Quiz for Hydrocarbons

Q1: What is the IUPAC name of CH≡C−CH₃?

A. Propyne B. Propene C. Butyne D. Methylacetylene

Q2: Which of the following is an aromatic hydrocarbon?

A. Cyclohexane B. Benzene C. Hexyne D. Cyclobutane

Q3: What type of hybridization is present in ethyne (acetylene)?

A. sp³ B. sp² C. sp D. None

Q4: What is the major product of the reaction of 1-butene with HBr?

A. 1-bromobutane B. 2-bromobutane C. Butanol D. Butyne

Q5: Alkynes can be distinguished from alkenes by?

A. Br₂ in CCl₄ B. Baeyer’s reagent C. Ammoniacal AgNO₃ D. HCl

Q6: Which of the following compounds shows geometrical isomerism?

A. Butane B. But-2-ene C. Propane D. Ethyne

Q7: Which reagent is used for the test of unsaturation?

A. Tollens’ reagent B. Baeyer’s reagent C. Fehling’s solution D. Lucas reagent

Q8: Which hydrocarbon is the starting material for TNT?

A. Toluene B. Methane C. Benzene D. Cyclohexane

Q9: Which of the following has the highest boiling point?

A. Methane B. Ethane C. Butane D. Pentane

Q10: Which of the following is least reactive in electrophilic substitution?

A. Benzene B. Toluene C. Nitrobenzene D. Phenol

Q11: What is the product when ethene is reacted with cold dilute KMnO₄?

A. Ethane B. Ethane-1,2-diol C. Ethanol D. Acetylene

Q12: Alkanes are generally obtained from which refining process?

A. Cracking B. Hydration C. Polymerization D. Fermentation

Q13: Which of the following is not a property of alkanes?

A. Saturated hydrocarbons B. Nonpolar molecules C. Undergo substitution D. Highly reactive

Q14: Which reagent converts alkynes to alkanes?

A. H₂/Pd B. KMnO₄ C. O₃ D. HNO₃

Q15: Which compound is formed when benzene reacts with chlorine in presence of FeCl₃?

A. Chlorobenzene B. Dichloromethane C. Phenol D. Chloroform

Q16: Which hydrocarbon gives a white precipitate with ammoniacal AgNO₃?

A. Propyne B. Ethene C. But-2-yne D. Methane

Q17: Which of the following is a linear molecule?

A. Methane B. Ethene C. Ethyne D. Cyclopropane

Q18: What is the correct order of reactivity towards electrophilic addition?

A. Alkenes > Alkynes > Alkanes B. Alkanes > Alkynes > Alkenes C. Alkynes > Alkanes > Alkenes D. Alkanes > Alkenes > Alkynes

Q19: Which alkane has the lowest boiling point?

A. Methane B. Ethane C. Propane D. Butane

Q20: Which of the following is used in polymerization of ethene?

A. Peroxide B. HCl C. NaOH D. KMnO₄