In This Post we are providing Chapter-5 Organic Chemistry- Some Basic Principles and Techniques NCERT MCQ for Class 11 Chemistry which will be beneficial for students. These solutions are updated according to 2021-22 syllabus. These MCQS can be really helpful in the preparation of Board exams and will provide you with a brief knowledge of the chapter.
NCERT MCQ ON ORGANIC CHEMISTRY- SOME BASIC PRINCIPLES AND TECHNIQUES
Question 1: In laboratory, first organic compound was synthesized by
- a) Wohler
- b) Kekule
- c) Hennel
- d) Liebig
Answer: Wohler
Question 2: Who is known as the “Father of Chemistry”?
- a) Lavoisier
- b) Priestley
- c) Faraday
- d) Rutherford
Answer: Lavoisier
Question 3: The percentage of s- character of the hybrid orbitals in ethane, ethene and ethyne are respectively
- a) 25, 33, 50
- b) 50, 75, 100
- c) 25, 50, 75
- d) 10, 20, 40
Answer: 25, 33, 50
Question 4: The functional group present in organic, acid is –
- a) –COOH
- b) – OH
- c) – CHO
- d) > C = O
Answer: –COOH
Question 5: Which of these contains the carbonyl group?
- a) all of these
- b) aldehydes
- c) ketones
- d) esters
Answer: all of these
Question 6: Butanone is a four-carbon compound with the functional group –
- a) ketone
- b) carboxylic acid
- c) aldehyde.
- d) alcohol.
Answer: ketone
Question 7: Which of the following compounds contains 1°, 2°, 3° as well as 4° carbon atoms ?
- a) 2,2,3-trimethyl pentane
- b) 2-methyl pentane
- c) Neopentane
- d) 2,3-dimethyl butane
Answer: 2,2,3-trimethyl pentane
Question 8: The number of secondary hydrogens in 2, 2-dimethylbutane is
- a) 2
- b) 6
- c) 8
- d) 4
Answer: 2
Question 9: The compound which has one isopropyl group is
- a) 2- Methypentane
- b) 2, 2, 3- Trimethylpentane
- c) 2, 2 – Dimethylpentane
- d) 2, 2, 3, 3 – Tetramethylpentane
Answer: 2- Methypentane
Question 10: Which of the following statements is false for isopentane ?
- a) It has a carbon which is not bonded to hydrogen
- b) It has one CH group
- c) It has one CH2 group
- d) It has three CH3 groups
Answer: It has a carbon which is not bonded to hydrogen
Question 11: The number of primary, secondary and tertiary carbons in 3, 4-dimethylheptane are respectively
- a) 4, 3 and 2
- b) 4, 2 and 3
- c) 2, 3 and 4
- d) 3, 4 and 2
Answer: 4, 3 and 2
Question 12: The number of primary, secondary, tertiary and quaternary carbons in neopentane are respectively
- a) 4, 0, 0 and 1
- b) 4, 3, 2 and 1
- c) 5, 0, 0 and 1
- d) 4, 0, 1 and 1
Answer: 4, 0, 0 and 1
Question 13: What is the IUPAC name of t-butyl alcohol.
- a) 2–Methyl-propan–2-ol
- b) Propanol-2
- c) Butanol–2
- d) Butanol–1
Answer: 2–Methyl-propan–2-ol
Question 14: The IUPAC name of CH3COCH (CH3)2 is –
- a) 3-methyl-2-butanone
- b) 4-methylisopropyl ketone
- c) 2-methyl-3-butanone
- d) isopropyl methyl ketone
Answer: 3-methyl-2-butanone
Question 15: Which of the following statements is false for isopentane–
- a) It has a carbon which is not bonded to hydrogen
- b) It has one CH group
- c) It has three CH3 groups
- d) It has one CH2 group
Answer: It has a carbon which is not bonded to hydrogen
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