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chem mcq

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AN10:
someone plz explain to me MCQ 19 and 21 of oct/nov 09 p11

nid404:
upload the paper plz...my file's corrupted :(

AN10:
here is da paper

nid404:
Q19)
 ammonium is NH4 +
so cyanate will have 1- charge...B is ruled out
cyanide is CN-
cyanate will be oxidised cyanide......hence CNO-
A

21)

Total no of double bonds
3 in the cyclohexane ring
1 in the aldehyde (C=O)
1 is the alkene C=C between C11 and C12

so total of 5

cis isomer has the higher groups(R) on the same side.

Hence A

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