Carbonyl CompoundHard
Question
Let 
Then Sn can take value(s)
Then Sn can take value(s)Options
A.1056
B.1088
C.1120
D.1332
Solution
Sn = -12 - 22 + 32 + 42 - 52 - 62 + 72 + 82 .........
Sn = (32 - 12) + (42 - 22) + ............
Sn = 2(1 + 2 + 3 +........ + 4n)
Sn = 4n(4n + 1)
Sn = 4n(4n + 1) = 1056 is possible when n = 8
4n (4n + 1) = 1088 not possible
4n(4n + 1) = 1120 not possible
4n(4n + 1) = 1332 possible when n = 9.
Sn = (32 - 12) + (42 - 22) + ............
Sn = 2(1 + 2 + 3 +........ + 4n)
Sn = 4n(4n + 1)
Sn = 4n(4n + 1) = 1056 is possible when n = 8
4n (4n + 1) = 1088 not possible
4n(4n + 1) = 1120 not possible
4n(4n + 1) = 1332 possible when n = 9.
Create a free account to view solution
View Solution FreeMore Carbonyl Compound Questions
An aldehyde isomeric with allyl alcohol gives phenyl hydrazone. Pick out a ketone that too gives a phenyl hydrazone cont...On being treated with HCl, acetone gives:...CH3CHO and C6H5CH2CHO can be distinguished chemically by...Acetophenone can be obtained by the distillation of:...Consider the following reaction: The product ′A′ is...