Total number of stereo-isomers possible for the following compound is
$8$
$16$
$32$
$64$
$L$-isomer of tetrose $X \left( C _4 H _8 O _4\right)$ gives positive Schiff's test and has two chiral carbons. On acetylation. ' $X$ ' yields triacetate. ' $X$ ' also undergoes following reactions
$' A ^{\prime} \stackrel{ HNO _3}{\longrightarrow} X ^{\prime} \stackrel{ NaBH _4}{\longrightarrow} \underset{\text { Chiral compound }}{\text { } B ^{}}$ $X$ is $.......$.
The Fischer projection of $D$-erythrose is shown below.
(image)
$D$-Erythrose and its isomers are listed as $P , Q , R$, and $S$ in Column-$I$. Choose the correct relationship of $P , Q , R$, and $S$ with D-erythrose from Column $II$.
(image)
Which of the following show optical isomersim
In which structure central carbon ($C-3$) not chiral centre ?
The following pair of compounds is best described as