The well-known compounds, $(+)$-lactic acid and $(-)$-lactic acid, have the same molecular formula, $C_{3}H_{6}O_{3}$. The correct relationship between them is

Ignoring specific markings,which of the following objects are chiral?
$(I)$ $A$ shoe
$(II)$ $A$ book
$(III)$ $A$ pencil
$(IV)$ $A$ pair of shoes (consider the pair as one object)
$(V)$ $A$ pair of scissors

The property by virtue of which a compound can rotate the plane of plane-polarized light is known as:

The optically active tartaric acid is named $D-(+)$ tartaric acid because it is related to $D-(+)$ glyceraldehyde in terms of:

Which of the following alkenes exhibits optical isomerism?

The concentration of an organic compound in chloroform is $6.15 \ g$ per $100 \ mL$ of solution. $A$ portion of this solution in a $5 \ cm$ polarimeter tube causes an observed rotation of $-1.2^{\circ}$. What is the specific rotation of the compound?