This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Chemistry Part Ii > Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A compound decolorizes bromine water in the dark. Which statement is correct? A) It contains C=C and is an alkene. B) It contains C-C and is an alkene. C) It contains C=C and is an alkane. D) It contains C-C and is an alkane. Show Answer Correct Answer: A) It contains C=C and is an alkene. 2. What technique is used to separate crude oil (Petroleum) into its different fragments? A) Evaporation to dryness. B) Fractional distillation. C) Separating funnel. D) Simple distillation. Show Answer Correct Answer: B) Fractional distillation. 3. What is the name of the following carbon chain?C-C-C-C=C-C-C A) 3 Hepteno. B) Hepteno. C) 4 Hepteno. D) Heptano. Show Answer Correct Answer: A) 3 Hepteno. 4. What is the main function of lipids in living organisms? A) Facilitate nerve transmission, regulate body temperature, and aid in digestion. B) Store energy, provide insulation, and serve as a structural component of cell membranes. C) Transport oxygen, regulate blood sugar levels, and support muscle growth. D) Promote cell division, regulate hormone production, and enhance immune function. Show Answer Correct Answer: B) Store energy, provide insulation, and serve as a structural component of cell membranes. 5. Select the correct name of the following formula. C$_{6}$H$_{10}$ A) Hexene. B) Hexanol. C) Hexane. D) Hexyne. Show Answer Correct Answer: D) Hexyne. 6. Which among the following defines Meso forms of isomers A) Meso form is optically inactive due to external compensation. B) The molecules of the meso isomers are chiral. C) It can be separated into optically active enantiometric pairs. D) It is a single compound. Show Answer Correct Answer: D) It is a single compound. 7. Result when polar molecules line up their opposite charges A) London dispersion. B) Dispersion forces. C) Dipole-dipole. D) Hydrogen bonding. Show Answer Correct Answer: C) Dipole-dipole. 8. What are the required reagents / conditions for the reaction below?CH$_{3}$CH$_{2}$OH $\rightarrow$ CH$_{3}$CHO A) K$_{2}$Cr$_{2}$O$_{7}$ / aqueous H$_{2}$SO$_{4}$ / warm. B) NaBH$_{4}$ in ethanol / LiAlH$_{4}$ in ether. C) Concentrated H$_{2}$SO$_{4}$ / high temperature. D) Aqueous NaOH / warm (or aqueous H$_{2}$SO$_{4}$ / warm). Show Answer Correct Answer: A) K$_{2}$Cr$_{2}$O$_{7}$ / aqueous H$_{2}$SO$_{4}$ / warm. 9. All organic molecules contain the element: A) Sulfur. B) Hydrogen. C) Carbon. D) Oxygen. Show Answer Correct Answer: C) Carbon. 10. Geometric shape of the methane molecule A) Linear. B) Tetrahedral. C) Flat. D) Volumetric. Show Answer Correct Answer: B) Tetrahedral. 11. Bromine reacts with ethene to form 1, 2-dibromoethane. What is the correct description of the organic intermediate in this reaction? A) It has a negative charge. B) It is a free radical. C) It is an electrophile. D) It is a nucleophile. Show Answer Correct Answer: C) It is an electrophile. 12. The reaction in which new carbon carbon bond formation take place: A) Wurtz reaction. B) Cannizzaro reaction. C) Finkelstein reaction. D) All of these. Show Answer Correct Answer: A) Wurtz reaction. 13. The carbocation CH$_{3}$CHCH$_{3}$ is less stable than A) $_{ +}$(CH$_{3}$)$_{3}$C. B) $_{+}$CH$_{3}$CH$_{2}$CH$_{2}$. C) $_{+}$CH$_{3}$CH$_{2}$. D) $_{+}$CH$_{3}$. Show Answer Correct Answer: A) $_{ +}$(CH$_{3}$)$_{3}$C. 14. A mixture of water and ethanol is ..... azeotrope A) Minimum boiling. B) Maximum boiling. C) Normal. D) None of the above. Show Answer Correct Answer: A) Minimum boiling. 15. What are the 2 classes of matter? A) Atom and Molecule. B) Element and Compound. C) Plant and Animal Cells. D) Substance and Mixture. Show Answer Correct Answer: D) Substance and Mixture. 16. The branch of chemistry that studies carbon-containing substances A) Analytical Chemistry. B) Inorganic Chemistry. C) Organic Chemistry. D) Biochemistry. Show Answer Correct Answer: C) Organic Chemistry. 17. Fluoroalkane is obtained from which of the following reaction? A) Finkelstein. B) Swartz. C) Sandmeyers. D) Dow. Show Answer Correct Answer: B) Swartz. 18. Starch and cellulose are ..... found in plants. A) Polysaccharides. B) Monosaccharides. C) Lipids. D) Monomers. Show Answer Correct Answer: A) Polysaccharides. 19. Which of the following statements is wrong about alkanes? A) They are all saturated hydrocarbons. B) They can undergo addition as well as substitution reaction. C) They are almost non polar in nature. D) On complete combustion give out carbon dioxide and water. Show Answer Correct Answer: B) They can undergo addition as well as substitution reaction. 20. -1 charge, reside in orbitals (shells) outside of the nucleus A) Electron. B) Neutrino. C) Neutron. D) Proton. Show Answer Correct Answer: A) Electron. 21. Which of the following is the best reagent to distinguish between ethylene and acetylene? Reagent P:Bromine water; Reagent Q:Ammoniacal silver nitrate solution; Reagent R:Potassium permanganate solution. A) Only P. B) Only Q. C) Both P and Q. D) Both Q and R. Show Answer Correct Answer: B) Only Q. 22. What is the name of the double bonded compounds, which are unsaturated? A) Alkynes. B) Alkenes. C) Alkones. D) Alkanes,. Show Answer Correct Answer: B) Alkenes. 23. A fossil fuel with 80 carbons must be a: A) A) gas. B) B) liquid. C) C) solid. D) None of the above. Show Answer Correct Answer: C) C) solid. 24. The conversion of butanoic acid into butan-1-ol is an example of A) Substitution. B) Oxidation. C) Elimination. D) Reduction. Show Answer Correct Answer: D) Reduction. 25. In which series of organic compounds are only hydrocarbons: A) C2H6, C4H8, C2H5OH;. B) CH3COOH, C6H6, CH3COH;. C) C6H5NO2, CH2Cl2, C3H7NH2. D) C2H2, C3H8, C17H36;. Show Answer Correct Answer: D) C2H2, C3H8, C17H36;. 26. An example of condensation polymer A) Polythene. B) PVC. C) Polypropene. D) Bakelite. Show Answer Correct Answer: D) Bakelite. 27. The suffix used for the ethers A) Al. B) One. C) Ol. D) Oxy. Show Answer Correct Answer: D) Oxy. 28. What is the general formula for alkanes in organic chemistry? A) $C_nH_{2n-2}$. B) $C_nH_{2n+2}$. C) $C_nH_{2n+1}$. D) $C_nH_{2n}$. Show Answer Correct Answer: B) $C_nH_{2n+2}$. 29. Is a main kind of organic compound, this compounds served many task in the human body some are, production of new compounds, breaking down compounds, give structure and replication of dna. A) Carbohydrates. B) Proteins. C) Nucleic Acids. D) Lipids. Show Answer Correct Answer: B) Proteins. 30. Which of the following is the definition of chirality? A) A molecule that has a carbon atom with four different substituents. B) A molecule with a mirror image. C) The superimposability of an object on its mirror image. D) The non-superimposability an object on its mirror image. Show Answer Correct Answer: D) The non-superimposability an object on its mirror image. 31. Point out the incorrect statement about resonance. A) Resonance structures should have equal energy. B) Resonance structures should differ only in the location of electrons around the constituent atoms. C) In resonance structures, there should not be same number of electron pairs. D) In resonance structures, the constituent atoms must be in the same position. Show Answer Correct Answer: B) Resonance structures should differ only in the location of electrons around the constituent atoms. 32. How many inorganic materials do we have approx? A) 100000. B) 10000. C) 10000000. D) 1000. Show Answer Correct Answer: A) 100000. 33. The fragrance of flowers is due to the presence of some steam volatile organic compounds called essential oils. These are generally insoluble in water at room temperature but are miscible with water vapour in vapour phase. A suitable method for the extraction of oils from the flower is A) Distillation. B) Distillation under reduced pressure. C) Steam distillation. D) Crystallization. Show Answer Correct Answer: C) Steam distillation. 34. Which element is organic chemsitry about? A) Carbon. B) Boron. C) Sodium. D) Sulphur. Show Answer Correct Answer: A) Carbon. 35. Nicotine-water system is having ..... type of critical solution temperature type A) Upper. B) Lower. C) Both. D) Neither upper nor lower. Show Answer Correct Answer: C) Both. 36. In which organic reaction does a chlorine atom replace a hydrogen atom in a methane molecule? A) Substitution. B) Polymerization. C) Condensation. D) Addition. Show Answer Correct Answer: A) Substitution. 37. All of these functional groups shown a strong peak at region 1800 to 1650 cm-1 with a very strong band at 1715 cm-1 except A) Alcohol. B) Carboxylic acid. C) Aldehyde. D) Ketone. Show Answer Correct Answer: A) Alcohol. 38. During the distillation of crude oil, petroleum compounds are separated according to the difference in their ..... A) Mass. B) Boiling point. C) Density. D) Unsaturation. Show Answer Correct Answer: B) Boiling point. 39. Dithiane is used to: A) Adding alkyl group at alpha position of carbonyl gp. B) Adding acyl group at alpha position of carbonyl gp. C) Adding halide group at alpha position of carbonyl gp. D) Both alkyl and acyl gp at alpha position of carbonyl gp. Show Answer Correct Answer: D) Both alkyl and acyl gp at alpha position of carbonyl gp. 40. A polar molecule will have A) A difference in electronegativity. B) The same electronegativity. C) Symmetry. D) None of the above. Show Answer Correct Answer: A) A difference in electronegativity. 41. What determines the properties of hydrocarbons A) BP. B) Molecular structure. C) MP. D) None of the above. Show Answer Correct Answer: B) Molecular structure. 42. What is kerosene used for? A) Fuel for ships. B) Fuel for lorries. C) Fuel for airplanes. D) Making roads. Show Answer Correct Answer: C) Fuel for airplanes. 43. Oxidation of phthalimide with aqueous sodium hydroxide will give A) Coumarin. B) Citric acid. C) Lactic acid. D) Anthranilic acid. Show Answer Correct Answer: D) Anthranilic acid. 44. Carbon able to form tetravalence bonding because A) The ability to form covalent bonding. B) The ability to form multiple bonding types. C) It has four valence electrons. D) It has four electrons. Show Answer Correct Answer: C) It has four valence electrons. 45. CnH2n+2 is used for the A) Molecular formula. B) Skeletal formula. C) Complete formula. D) None of the above. Show Answer Correct Answer: A) Molecular formula. 46. Term used to refer to probability of finding an electron (the orbital shape is 90-95% of the space where an electron "probably" is) A) Electron orbital. B) Electron density. C) Electron shell. D) Electron cloud. Show Answer Correct Answer: B) Electron density. 47. Hemiacetal formation is: A) Aldehydes undergo addition reactions with alcohol. B) Ketone undergo addition reactions with alcohol. C) Ether undergo addition reactions with alcohol. D) Aldehydes and Ketone undergo addition reactions with alcohol. Show Answer Correct Answer: D) Aldehydes and Ketone undergo addition reactions with alcohol. 48. The simplest organic compounds are the hydrocarbons. Hydrocarbons are made of ..... A) Carbon and hydrogen only. B) Carbon, oxygen and hydrogen. C) Carbon, nitrogen, oxygen and hydrogen. D) Carbon and nitrogen only. Show Answer Correct Answer: A) Carbon and hydrogen only. 49. Hydroxy group (OH) normally will give broad band at FTIR region A) 3000-3600 cm-1. B) 2750-2850 cm-1. C) 1650-1800 cm-1. D) 3600-4000 cm-1. Show Answer Correct Answer: A) 3000-3600 cm-1. 50. Pi bonds are stronger than sigma bonds A) True. B) Fasle. C) All the above. D) None of the above. Show Answer Correct Answer: B) Fasle. 51. Name the fifth member of the Alkynes series A) Pentane. B) Pentene. C) Pentyne. D) None of the above. Show Answer Correct Answer: C) Pentyne. 52. The following is a type of structural isomerism, EXCEPT: A) Chain isomer. B) Position isomer. C) Functional group isomer. D) Optical isomer. Show Answer Correct Answer: D) Optical isomer. 53. Which of these substances is synthetic? A) Plastic. B) RNA. C) Kerosene. D) Sugar. Show Answer Correct Answer: A) Plastic. 54. What is the correct name?C-C-C-C=C-C-C-C-C=C-C A) 7-eno, 2-ino Undecano. B) 7-eno, 2 Undecino. C) Is a mistake. D) 9-Ino, 4 Undeceno. Show Answer Correct Answer: B) 7-eno, 2 Undecino. 55. Which of the compounds shown are in the same homologous series?1 CH3OH2 CH3CH2OH3 CH3COOH4 CH3CH2CH2OH A) 1, 2 and 3. B) 1, 2 and 4. C) 1, 3 and 4. D) 2, 3 and 4. Show Answer Correct Answer: B) 1, 2 and 4. 56. The study of the structure, properties, composition, reactions, and preparation of carbon-containing compounds (a) A) Catacoustics. B) Abyssal. C) Gluon. D) A. Organic chemistry. Show Answer Correct Answer: D) A. Organic chemistry. 57. Which of the following prefixes represents "7" ? A) Pent-. B) Prop-. C) But-. D) Hept-. Show Answer Correct Answer: D) Hept-. 58. What is the IUPAC name for CH3CH2CH2CH3? A) Propane. B) Butane. C) Methane. D) Ethane. Show Answer Correct Answer: B) Butane. 59. Which of the following statement is INCORRECT about electrophiles? A) Electrophiles are positively charged or neutral species having vacant orbitals. B) The electrophiles are attacked by the most electron-populated part of one nucleophile. C) Electrophiles are Lewis base. D) -NO$_{2}$ and-CH$_{3}$ are examples of electrophiles. Show Answer Correct Answer: C) Electrophiles are Lewis base. 60. What does this make them useful for? A) Lubricants. B) Fuels. C) Plastics. D) Feedstock. Show Answer Correct Answer: B) Fuels. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 1Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 3Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 4Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 5Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 6Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 7Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 8Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books