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Guys post all questions regarding chemistry MCQ's... I'll try to explain as much as i can... But all help would be appreciated....
So start posting chemistry questions
So start posting chemistry questions
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Guys post all questions regarding chemistry MCQ's... I'll try to explain as much as i can... But all help would be appreciated....
So start posting chemistry questions
Good job !
So we'll start from June 2002 and we'll end to June 2012 with all its variants.
The work solutions will be posted here.
How much papers we'll do per day ?
June 2002Just post the questions and we'll do as many as we can
I hope it would be better it we could solve each past papers and post the solutions for each questions possible out here on the yearly basis as some of the folks did during their preparation for Physics during this May/June session. It would benefit a lot of people out there. I know its a lot of time consuming but its just a suggestion from me, don't take it in the wrong sense. I am also ready to contribute as much as I can and not only me but I guess other people will also join us and put their effort in this novel work.
So are there any doubts regarding the P1 chemistry paper?
So, let's get started with May/June 2002.Agreed !
I'll post for P5 also..
I thought this thread was about P1? :0
I have posted my question regarding P1 in another thread, but I'll post it here too. this question bothers me a lot, I don't understand!
Cyanohydrins can be made from carbonyl compounds by generating CN–ions from HCN in the presence of a weak base.
In a similar reaction, –CH2CO2CH3 ions are generated from CH3CO2CH3 by strong bases. Which compound can be made from an aldehyde and CH3CO2CH3 in the presence of a strong base?
A CH3CH(OH)CO2CH3
B CH3CO2CH2CH(OH)CH3
C CH3CH2CH(OH)CH2CO2CH3
D (CH3)2C(OH)CH2CO2CH3
I understand how A is impossible, but what about B, C, and D? they only differ in the arrangement and number of carbon atoms, while the question does not specify what is the aldehyde.
an explanation is greatly appreciated.
if you wonder from which year is it, it is from ON2009.
could anyone help me with this ! Actually, i was goin on serially with the Chem MCQ as in xtremepapers ! Did MJ2003 ! This is from MJ2004 !
Q. 26, 27 , 33 , 35 ..
These are the ones i made mistake !
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