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

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MCQ Questions for Class 11 Chemistry with Answers


Q1. Which element is estimated by Carius method

(A) Carbon
(B) Hydrogen
(C) Halogen
(D) Nitrogen

(C) Halogen


Q2. Identify the chiral molecule among the following:

(A) Isopropyl alcohol
(B) 2-pentanol
(C) 1-bromo 3-butene
(D) Isobutyl alcohol

(D) Isobutyl alcohol


Q3. Which of the following physical properties differ for each of a pair of enantiomers?

(A) solubility in ethanol
(B) direction of rotation of plane-polarized light
(C) boiling point and melting point
(D) index of refraction

(B) direction of rotation of plane-polarized light


Q4. Which of the following compounds possess the C-H bond with the lowest bond dissociation energy?

(A) Toluene
(B) Benzene
(C) n-Pentane
(D) 2, 2-Dimethyl propane

(A) Toluene


Q5. 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

(A) 2- Methypentane


Q6. The displacement of electrons in a multiple bond in the presence of attacking reagent is called

(A) Inductive effect
(B) Electromeric effect
(C) Resonance
(D) Hyper conjugation.

(B) Electromeric effect


Q7. Which one of the following conformations of cyclohexane is chiral?

(A) Twist boat
(B) Rigid
(C) Chair
(D) Boat

(A) Twist boat


Q8. First organic compound to be synthesised was

(A) urea
(B) cane sugar
(C) methane
(D) acetic acid

(A) urea


Q9. Inductive effect involves

(A) displacement of σ electrons
(B) delocalization of π electrons
(C) delocalization of σ-electrons
(D) displacement of π-electrons

(A) displacement of σ electrons


Q10. 0.5 g of hydrocarbon gave 0.9 g water on combustion. The percentage of carbon in hydrocarbon is

(A) 75.8
(B) 80.0
(C) 56.6
(D) 28.6

(B) 80.0


Q11. Butanone is a four-carbon compound with the functional group –

(A) ketone
(B) carboxylic acid
(C) aldehyde.
(D) alcohol.

(A) ketone


Q12. The I.U.P.A.C. name of CH3 – CH = CH COO C2H5 is

(A) Ethyl but-1 -enoate
(B) Ethyl but-2-enoate
(C) Ethyl prop-2-enoate
(D) None of these.

(B) Ethyl but-2-enoate


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

(A) Formic Acid
(B) Acetic Acid
(C) Propionic Acid
(D) Benzoic Acid

(B) Acetic Acid


Q14. Which of the following cannot be represented by resonance structures?

(A) Dimethyl ether
(B) Nitrate anion
(C) Carboxylate anion
(D) Toluene

(A) Dimethyl ether


Q15. The displacement of electrons in a multiple bond in the presence of attacking reagent is called

(A) Inductive effect
(B) Electromeric effect
(C) Resonance
(D) Hyper conjugation

(B) Electromeric effect


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MCQ Questions for Class 11 Chemistry Chapter wise with Answers


Lesson 1. Some Basic Concepts of Chemistry Class 11 MCQ Questions
Lesson 2. Structure of Atom Class 11 MCQ Questions
Lesson 3. Classification of Elements and Periodicity in Properties Class 11 MCQ Questions
Lesson 4. Chemical Bonding and Molecular Structure Class 11 MCQ Questions
Lesson 5. States of Matter Class 11 MCQ Questions
Lesson 6. Thermodynamics Class 11 MCQ Questions
Lesson 7. Equilibrium Class 11 MCQ Questions
Lesson 8. Redox Reactions Class 11 MCQ Questions
Lesson 9. Hydrogen Class 11 MCQ Questions
Lesson 10. The s-Block Elements Class 11 MCQ Questions
Lesson 11. The p-Block Elements Class 11 MCQ Questions
Lesson 12. Organic Chemistry: Some Basic Principles and Techniques Class 11 MCQ Questions
Lesson 13. Hydrocarbons Class 11 MCQ Questions
Lesson 14. Environmental Chemistry Class 11 MCQ Questions

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