Chapter 8: Organic Chemistry Some Basic Principles and Techniques — Online MCQ Test
CHEMISTRY · CLASS 11 FIRST PUC · Karnataka State Board
Practice Chapter 8: Organic Chemistry Some Basic Principles and Techniques with a free chapter-wise online MCQ test.
This chapter covers: IUPAC nomenclature Isomerism Functional group Homolytic cleavage Heterolytic cleavage Inductive effect Resonance Hyperconjugation Electrophile Nucleophile Carbocation Carbanion.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter 8: Organic Chemistry Some Basic Principles and Techniques — Important Questions & Answers
Which of the following is the correct IUPAC name for CH3CH2CH2OH?
- A. Methanol
- B. Propan-1-ol
- C. Propan-2-ol
- D. Ethoxy methane
Answer: B. Propan-1-ol
The longest chain has three carbon atoms and the hydroxyl group is on carbon 1, so the name is propan-1-ol.
The longest chain has three carbon atoms and the hydroxyl group is on carbon 1, so the name is propan-1-ol.
The functional group present in aldehydes is:
- A. -OH
- B. -COOH
- C. -CHO
- D. -O-
Answer: C. -CHO
Aldehydes contain the formyl group, written as -CHO.
Aldehydes contain the formyl group, written as -CHO.
A compound with molecular formula C4H10 has how many structural isomers?
- A. 1
- B. 2
- C. 3
- D. 4
Answer: B. 2
C4H10 has two structural isomers: n-butane and isobutane (2-methylpropane).
C4H10 has two structural isomers: n-butane and isobutane (2-methylpropane).
Which carbocation is most stable?
- A. CH3+
- B. CH3CH2+
- C. (CH3)2CH+
- D. (CH3)3C+
Answer: D. (CH3)3C+
Tertiary carbocations are most stable due to maximum hyperconjugation and electron donation by alkyl groups.
Tertiary carbocations are most stable due to maximum hyperconjugation and electron donation by alkyl groups.
Which of the following compounds will show the maximum number of isomers among the given molecular formulas?
- A. C3H8
- B. C4H10
- C. C5H12
- D. C2H6
Answer: C. C5H12
Among these, C5H12 has the maximum number of structural isomers, which is three.
Among these, C5H12 has the maximum number of structural isomers, which is three.