Q. The correct statement(s) about the compound $\mathrm{H}_{3} \mathrm{C}$ (HO)HC – CH = CH – CH(OH) $\mathrm{CH}_{3}$ (X) is (are) :
(A) The total number of stereoisomers possible for X is 6
(B) The total number of diastereomers possible for X is 3
(C) If the stereochemistry about the double bond in X is trans, the number of enantiomers possible for X is 4
(D) If the stereochemistry about the double bond in X is cis, the number of enantiomers possible for X is 2
[iit-2009]
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Sol. (A,D)
Q. In the Newman projection for 2,2–dimethylbutane –
X and Y can respectively be –
(A) H and H
(B) $\mathrm{H}$ and $\mathrm{C}_{2} \mathrm{H}_{5}$
(C) $\mathrm{C}_{2} \mathrm{H}_{5}$ and $\mathrm{H}$
(D) $\mathrm{CH}_{3}$ and $\mathrm{CH}_{3}$
[iit-2010]
X and Y can respectively be –
(A) H and H
(B) $\mathrm{H}$ and $\mathrm{C}_{2} \mathrm{H}_{5}$
(C) $\mathrm{C}_{2} \mathrm{H}_{5}$ and $\mathrm{H}$
(D) $\mathrm{CH}_{3}$ and $\mathrm{CH}_{3}$
[iit-2010]
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Sol. (B,D)
Q. Amongst the given option, the compound(s) in which all the atoms are in one plane in all the possible conformations (if any), is (are) –
[iit-2011]
[iit-2011]
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Sol. (B,C)
Q. Which of the given statement(s) about N,O,P and Q with respect to M is (are) correct ?
(A) M and N are non-mirror image stereoisomers
(B) M and O are identical
(C) M and P are enantiomers
(D) M and Q are identical
[JEE-2012]
(A) M and N are non-mirror image stereoisomers
(B) M and O are identical
(C) M and P are enantiomers
(D) M and Q are identical
[JEE-2012]
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Sol. (A,B,C)
Q. The total number(s) of stable conformers with non-zero dipole moment for the following compound is (are) :
[JEE-2014]
[JEE-2014]
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NICE TEN MINUTES PROPLEM SOLVING PRACTICE
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