Isomerism

The reagent needed for converting $\ce{Ph-C#C-Ph}$ into trans-stilbene ($\ce{PhCH=CHPh}$, the two Ph groups on opposite sides of the double bond) is :

Which one of the following acids does not exhibit optical isomerism ?

A tetrapeptide has -COOH group on alanine. This produces glycine (Gly), valine (Val), phenyl alanine (Phe) and alanine (Ala), on complete hydrolysis. For this tetrapeptide, the number of possible sequences (primary structures) with $\ce{-NH2}$ group attached to a chiral center is

Compounds formed from P and Q are, respectively

The number of optically active products obtained from the complete ozonolysis of the given compound is

When the following aldohexose exists in its D-configuration, the total number of stereoisomers in its pyranose form is
$$\ce{OHC-CH2-CH(OH)-CH(OH)-CH(OH)-CH2OH}$$

With reference to the scheme given, which of the given statement(s) about T, U, V and W is (are) correct?

Which of the given statement(s) about N, O, P and Q with respect to M is (are) correct?

Amongst the given options, the compound(s) in which all the atoms are in one plane in all the possible conformations (if any), is (are)

The total number of alkenes possible by dehydrobromination of 3-bromo-3-cyclopentylhexane using alcoholic KOH is

The maximum number of isomers (including stereoisomers) that are possible on mono-chlorination of the following compound, is

In the Newman projection for 2,2-dimethylbutane, X and Y can respectively be

The total number of cyclic isomers possible for a hydrocarbon with the molecular formula $\ce{C4H6}$ is

The correct statement(s) about the compound $\ce{H3C(HO)HC-CH=CH-CH(OH)CH3}$ (X) is(are)

The total number of cyclic structural as well as stereo isomers possible for a compound with the molecular formula $\ce{C5H10}$ is

The correct statement(s) about the compound given below is (are)

The correct statement(s) concerning the structures E, F and G is (are)

The structure of compound I is

The number of structural isomers for $\ce{C6H14}$ is

The number of stereoisomers obtained by bromination of trans-2-butene is