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Chemistry: Post your doubts here!

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Q39
ok here goes you see the 3 options given right? look closely at the 3rd option.. umm just open the file attached, it should make sense.. if it doesnt :p all you have to do is ask :p
bro solve my query pls :/ cannot get it right :/
 
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k wat abt may june 2006 q10
tmlaWmc.jpg
 
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Q39
ok here goes you see the 3 options given right? look closely at the 3rd option.. umm just open the file attached, it should make sense.. if it doesnt :p all you have to do is ask :p

Thankyou sooooooooooooooooooooooooooooooooooo much !!!:) your explanation is quite clear...:D
 
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Okay thing about Q 26 is you have to form reaction intermediates right?
i'm going to focus on why B (W and Y) is the correct answer.
W = CH3CH2CH3
Y = CH3CH=CH2

with W you react it with Br2 and you get a bromo-alkane with 3 carbons,
same as when you react Y with HBr you get the same bromo-alkane..

if you want more explanation regarding anything.. please ask,
sorry i'm feeling a bit too lazy to do all the working :p
 
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looking at first choice .. it says its saturated (no double bond-alkane) and diol ( 2 OH group)
it has 4 carbon ,, you know alkane with 4 carbon (butane) has formula C4H8 ..
in this case replace 2 hydrogen with OH group (since its diol)
this gives you C4H6 (OH)2 which has molecular formula of 90 ...
since one is wrong ... answer is C
 
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density = mass/ volume , so mass will be density multiply by volume.. and volume was in cm^3 so convert it to dm3... but if u dont want to, anyways u'll have to divide it by 1000 to change grams into kilograms..
oh ok thanks , so the ideal gas equation can actually be used for any gas ?
 
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