Free Isomerism MCQs with Answers

• A. 1-butene
• B. 1-hexene
• C. 1-bromo-2-chloropropene
• D. Propene

Explanation: Explanation:1-bromo-2-chloropropene has two different groups (bromo and chloro) attached to the double bond, allowing for the possibility…

• A. Cis-trans isomerism
• B. Chain isomerism
• C. Position isomerism
• D. Functional group isomerism

Explanation: Positional isomers are constitutional isomers that have the same carbon skeleton and the same functional groups but differ from each other…

• A. Option A: 1-butene
• B. Option B: 2-butene (trans)
• C. Option C: 2-butene (cis)
• D. Option D: Cyclohexane

Explanation: In the context of alkenes, cis-isomerism occurs when two identical or similar groups are on the same side of a double bond.

• A. A
• B. B
• C. C
• D. D

Explanation: Isomers are those compounds that have diff structures but the same molecular formula, which is the case in A only, they form cis- trans…

• A. CHCl=CCl2 and CH2=CH
• B. CHCl=CH2 and CH2=CHCl
• C. CH3CH=CHCH3 and H3CCH=CHCH3
• D. CH3CH3 and CH2=CH

Explanation: For geometric isomers, the basic conditions are Alternative groups are present in our carbons atoms There should be a carbon-carbon double…

• A. Chain isomerism
• B. Position isomerism
• C. Cis-Trans isomerism
• D. Optical isomerism

Explanation: In chain isomerism, the molecular formula of the isomers is same but they differ in the carbon chain or carbon skeleton.

• A. 5
• B. 3
• C. 4
• D. 2

Explanation: Butane is an alkane with four carbon atoms so the molecular formula is C4H10. It has two isomers; n-butane and isobutane.

• A. C2H4
• B. C2H2Cl4
• C. C2H2Br2
• D. C2HCl3

Explanation: For cis-trans isomerism, the rotation must be restricted in the molecule (so, cannot occur in compounds that only have C-C single bonds)…

• A. Position isomerism
• B. Functional group isomerism
• C. Chain isomerism
• D. All of above

Explanation: Position isomerism: C2H11OH, which represents a molecule with two carbon atoms, exhibits position isomerism.

• A. CH3OH
• B. C2H5OCH3
• C. CH3OCH3
• D. C2H5OC2H5

Explanation: CH3OCH3 is an isomer of ethanol. It is called dimethyl ether, which has the same molecular formula as ethanol but a different structural…

• A. Chain isomerism
• B. Structural isomerism
• C. Geometrical isomerism
• D. Position isomerism

Explanation: Geometric isomers possess the same structural formula containing a double bond and differ only in respect of the arrangements about the…

• A. Chain isomers
• B. Position isomers
• C. Functional group isomers
• D. Both (A) and (B)

Explanation: Functional group isomers differ in the functional groups within their structures, leading to distinct chemical reactions and variations in…

• A. Conformational isomers
• B. Metamers
• C. Geometrical isomers
• D. Enantiomers

Explanation: Metamers are the compounds having the same molecular formula but different position of atoms or groups on the either side of bridging…

• A. Structural
• B. Optical
• C. Stereo
• D. None of the above

Explanation: Stereoisomers are isomers that have the same composition (that is, the same parts) but that differ in the orientation of those parts in…

• A. 2
• B. 4
• C. 5
• D. 3

Explanation: Pentane (C5H12) is an organic compound with five carbon atoms. Pentane has three isomers that are n-pentane, Iso-pentane (methyl butane)…

• A. Metamerism
• B. Optical isomerism
• C. Tautomerism
• D. None

Explanation: It gives metamerism which is when compounds having the same molecular formula but different alkyl groups on either side of functional…

• A. 2
• B. 4
• C. 8
• D. 5

Explanation: For the chemical formula C2H6O, which represents an alcohol (ethanol), there are 8 isomeric structures possible.