CIE Organic chemistry and analysis Quizz 1 Welcome to your CIE Organic chemistry and analysis Quizz 1 Ethanol and methoxymethane are isomers of each other. What type of isomers are they? Functional group isomers Chain isomers Optical isomers Position isomers Which of the following are formed as a result of homolytic fission? Free radicals Simple Ions Molecules Electrophiles What type of isomers are 1-Chlorobutane and 2-Chlorobutane? Position isomers Chain isomers Optical isomers EZ Isomers Which of the following is true about heterolytic fission? In heterolytic fission, the most electronegative atom takes the electrons in the covalent bond. In heterolytic fission, each electron in the shared pair leaves with an atom that formed the covalent bond. The products of heterolytic fission are free radicals. None of the above What are nucleophiles? electron donors electron acceptors neutral atoms carbon with slight positive charge Which of the following carbocations is most stable? tertiary carbocation secondary carbocation primary carbocation All are equally stable What is the H-C-H bond angle in ethane? 109.5˚ 107˚ 120˚ 104.5˚ What is the H-C-H bond angle in ethene? 117˚ 107˚ 109.5˚ 104.5˚ What is the shape of a benzene molecule? Planar Trigonal planar pyramidal bent Which of the following does not exhibit EZ isomerism? but-1ene but-2-ene pent-2-ene hex-3-ene Which of the following statements is correct?I. Thermal cracking produces mainly cyclic alkanesII. Low pressure is required for thermal crackingIII. Catalytic cracking is done to obtain aromatic hydrocarbons III only I and II only I only II only Which of the following is(are) product(s) of complete combustion of alkanes?I. OxygenII. Carbon dioxideIII.Carbon monoxide II only I and II only I only III only What is the mechanism of formation of chloroalkanes? Free radical substitution Electrophilic substitution Nucleophilic substitution Elimination Which of following reactions that an alkane absolutely cannot undergo? Addition substitution combustion Alkanes can undergo all of above reactions Bromine reacts with alkenes at room temperature. What is the reaction mechanism? Electrophilic Addition Nucleophilic Addition Free radical addition Electrophilic substitution Time is Up!