Organic Isomers

Isomerism that arises out of the difference in spatial arrangement of atoms or groups about the doubly bonded carbon atoms are called?

• Structural Isomerism

• Stereoisomerism

• Geometrical Isomerism

• Optical Isomerism

Which among the following does not exhibit geometric isomerism?

• 1-hexene

• 2-hexene

• 3-hexene

• 4-hexene

Which statement best defines chain isomerism?

• Existance of chemical compounds with same molecular formula

• Different ways the same number of carbons are connected which is either straight or branched

• Have mirror image of each other

• Similar chemical properties with different physical properties such as solubility

How to determine that a molecule exhibit cis-trans isomerism?

• Restricted rotation in a carbon-carbon single bond of alkenes

• Each carbon of a site of restricted rotation has 2 different atoms or groups attached to it

• Exist in cyclic compouds only

• Similar chemical properties

Two optical isomers have the same

• Empirical formula

• Structural formula

• Molecular formula

Which of the following molecules exhibit geometrical isomerism?

• CH₂=CHCH₃

• C₆H₅CH=CHC₆H₅

• (CH₃)₂C=CHCH₃

• CH₃CH₂N=OH

Butan-1-ol and Butan-2-ol exhibit ................isomerism

Isomerism exhibited by acetic acid and methyl formate is

• position

• chain

• functional

• metamerism

Define chirality centre

• also known as chiral carbon

• a type of enantiomer

• a sp3 hybridised carbon with four different groups or atoms attached to it

• optically active compounds

Can enantiomer rotates plane-polarised light?

• Yes in all situations

• No because it is optically active

• Yes but it can only rotate the polarised light in opposite direction

• No due to its restricted rotation of carbon-carbon double bond