Isomerism

Total number of isomers, considering both structural and stereoisomers, of cyclic ethers with the molecular formula $\ce{C4H8O}$ is ______

In the following reaction sequence, the correct structure(s) of X is (are)

The Fischer presentation of D-glucose is given below.

The correct structure(s) of β-L-glucopyranose is (are)

For the given compound X, the total number of optically active stereoisomers is ____.

The correct statement(s) for the following addition reactions is(are)

(i) trans-2-butene $\xrightarrow{\ce{Br2/CHCl3}}$ M and N

(ii) cis-2-butene $\xrightarrow{\ce{Br2/CHCl3}}$ O and P

3-Methyl-pent-2-ene on reaction with HBr in presence of peroxide forms an addition product. The number of possible stereoisomers for the product is :

In the following structure, the double bonds are marked as I, II, III and IV

Geometrical isomerism is not possible at site (s) :

In the following monobromination reaction, the number of possible chiral products is

(Enantiomerically pure 2-bromopentane, 1.0 mole, shown as a Fischer projection) $\xrightarrow[300\ ^\circ\mathrm C]{\ce{Br2}\ (1.0\text{ mole})}$

The absolute configuration of the compound shown is :

The total number of stereoisomers that can exist for M is

Compound(s) that on hydrogenation produce(s) optically inactive compound(s) is(are)

The structure of D-(+)-glucose is shown (Fischer projection: CHO at top; OH on the right, left, right and right at C2, C3, C4 and C5; CH₂OH at the bottom).

The structure of L-(−)-glucose is

Which of the following compounds will exhibit geometrical isomerism ?

The optically inactive compound from the following is :

Which of the following pairs of compounds are positional isomers ?

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

Consider all possible isomeric ketones, including stereoisomers, of MW = 100. All these isomers are independently reacted with $\ce{NaBH4}$ (NOTE: stereoisomers are also reacted separately). The total number of ketones that give a racemic product(s) is/are

The total number(s) of stable conformers with non-zero dipole moment for the following compound is (are)

The product X is

The correct statement with respect to product Y is