Organic Chemistry: Some Basic Principles and Techniques MCQ Questions for Class 11 Chemistry Chapter 12 with Answers

We have completed the NCERT/CBSE chapter-wise Multiple Choice Questions for Class 11 Chemistry book Chapter 12 Organic Chemistry: Some Basic Principles and Techniques with Answers by expert subject teacher for latest syllabus and examination. You can Prepare effectively for the exam taking the help of the Class 11 Chemistry Objective Questions PDF free of cost from here. Students can take a free test of the Multiple Choice Questions of Organic Chemistry: Some Basic Principles and Techniques. Each Questions has four options followed by the right answer. Download the Chemistry Quiz Questions with Answers for Class 11 free Pdf and prepare to exam and help students understand the concept very well.

MCQ Questions for Class 11 Chemistry with Answers

Q1. Identify the chiral molecule among the following:

(i) Isopropyl alcohol
(ii) 2-pentanol
(iii) 1-bromo 3-butene
(iv) Isobutyl alcohol

(iv) Isobutyl alcohol

Q2. Which of the following compounds possess the C-H bond with the lowest bond dissociation energy?

(i) Toluene
(ii) Benzene
(iii) n-Pentane
(iv) 2, 2-Dimethyl propane

(i) Toluene

Q3. The displacement of electrons in a multiple bond in the presence of attacking reagent is called

(i) Inductive effect
(ii) Electromeric effect
(iii) Resonance
(iv) Hyper conjugation.

(ii) Electromeric effect

Q4. First organic compound to be synthesised was

(i) urea
(ii) cane sugar
(iii) methane
(iv) acetic acid

(i) urea

Q5. 0.5 g of hydrocarbon gave 0.9 g water on combustion. The percentage of carbon in hydrocarbon is

(i) 75.8
(ii) 80.0
(iii) 56.6
(iv) 28.6

(ii) 80.0

Q6. The I.U.P.A.C. name of CH3 – CH = CH COO C2H5 is

(i) Ethyl but-1 -enoate
(ii) Ethyl but-2-enoate
(iii) Ethyl prop-2-enoate
(iv) None of these.

(ii) Ethyl but-2-enoate

Q7. Which of the following cannot be represented by resonance structures?

(i) Dimethyl ether
(ii) Nitrate anion
(iii) Carboxylate anion
(iv) Toluene

(i) Dimethyl ether

Q8. In laboratory, first organic compound was synthesised by

(i) Wohler
(ii) Kekule
(iii) Hennel
(iv) Liebig

(i) Wohler

Q9. What is the state of hybridisation of carbon in carbanion?

(i) sp
(ii) sp²
(iii) sp³
(iv) sp²d.

(iii) sp³

Q10. Insulin contains 3.4% sulphur. The minimum molecular weight of insulin is

(i) 350
(ii) 470
(iii) 560
(iv) 940

(iv) 940

Q11. The percentage of s- character of the hybrid orbitals in ethane, ethene and ethyne are respectively

(i) 25, 33, 50
(ii) 50, 75, 100
(iii) 25, 50, 75
(iv) 10, 20, 40

(i) 25, 33, 50

Q12. The displacement of electrons in a multiple bond in the presence of attacking reagent is called

(i) Inductive effect
(ii) Electromeric effect
(iii) Resonance
(iv) Hyper conjugation

(ii) Electromeric effect

Q13. 59 g of an amide obtained from a carboxylic acid, RCOOH, liberated 17 g of ammonia upon heating with alkali. The acid is

(i) Formic Acid
(ii) Acetic Acid
(iii) Propionic Acid
(iv) Benzoic Acid

(ii) Acetic Acid

Q14. Butanone is a four-carbon compound with the functional group –

(i) ketone
(ii) carboxylic acid
(iii) aldehyde.
(iv) alcohol.

(i) ketone

Q15. Inductive effect involves

(i) displacement of σ electrons
(ii) delocalization of π electrons
(iii) delocalization of σ-electrons
(iv) displacement of π-electrons

(i) displacement of σ electrons

Q16. Which one of the following conformations of cyclohexane is chiral?

(i) Twist boat
(ii) Rigid
(iii) Chair
(iv) Boat

(i) Twist boat

Q17. The compound which has one isopropyl group is

(i) 2- Methypentane
(ii) 2, 2, 3- Trimethylpentane
(iii) 2, 2 – Dimethylpentane
(iv) 2, 2, 3, 3 – Tetramethylpentane

(i) 2- Methypentane

Q18. Which of the following physical properties differ for each of a pair of enantiomers?

(i) solubility in ethanol
(ii) direction of rotation of plane-polarized light
(iii) boiling point and melting point
(iv) index of refraction

(ii) direction of rotation of plane-polarized light

Q19. Which element is estimated by Carius method

(i) Carbon
(ii) Hydrogen
(iii) Halogen
(iv) Nitrogen

(iii) Halogen

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MCQ Questions for Class 11 Chemistry Chapter wise with Answers

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