will depend on the grade threshold. If the threshold is similar to that of november 2011 then you can expect an A.

 

[AhsanAadil]

it will depend on the grade threshold. If the threshold is similar to that of november 2011 then you can expect an A.

If you've given the paper this year you'd know the expected thresholds. What do you think would become of these marks?

 

[Saad Sarfraz]

it will depend on the grade threshold. If the threshold is similar to that of november 2011 then you can expect an A.

C-D could be worse.

 

[AhsanAadil]

C-D could be worse.

Hell you serious? C or D? Come on!

 

[AdeelRox]

Well, I don't remember any trio being formed! Are you sure it was a triol? Which question are you talking about? It would help if you posted the whole question as it was.

dude in q.4 last part when we reduced structure G we got a triol.
dont u remember G had two OH fuctional groups and 1 ketone group. the ketone group was reduced to triol

 

[Saad Sarfraz]

Hell you serious? C or D? Come on!

Really sorry man! i was checking a maths thread in which i guy wrote similar marks so i thought u were the same one so i wrote exactly the same ans id say you have a chance of an A and inshAllah u'll get it. If not than definitly a higher B. P.S i want u to get an A caz if u do ill do too. My expected are 31-32 mcqs.. 50-52 Theory. 22-26 practical InshALLAH we'll both score an A.

 

[00tanveer]

Yeah I remember now. There was a triol after G was reduced by NaBH4.