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 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Isomerism that arises out of the difference in spatial arrangement of atoms or groups about the doubly bonded carbon atoms are called? (In specific) A) Structural Isomerism. B) Geometrical Isomerism. C) Optical Isomerism. D) Stereo Isomerism. Show Answer Correct Answer: B) Geometrical Isomerism. 2. What is a reaction mechanism? A) The reaction conditions. B) The steps through which a reaction happens. C) The full balanced equation for a reaction. D) What a reaction looks like. Show Answer Correct Answer: B) The steps through which a reaction happens. 3. The functional group present in the carboxylic acid ..... A) -CO-. B) -CO-NH$_{2}$. C) -COOH. D) -OH. Show Answer Correct Answer: C) -COOH. 4. The number of structural isomers of molecular formula C$_{4}$H$_{9}$Br is A) 5. B) 2. C) 3. D) 4. Show Answer Correct Answer: D) 4. 5. It acts as the main source of energy? A) Carbohydrates. B) Nucleic acid. C) Protein. D) Lipids. Show Answer Correct Answer: A) Carbohydrates. 6. Unsaturated hydrocarbons are A) C4H8. B) C5H8. C) C6H14. D) Both C4H8 & C5H8. Show Answer Correct Answer: D) Both C4H8 & C5H8. 7. Number of moles of solute present in 1 kg of solvent is ..... A) Normality. B) Mole fraction. C) Molality. D) Molarity. Show Answer Correct Answer: C) Molality. 8. Can you have an double aldehyde in a carbon chain? A) No, because if you have an double aldehyde the name change. B) Yes!!! you can have two or more aldehyde groups in a carbon chain. C) No!! is imposible, you only can have an aldehyde. D) Yes, you can. Show Answer Correct Answer: D) Yes, you can. 9. In organic chemistry, the C element normally bonded with the following atoms, EXCEPT: A) Br. B) Na. C) H. D) O. Show Answer Correct Answer: B) Na. 10. In hydrocarbons, how does the rate of carbon and hydrogen increase? A) C:1 H:2. B) C.0 H:1. C) C:2 H:1. D) C:1 H:3. Show Answer Correct Answer: A) C:1 H:2. 11. Molecules with the same molecular structure but have different structural formulas are called ..... A) Isomers. B) Constitutional polymers. C) Biomolecules. D) Polymers. Show Answer Correct Answer: A) Isomers. 12. Which reaction is not a reversible reaction? A) Melting lead(II) bromide. B) Thermal decomposition of hydrated cobalt(II) chloride. C) Combustion of alkanes. D) Combustion of alkanes. Show Answer Correct Answer: C) Combustion of alkanes. 13. For surfacing roads A) Refinery gas. B) Diesel. C) Bitumen. D) Petroleum. Show Answer Correct Answer: C) Bitumen. 14. How many sigma and pi bonds are present in CH$_{2}$=C=CHCH$_{3}$ A) 6 sigma and 2 pi. B) 9 sigma and 2 pi. C) 7 sigma and 4 pi. D) None of the above. Show Answer Correct Answer: B) 9 sigma and 2 pi. 15. An organic compound contains 69% carbon and 4.8% hydrogen, the remainder being oxygen. What will be the masses of carbon dioxide and water produced when 0.20g of this substance is subjected to complete combustion? A) 0.506g and 0.086g. B) 0.345g and 0.024g. C) 0.69g and 0.048g. D) 0.91g and 0.72g. Show Answer Correct Answer: A) 0.506g and 0.086g. 16. Which of the following process can transform pentene to pentane? A) Fermentation. B) Hydrogenation. C) Reduction. D) Oxidation. Show Answer Correct Answer: B) Hydrogenation. 17. Which type of intermediate (A) is formed during the reaction?CH$_{3}$CH$_{2}$-N=N-CH$_{2}$CH$_{3 }$+N$_{2}$ A) Carbanion. B) Free radical. C) Carbocation. D) Carbene. Show Answer Correct Answer: B) Free radical. 18. Nucleophiles donate its pair of electrons to electron deficient species and hence behave as: A) Lewis bases. B) Lewis acids. C) Bronsted acids. D) None of the above. Show Answer Correct Answer: A) Lewis bases. 19. Which set of conditions would be most suitable to convert ethene to ethanol? A) 600$^\circ$C, Al$_{2}$O$_{3}$ catalyst. B) Room temperature, no catalyst. C) 200$^\circ$C, Ni catalyst. D) 300$^\circ$C, 65 atm, H$_{3}$PO$_{4}$ catalyst. Show Answer Correct Answer: D) 300$^\circ$C, 65 atm, H$_{3}$PO$_{4}$ catalyst. 20. General formula for alkane A) C$_{n}$H$_{2n}$. B) C$_{n}$H$_{2n-2}$. C) CH. D) C$_{n}$H$_{2n+2}$. Show Answer Correct Answer: D) C$_{n}$H$_{2n+2}$. 21. Turns H$^{+}$/MnO$_{4}$$^{-}$ from purple to colourless (no heat needed) A) Alcohol. B) Amine. C) Alkene. D) Alkane. Show Answer Correct Answer: C) Alkene. 22. For a molecule with two like chiral carbon atoms, the number of optically inactive form is? A) 3. B) 1. C) 4. D) 2. Show Answer Correct Answer: B) 1. 23. Which of the following alkyl halides would undergo S$_{N}$2 reaction most rapidly? A) CH$_{3}$CH$_{2}$-F. B) They react at the same rate. C) CH$_{3}$CH$_{2}$-Br. D) CH$_{3}$CH$_{2}$-Cl. E) CH$_{3}$CH$_{2}$-I. Show Answer Correct Answer: E) CH$_{3}$CH$_{2}$-I. 24. Which hydrocarbon is saturated? A) C$_{3}$H$_{4}$. B) C$_{2}$H$_{2}$. C) C$_{4}$H$_{10}$. D) C$_{4}$H$_{6}$. Show Answer Correct Answer: C) C$_{4}$H$_{10}$. 25. Nitrogen can make up ..... bonds. A) 3. B) 1. C) 4. D) 2. Show Answer Correct Answer: A) 3. 26. Which of the following type of alcohol is obtained from Hydroboration method? A) Primary. B) Tertiary. C) Quartarnary. D) Secondary. Show Answer Correct Answer: A) Primary. 27. Which is propyl propanoate? A) CH$_{3}$CH$_{2}$CH$_{2}$COOCH$_{2}$CH$_{3}$. B) CH$_{3}$CH$_{2}$CH$_{2}$OCH$_{2}$CH$_{2}$CH$_{3}$. C) CH$_{3}$CH$_{2}$CH$_{2}$COCH$_{2}$CH$_{3}$. D) CH$_{3}$CH$_{2}$CH$_{2}$OOCCH$_{2}$CH$_{3}$. Show Answer Correct Answer: D) CH$_{3}$CH$_{2}$CH$_{2}$OOCCH$_{2}$CH$_{3}$. 28. The suffix used for ester A) Oxy. B) Ol. C) Ate. D) Al. Show Answer Correct Answer: C) Ate. 29. A solution of Acetone and carbon disulphide shows ..... deviation A) Positive. B) Negative. C) Neither positive nor negative. D) None of the above. Show Answer Correct Answer: A) Positive. 30. Alcohols can be oxidised by ..... A) Combustion. B) Freezing. C) Addition. D) Decomposition. Show Answer Correct Answer: A) Combustion. 31. Fuel for lorries A) Fuel oil. B) Petroleum. C) Diesel. D) Bitumen. Show Answer Correct Answer: C) Diesel. 32. True or False:Polymers can only contain one type of monomer. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 33. WHICH OF THE FOLLOWING IS MOST ACIDIC? A) ALKANE. B) ALKENE. C) ALKYNE. D) NONE. Show Answer Correct Answer: C) ALKYNE. 34. The MP and BP increases as the molecular structure increases A) Hydrocarbons. B) Ethers. C) Ketones. D) None of the above. Show Answer Correct Answer: A) Hydrocarbons. 35. Hydrocarbons burning is an example of what type of chemical reaction? A) Endothermic. B) Exothermic. C) Neutralisation. D) Addition. Show Answer Correct Answer: B) Exothermic. 36. What is the type of hybridization of each carbon in CH3CN? A) Sp$^{3}$, sp$^{2}$. B) Sp$^{2}$, sp. C) Sp$^{3}$, sp. D) None of the above. Show Answer Correct Answer: C) Sp$^{3}$, sp. 37. A fraction of crude oil is made up of: A) Numbers. B) Hydrocarbons of similar chain lengths. C) Large hydrocarbons. D) Alkenes only. Show Answer Correct Answer: B) Hydrocarbons of similar chain lengths. 38. ..... differ in the length of their straight chain or branches. A) Functional group isomers. B) Diastereomers. C) Chain isomers. D) Positional isomers. Show Answer Correct Answer: C) Chain isomers. 39. Which of the following is a characteristic feature of an alkane? A) Presence of a carbon-carbon triple bond. B) Aromatic ring structure. C) Saturated hydrocarbons with single bonds. D) Presence of a carbon-carbon double bond. Show Answer Correct Answer: C) Saturated hydrocarbons with single bonds. 40. Reagent used to convert haloalkane to Propan-2-ol A) Conc KOH. B) Aqueous KOH. C) Acidified water. D) None of the above. Show Answer Correct Answer: B) Aqueous KOH. 41. How many structural isomers are there with the molecular formula C$_{3}$H$_{6}$BrCl? A) 7. B) 6. C) 5. D) 4. Show Answer Correct Answer: C) 5. 42. Free radicals can undergo A) Rearrangement to a more stable free radical. B) Combination with other free radical. C) Decomposition to give another free radical. D) All are correct. Show Answer Correct Answer: D) All are correct. 43. The name for a hydrocarbon that has 6 carbons in a ring with delocalized double bonds is A) Hexene. B) Cyclohexane. C) Benzene. D) Cyclohexene. Show Answer Correct Answer: C) Benzene. 44. What functional group is present in an aldehyde? A) Hydroxyl group. B) Ester group. C) Amino group. D) Carbonyl group. Show Answer Correct Answer: D) Carbonyl group. 45. Which reagent is needed to change CH$_{3}$CH$_{2}$OH to CH$_{3}$COOH A) H$_{2}$O/ dilute H$_{2}$SO$_{4}$. B) NH$_{3}$(alc). C) KOH (aq). D) Cr$_{2}$O$_{7}$$^{2-}$/H$^{+}$. Show Answer Correct Answer: D) Cr$_{2}$O$_{7}$$^{2-}$/H$^{+}$. 46. What is the IUPAC name for the compound with the molecular formula $C_3H_8O$ A) Propanol. B) Propanone. C) Propanal. D) Propanoic acid. Show Answer Correct Answer: A) Propanol. 47. The organic compound obtained as the end product of the fermentation of sugar solution is: A) Methanol. B) Methanoic acid. C) Ethane. D) Ethanol. Show Answer Correct Answer: D) Ethanol. 48. Which element must be present in all organic compounds? A) Carbon. B) Nitrogen. C) Hydrogen. D) Oxygen. Show Answer Correct Answer: A) Carbon. 49. How to determine that a molecule exhibit cis-trans isomerism? A) Restricted rotation in a carbon-carbon single bond of alkenes. B) Exist in cyclic compouds only. C) Each carbon of a site of restricted rotation has 2 different atoms or groups attached to it. D) Similar chemical properties. Show Answer Correct Answer: C) Each carbon of a site of restricted rotation has 2 different atoms or groups attached to it. 50. The IUPAC name of CHO.CH2.CH.CH.COOH will be A) Pent2ene, 1oicacid, 5al. B) Bute2ene1oic5al. C) Pent1ene2al3oicacid. D) None of the above. Show Answer Correct Answer: A) Pent2ene, 1oicacid, 5al. 51. Isomerism is defined as organic compound which have ..... A) Same arrangement and molecular formula. B) Same molecular formula but different arrangement. C) Different molecular formula and arrangement. D) Different molecular formula but same arrangement. Show Answer Correct Answer: B) Same molecular formula but different arrangement. 52. What compounds are produced in the complete combustion of hydrocarbons? A) Carbon dioxide and water. B) Carbon monoxide and water. C) Carbon dioxide and nitrogen. D) Water and nitrogen. Show Answer Correct Answer: A) Carbon dioxide and water. 53. Electron group includes lone pairs A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 54. Which compound would be the final product formed from reacting ethene with a large excess of bromine in the presence of UV light? A) C$_{2}$H$_{4}$Br$_{2}$. B) C$_{2}$Br$_{6}$. C) C$_{2}$H$_{5}$Br. D) C$_{2}$H$_{3}$Br$_{3}$. Show Answer Correct Answer: B) C$_{2}$Br$_{6}$. 55. The suffix used for the aldehydes A) Al. B) Ol. C) Ad. D) None of the above. Show Answer Correct Answer: A) Al. 56. Which of the following compounds is isomeric with 2, 2, 4, 4-tetramethylhexane? A) 4-isopropylheptane. B) 3-ethyl-2, 2-dimethylpentane. C) 4-ethyl-3-methyl-4-n-propyloctane. D) 4, 4-diethyl-3-methylheptane. Show Answer Correct Answer: A) 4-isopropylheptane. 57. Chlorination of ethane is carried out in presence of A) Ultraviolet. B) Anhydrous AlCl3. C) Zinc chloride. D) Mercuric chloride. Show Answer Correct Answer: A) Ultraviolet. 58. What is the definition of a hydrocarbon? A) A compound made of hydrogen and carbon only. B) A compound that includes hydrogen or carbon. C) A mixture that includes hydrogen and carbon. D) A mixture of hydrogen and carbon only. Show Answer Correct Answer: A) A compound made of hydrogen and carbon only. 59. Which one of the following are NOT one of the most important elements to life? A) O. B) P. C) C. D) Mg. E) N. Show Answer Correct Answer: D) Mg. 60. This is the side-to-side overlapping of 2 atomic orbitals that exist above and below the intermolecular axis A) Mighty bond. B) Carbon bond. C) Pi bond. D) Sigma bond. Show Answer Correct Answer: C) Pi bond. ← 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 2Class 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 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