Physical Pharmaceutics 2 Quiz

Cis-trans isomers are:

Diastereomers

Cis-trans isomers are:

Geometric isomers

Constitutional isomers

Which of the following moleculecPyrrolidine?

(2R,3R)-2,3-Dichlorpentane

(2S,4R)-2,4-Dichlorpentane

(2S,4S)-2,4-Dichlorpentane

(2R,3S)-2,3-Dichlorpentane

Which statement is not true for a meso compound?

The specific rotation is 0°

There are one or more planes of symmetry

The stereo chemical labels, (R) and (S), must be identical for each

More than one stereogenic center must be present.

4. In the absence of specific data, it can only be said that (R)—2—bromopentane is

Chiral.

Dextrorotatary (+)

Levorotatary (-)

Optically inactive

Enantiomers are:

Molecules that have at least one stereogenic center.

Non-superposable molecules.

Non-superposable molecules that are mirror images of each other.

Molecules that have a mirror image.

Which of the following is not true of enantiomers? They have have same:

Boiling point.

Density

Specific rotation.

Melting point.

A mixture of equal amounts of two enantiomer _________

Is called a racemic mixture.

Implies that the enantiomers are meso forms.

Is optically inactive.

Both A and B

Which of the following statements is (are) true for the compound (3R,4R)-3,4-dimethylhexane?

This compound is chiral.

This compound has an enantiomers.

This compund is optically active.

All of the above.

How many assymetric carbon are present in the following compound?

A beam of light having a particular wavelength and having vibrations only in one plane is _____

Monochromatic light

None of the above

Ordinary light

Plane polarized light

Which instrument is used to measure angle of rotation?

Polarimeter

UV spectrometer

Conductometer

PH meter

Following are types of optical isomers except_______

Enantiomers

Meso compounds

Diastereomers

Conformers

Which is the true option for Diastereomers?

They have only one chiral centre.

They have identical physical properties.

They have two or more chiral centre.

All of the above

Absolute configuration of stereoisomer is denoted by:

R and S isomers

D and L isomers

Cis and trans isomers

D and I isomers

Relative configuration of stereoisomer is denoted by:

R and S isomers

D and L isomers

Cis and trans isomers

D and I isomers

Most stable conformation of cyclohexane is__________

Boat conformation

Chair conformation

Twist boat conformation

Half chair conformation

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