Two possible stereo-structures of CH₃CHOH.COOH, that are optically active, called:

Which of the following compounds will exhibit cis-trans (geometrical) isomerism?

1. 2-butene

2. Butanol

3. 2-butyne

4. 2-butenol

If there is no rotation of plane-polarized light by a compound in a specific solvent thought to be chiral, it may mean that:

1. The compound is certainly a chiral.

2. The compound is certainly meso.

3. There is no compound in the solvent.

4. The compound may be a racemic mixture.

The number of chiral carbons in β–D–(+)– glucose is:

1. Six

2. Three

3. Four

4. Five 

Which pair among the following is a pair of enantiomers:

1.
2.
3.
4.

Geometrical isomers differ in:

1. Position of the functional group.

2. Position of atoms.

3. Spatial arrangement of atoms.

4. Length of the carbon chain.

2-Butene shows geometrical isomerism due to:

1. Restricted rotation about double bond

2. Free rotation about double bond

3. Free rotation about single bond

4. Chiral carbon

The chiral compound among the following is:

The chiral centre is absent in:

1. DCH₂-CH₂-CH₂-Cl

2. CH₃-CHD-CH₂-Cl

3. CH₃-CHCl-CH₂D$\mathrm{<mspace\; width="1em"></mspace>\; <mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>}$

4. CH₃-CHOH-CH₂-CH₃