MCQ Questions for Class 11 Chemistry Chapter 13 Hydrocarbons with Answers

Hydrocarbons Class 11 Chemistry MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 13 Hydrocarbons with Answers Pdf free download. MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. We have Provided Hydrocarbons Class 11 Chemistry MCQs Questions with Answers to help students understand the concept very well.

Class 11 Chemistry Chapter 13 Quiz

Class 11 Chemistry Chapter 13 MCQ Online Test

You can refer to NCERT Solutions for Class 11 Chemistry Chapter 13 Hydrocarbons to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Hydrocarbons Class 11 Chemistry MCQ online test

Q1.	Which of the following compounds will exhibit geometrical isomerism?
	A.1 – Phenyl – 2 – butene
	B.3 – Phenyl – 1 – butene
	C.2 – Phenyl – 1 butene
	D.1, 1 – Diphenyl – propene.

Ans: 1 – Phenyl – 2 – butene

Q2.	Hydrocarbon containing following bond is most reactive
	A.C ≡ C
	B.C = C
	C.C – C
	D.All of these

Ans: C≡C

Q3.	A gas decolourised by KMno4 solution but gives no precipitate with ammoniacal cuprous chloride is
	A.Ethene
	B.Propane
	C.Propene
	D.Methane

Ans: Ethene

Q4.	A dibromo derivative of an alkane reacts with sodium metal to form an alicyclic hydrocarbon. The derivative is _______
	A.1, 4-dibromobutane
	B.1, 2-dibromoethane
	C.carbon
	D.none of the above

Ans: 1, 4-dibromobutane

Q5.	Reaction of HBr with propene in the presence of peroxide gives:
	A.3 – Bromo propane
	B.Allyl bromide
	C.n – Propyl bromide
	D.Isoproyl bromide

Ans: n – Propyl bromide

Q6.	Which branched chain isomer of the hydrocarbon with molecular mass 72u gives only one isomer of mono substituted alkyl halide?
	A.Neopentane
	B.Carbon
	C.Isohexane
	D.Neohexane

Ans: Neopentane

Q7.	Aromatic compounds burn with a sooty flame because?
	A.They have a ring structure of carbon atoms
	B.They have a relatively high percentage of hydrogen
	C.They have a relatively high percentage of carbon
	D.They resist reaction with oxygen of air

Ans: They have a relatively high percentage of carbon

Q8.	The lowest alkene, that is capable of exhibiting geometrical isomerism is
	A.Ethene
	B.But – 1- ene
	C.But – 2 – ene
	D.Propene

Ans: But – 2 – ene

Q9.	Which one of these is NOT TRUE for benzene?
	A.Heat of hydrogenation of benzene is less than the theoretical value
	B.There are three carbon-carbon single bonds and three carbon-carbon double bonds
	C.It forms only one type of monosubstituted product
	D.The bond angle between carbon-carbon bonds is 120o

Ans: There are three carbon-carbon single bonds and three carbon-carbon double bonds

Q10.	Ethyl benzene cannot be prepared by _____.
	A.Wurtz Reaction
	B.Wurtz Fittig reaction
	C.Clemmensen Reduction
	D.Carbon

Ans: Wurtz Reaction

Q11.	Propyne on polymerization yields
	A.Mesitylene
	B.Benzene
	C.Ethyl benzene
	D.Propyl benzene.

Ans: Mesitylene

Q12.	A gas decolourised by KMno4 solution but gives no precipitate with ammoniacal cuprous chloride is
	A.Ethene
	B.Propane
	C.Propene
	D.Methane

Ans: Ethene

Q13.	Among the following compounds the one that is most reactive towards electrophilic nitration is
	A.Toluene
	B.Benzene
	C.Benzoic Acid
	D.Nitrobenzene

Ans: Toluene

Q14.	HBr reacts with CH₂ = CH – OCH₃ under anhydrous conditions at room temperature to give
	A.CH₃CHO and CH₃Br
	B.BrCH₂CHO and CH₃OH
	C.BrCH₂ – CH₂ – OCH₃
	D.H₃C – CHBr – OCH₃

Ans: H₃C – CHBr – OCH₃

Q15.	The angle strain in cyclobutane is
	A.24°44
	B.29°16
	C.19°22
	D.9°44

Ans: 9°44

Q16.	The lowest alkene, that is capable of exhibiting geometrical isomerism is
	A.Ethene
	B.But – 1- ene
	C.But – 2 – ene
	D.Propene.

Ans: But – 2 – ene

Q17.	A dibromo derivative of an alkane reacts with sodium metal to form an alicyclic hydrocarbon. The derivative is ______.
	A.2, 2-dibromobutane
	B.1, 1-dibromopropane
	C.1, 4-dibromobutane
	D.1, 2-dibromoethane

Ans: 1, 4-dibromobutane

Q18.	Phenyl magnesium bromide reacts with methanol to give
	A.A mixture of Benzene and Mg(OME) Br
	B.A mixture of Propane and Mg(OME) Br
	C.A mixture of Methane and Mg(OME) Br
	D.All of the above

Ans: A mixture of Benzene and Mg(OME) Br

Q19.	A gas decolourised by KMnO₄ solution but gives no precipitate with ammoniacal cuprous chloride is
	A.Ethane
	B.Methane
	C.Ethene
	D.Acetylene

Ans: Ethene

Q20.	When cyclohexane is poured on water, it floats because
	A.Cyclohexane is in boat form
	B.Cyclohexane is in chair form
	C.Cyclohexane is in crown fromorm
	D.Cyclohexane is less dense than water.