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

Organic Chemistry: Some Basic Principles and Techniques Class 11 Chemistry MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 12 Organic Chemistry: Some Basic Principles and Techniques with Answers Pdf free download. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. We have Provided Organic Chemistry: Some Basic Principles and Techniques Class 11 Chemistry MCQs Questions with Answers to help students understand the concept very well.

Class 11 Chemistry Chapter 12 Quiz

Class 11 Chemistry Chapter 12 MCQ Online Test

You can refer to NCERT Solutions for Class 11 Chemistry Chapter 12 Organic Chemistry: Some Basic Principles and Techniques to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Organic Chemistry: Some Basic Principles and Techniques Class 11 Chemistry MCQ online test

Q1.	Which among the following statement is not true?
	A.In liquid, particles are less regularly arranged and are free to move
	B.Boiling involves breaking up of group of molecules in liquid
	C.Boiling involves separation of oppositely charged ions
	D.Thermal energy of particles overcome cohesive forces that hold them

Ans: Boiling involves separation of oppositely charged ions

Q2.	Identify the chiral molecule among the following:
	A.Isopropyl alcohol
	B.2-pentanol
	C.1-bromo 3-butene
	D.Isobutyl alcohol

Ans: Isobutyl alcohol

Q3.	Which element is estimated by Carius method
	A.Carbon
	B.Hydrogen
	C.Halogen
	D.Nitrogen

Ans: Halogen

Q4.	A solution of(+) – 2 – chloro – 2 – phenylethane in toluene racemises slowly in the presence of small amounts of SbCl₅ due to the formation of
	A.Carbanion
	B.Carbene
	C.Free radical
	D.Carbocation

Ans: Carbocation

Q5.	Which of the following acids has the smallest dissociation constant?
	A.CH₃CHFCOOH
	B.FCH₂CH₂COOH
	C.BrCH₂CH₂COOH
	D.CH₃CHBrCOOH

Ans: BrCH₂CH₂COOH

Q6.	What is the correct IUPAC name of
	A.4-methoxy-2-nitrobenzaldehyde
	B.4-formyl-3-nitro anisole
	C.4-methoxy-6-nitrobenzaldehyde
	D.2-formyl-5-methoxy nitrobenzene

Ans: 4-methoxy-2-nitrobenzaldehyde

Q7.	0.5 g of hydrocarbon gave 0.9 g water on combustion. The percentage of carbon in hydrocarbon is
	A.75.8
	B.80
	C.56.6
	D.28.6

Ans: 80

Q8.	0.92 g of an organic compound was analysed by combustion method. The mass of the U- tube increased by 1.08 g. What is the percentage of hydrogen in the compound?
	A.0.1304
	B.0.5217
	C.0.6521
	D.0.113

Ans: 0.1304

Q9.	What is the state of hybridisation of carbon in carbanion?
	A.sp
	B.sp²
	C.sp³
	D.sp²d.

Ans: sp³

Q10.	An organic compound contains C = 38.8 H = 16 and N = 45.2. Empirical formula of the compound is
	A.CH₃NH₂
	B.CH₃CN
	C.C₂H₅CN
	D.CH₂(NH)₂

Ans: CH₃NH₂

Q11.	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

Ans: Acetic Acid

Q12.	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

Ans: Electromeric effect

Q13.	The molecular formula C₅H₁₂ contains how many isomeric alkanes?
	A.1
	B.2
	C.3
	D.4

Ans: 3

Q14.	If two compounds have the same empirical formula but different molecular formula they must have
	A.Different percentage composition
	B.Different molecular weight
	C.Same viscosity
	D.Same vapour density

Ans: Different molecular weight

Q15.	Inductive effect involves
	A.displacement of σ electrons
	B.delocalization of π electrons
	C.delocalization of σ-electrons
	D.displacement of π-electrons

Ans: displacement of σ electrons

Q16.	A gas mixture contains 50% helium and 50% methane by volume. What is the percent by weight of methane in the mixture
	A.0.75
	B.0.5
	C.0.8003
	D.0.1997

Ans: 0.8003

Q17.	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