Chemistry 43!!! How was it?!!

[Henry930821]

Im totally devastated. It was difficult! Time was a problem.. What do you all think?

 

[monkeys12]

ohhhh my gosh

 

[.Sam.]

The paper was difficult, in organic section most of the A2 stuff doesn't come out, but its easy for section B though

 

[dadufahad]

Im totally devastated. It was difficult! Time was a problem.. What do you all think?

same with me..i got most of it in the 4th qs only 3 marks are wrong but 5th qs i got 4 marks wrong..i think section b was very easy..but i screwed in the 1st qs of section A..

 

[Nishii]

is chem p42 same as 43?!

 

[.Sam.]

is chem p42 same as 43?!

It depends, some year 41 and 42 same, some year 42 and 43 same, and some year 41 and 43 same.

 

[Henry930821]

Any guesses for the GT ? :/

 

[Anonymous']

Im totally devastated. It was difficult! Time was a problem.. What do you all think?

GT would be around 60, I guess..

 

[.Sam.]

Based on past gt, for paper 4, Grades to get A,
May June,
-2007 -> 64
-2008 -> 65
-2009 -> 65
-2010 -> 54
-2011 -> 59
-2012 -> 55

OCT NOV,
-2007 -> 65
-2008 -> 67
-2009 -> 64
-2010 -> 59
-2011 -> 69

gt for OCT NOV 2012 could be around 60<A<65 based on the difficulty of MJ 2012 paper and OCT NOV gt's.

 

[ninesone]

only if i memorize the pastyears that i did, i could have collected some easy / small marks. so overall it was d i f f i c u l t.

 

[dadufahad]

Based on past gt, for paper 4, Grades to get A,
May June,
-2007 -> 64
-2008 -> 65
-2009 -> 65
-2010 -> 54
-2011 -> 59
-2012 -> 55

OCT NOV,
-2007 -> 65
-2008 -> 67
-2009 -> 64
-2010 -> 59
-2011 -> 69

gt for OCT NOV 2012 could be around 60<A<65 based on the difficulty of MJ 2012 paper and OCT NOV gt's.

but wasnt this more difficult than may/june?

 

[.Sam.]

but wasnt this more difficult than may/june?

I find that May June is more about memorizing, I guess memorizing is difficult? but for me I'm more okay with memorizing.

NOTE: I found something suspicious, the MJ 41/2011 paper is similar to what OCT NOV paper set.

 

[monkeys12]

organics was so challenging in this paper

 

[Henry930821]

24 hours is over! Let's begin the discussion!

 

[jing]

the first question! about the no. of moles and the volume needed!

 

[Henry930821]

the first question! about the no. of moles and the volume needed!

Was it 15.4cm3 or something ?

 

[.Sam.]

What was the organic compound with 20+ carbons? I can't remember.
-The compound I drawn was 2 ketone groups, with 2 ester bonding, with 2 aryl group all attached together.
-The compound name start with 'c'

Can anyone guess or remember?

 

[.Sam.]

This is the compound that I roughly drawn,

 

[Henry930821]

This is the compound that I roughly drawn,

I have drawn two alkenes instead of two ester bonds because hot concentrated KMnO4 was used to break them. And in the middle of the two aryl groups it was -C=CH-CO-CH2-CO-CH=C-

 

[.Sam.]

I have drawn two alkenes instead of two ester bonds because hot concentrated KMnO4 was used to break them.

That's what I thought, they also said that this would react with 2,4-dnph, so it could be carbonyl, but ketone can't oxidize further, narrowing down the results, it could be aldehyde group.