Isomer

Isomers refer to compounds with the same _____ but different structures or different arrangements of atoms.

• empirical formula

• molecular formula

• physical properties

• chemical properties

What is the relationship between the two compounds?

• enantiomers

• structural isomers

• identical

• cis-trans isomers

How many chiral centres are there in carotene?

• 0

• 1

• 2

• 4

This compound is found in lemon. What is NOT correct about it?

• It shows cis-trans isomerism.

• It has no chiral carbons.

• Hydrogen bonds exist among its molecules.

• It decolorizes Br₂(aq) .

What is NOT true about CH₃CH(OH)Br and its enantiomer?

• They have different boiling points.

• They are chiral molecules.

• They are optically active.

• They are polar.

X is CHBr=CHCl

What is true about X?

• A:

  X gains optical activity after reacting with Br₂ (in CCl₄).

• B:

  X loses cis-trans isomerism after reacting with Br₂ (in CCl₄).

• Both A and B

• None of the above

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D