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 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Of an organic compound was analysed by combustion method. The mass of the U-tube increased by 1.08g. What is the percentage of hydrogen in the compound? A) 52.17%. B) 11.30%. C) 13.04%. D) 65.21%. Show Answer Correct Answer: C) 13.04%. 2. The presence of carbon in an organic compound can be shown by A) Heating the compound on bunsen flame. B) Heating the compound with cupric oxide. C) Heating the compound with sodium. D) Heating the compound with magnetism. Show Answer Correct Answer: B) Heating the compound with cupric oxide. 3. What is producing the derivatives of hydrocarbons? A) Functional groups added to CH chain. B) Branches added to CH chain. C) Halogens added to CH chain. D) Some non-metals added to CH chain. Show Answer Correct Answer: A) Functional groups added to CH chain. 4. Is a main kind of organic compound, works to storage information inside a cell. A) Lipids. B) Proteins. C) Nucleic Acid. D) Carbohydrates. Show Answer Correct Answer: C) Nucleic Acid. 5. How many pi bond in sp2 A) Two. B) One. C) None. D) Three. Show Answer Correct Answer: B) One. 6. Which of the following purification methods involves heating the compound and allowing it to go directly from the solid phase to the gas phase, followed by condensation of the pure compound back to a solid upon cooling? A) Recrystallization. B) Sublimation. C) Chromatography. D) Distillation. Show Answer Correct Answer: B) Sublimation. 7. A solution that keeps pH from changing. A) Carbohydrate. B) Monomer. C) Buffer. D) Glucose. Show Answer Correct Answer: C) Buffer. 8. What are the required reagents / conditions for the reaction below?CH$_{3}$CH$_{2}$OH $\rightarrow$ CH$_{3}$COOH A) LiAlH$_{4}$ / ether. B) KMnO$_{4}$ / ether. C) Dilute NH$_{3}$ / ether. D) H$_{2}$O dilute HCl. Show Answer Correct Answer: B) KMnO$_{4}$ / ether. 9. Homologous series is a series of compounds where each members differs from the next member by a constant-CH2 unit. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 10. Branches or yl groups are also called A) Halide groups. B) Functional groups. C) Carboxylic groups. D) Alkyl groups. Show Answer Correct Answer: D) Alkyl groups. 11. Which is the correct general formula for the alkanes? A) C$_{n}$H$_{2n+1}$COOH. B) C$_{n}$H$_{2n+2}$. C) C$_{n}$H$_{2n}$. D) C$_{n}$H$_{2n+1}$OH. Show Answer Correct Answer: B) C$_{n}$H$_{2n+2}$. 12. Erlenmeyer flask is primarily used in distillation. Stirring rod is used to guide liquid when transferring it to other container. A) First statement is true, second statement is false. B) Both statements are true. C) First statement is false, second statement is true. D) Both statements are false. Show Answer Correct Answer: C) First statement is false, second statement is true. 13. Gold sol is ..... colloid A) Lyophobic. B) Lyophilic. C) Associated. D) None of the above. Show Answer Correct Answer: A) Lyophobic. 14. The double bond of ethene is A) A monomer. B) An area of high electron density. C) An electrophile. D) An area of low electron density. Show Answer Correct Answer: B) An area of high electron density. 15. Carbon has a valence of A) 6. B) 8. C) 4. D) 3. Show Answer Correct Answer: C) 4. 16. If you have a carbon chain of 7 carbons, What is the name? A) Eptano. B) Hexano. C) Hebtano. D) Heptano. Show Answer Correct Answer: D) Heptano. 17. Actual numbers of every type of molecule which is present in a compound is represented by A) Skeletal formula. B) Structural formula. C) Empirical formula. D) Molecular formula. Show Answer Correct Answer: D) Molecular formula. 18. The functional group present in alcohols is ..... A) -OH. B) -CO-NH$_{2}$. C) -COOH. D) -CO-. Show Answer Correct Answer: A) -OH. 19. Alkaline hydrolysis of Piperine gives A) Piperidine and piperic acid. B) Piperonylic acid. C) Piperic acid. D) Piperonal. Show Answer Correct Answer: A) Piperidine and piperic acid. 20. The prefix for a hydrocarbon with 4 carbons in the parent chain is A) Prop. B) Quad. C) Tetra. D) But. Show Answer Correct Answer: D) But. 21. What is product obtained when CH$_{3}$CH$_{2}$MgBr reacts with CH$_{3}$CH$_{2}$CHO? A) Pentan-2 ol. B) Pentan-1 ol. C) Pentan-2, 3 diol. D) Pentan-3 ol. Show Answer Correct Answer: A) Pentan-2 ol. 22. Heterolytic fission results in the formation of- A) Cations. B) Anions. C) Both cations and anions. D) None of the above. Show Answer Correct Answer: C) Both cations and anions. 23. IUPAC name of Formic acid A) Methenoic acid1. B) Carbonic acid1. C) Ethenoic acid2. D) None of the above. Show Answer Correct Answer: A) Methenoic acid1. 24. What is the formula for methane? A) CH$_{4}$. B) CH$_{3}$CH$_{3}$. C) CH$_{5}$. D) CH$_{3}$. Show Answer Correct Answer: A) CH$_{4}$. 25. Which term describes the formation of acetic acid from ethyl alcohol? A) Esterification. B) Netralization. C) Addition. D) Oxidation. Show Answer Correct Answer: D) Oxidation. 26. What is the formula of benzene? A) C6H13. B) C6H18. C) C6H6. D) C12H6. Show Answer Correct Answer: C) C6H6. 27. What is the general formula of the alkanes? A) N carbon atoms, 2n hydrogen atoms. B) N carbon atoms, 2n+2 hydrogen atoms. C) N carbon atoms, n+2 hydrogen atoms. D) 2n carbon atoms, n hydrogen atoms. Show Answer Correct Answer: B) N carbon atoms, 2n+2 hydrogen atoms. 28. Give the IUPAC name of this molecular formula C$_{6}$H$_{14}$ A) Hexanol. B) Hexane. C) Hexanal. D) Hexanoic Acid. Show Answer Correct Answer: B) Hexane. 29. Which type of formulas represents only the simplest ratio of the constituent atoms? A) Empirical Formula. B) Condense Formula. C) Molecular Formula. D) Structural Formula. Show Answer Correct Answer: A) Empirical Formula. 30. In organic chemistry, dashes separate ..... A) Numbers. B) Names from numbers. C) All the above. D) None of the above. Show Answer Correct Answer: B) Names from numbers. 31. The prefix for a chain of a hydrocarbon with six carbons A) Hex. B) Hexyl. C) Six. D) None of the above. Show Answer Correct Answer: A) Hex. 32. Which fuel would produce the LEAST smokiest flame when burnt? A) C$_{4}$H$_{10}$. B) C$_{3}$H$_{6}$. C) C$_{2}$H$_{4}$. D) C$_{3}$H$_{8}$. Show Answer Correct Answer: D) C$_{3}$H$_{8}$. 33. How many optical isomers are possible in a compound with one chiral carbon? A) 2. B) 3. C) 5. D) 4. Show Answer Correct Answer: B) 3. 34. Which bond is weaker and is more prone to chemical attacks? A) Pi bond. B) Sigma bond. C) All the above. D) None of the above. Show Answer Correct Answer: A) Pi bond. 35. Different features classified as homologous series A) Physical properties. B) General formula. C) Chemical reaction. D) Functional group. Show Answer Correct Answer: A) Physical properties. 36. Isomers with similar groups on the same side are called as '' trans" isomers. State true or false A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 37. How many bonds can each carbon atom form? A) 3. B) 4. C) 1. D) 2. Show Answer Correct Answer: B) 4. 38. What is the product from the reaction between ethanol and ethanoic acid? A) Ethyl ethanoate. B) Ethyl benzoate. C) Ethyl methanoate. D) Ethanol ethanolate. Show Answer Correct Answer: A) Ethyl ethanoate. 39. What is the IUPAC name for the compound with the molecular formula $C_2H_5OH$ A) Ethanol. B) Methanol. C) Propanol. D) Butanol. Show Answer Correct Answer: A) Ethanol. 40. What is the general formula for an alkane? A) CnH2n+3. B) CnH2n+2. C) CnH2n-2. D) CnH2n. Show Answer Correct Answer: B) CnH2n+2. 41. The main difference between C-X bond of a haloalkane and a haloarene is A) In haloalkanes the C attached to halogen in C-X bond is sp3 hybridised while in haloarenes it is sp2 hybridised. B) Haloalkanes are less reactive than haloarenes due to difficulty in C-X cleavage in haloalkanes. C) C-X bond in haloalkanes is shorter than haloarenes. D) C-X bond in haloalkanes acquires a double bond character due to higher electronegativity of X than haloarenes. Show Answer Correct Answer: A) In haloalkanes the C attached to halogen in C-X bond is sp3 hybridised while in haloarenes it is sp2 hybridised. 42. Is the chemistry of carbon. A) Biochemistry. B) Organic Chemistry. C) Inorganic Chemistry. D) Analytical Chemistry. Show Answer Correct Answer: B) Organic Chemistry. 43. Which is the best method to prepare phenol? A) Cumene. B) From aniline. C) From Benzene sulphonic acid. D) Dow. Show Answer Correct Answer: A) Cumene. 44. What is the name of the structure taken by carbon atoms in order to be combined with several compounds.? A) Octahedral. B) Metahedral. C) Pentahedral. D) Tetrahedral. Show Answer Correct Answer: D) Tetrahedral. 45. The eg of aliphatic cyclic compound is A) Benzene. B) Butadiene. C) Cyclohexane. D) None of the above. Show Answer Correct Answer: C) Cyclohexane. 46. Which functional group contains a sulfur atom? A) Hydroxyl group (-OH). B) Carbonyl group (-C=O). C) Amino group (-NH2). D) Thiol group (-SH). Show Answer Correct Answer: D) Thiol group (-SH). 47. Which of the following is the correct order of acidity of carboxylic acids?i) Cl$_{2}$CCOOH> Cl$_{2}$CHCOOH> ClCH$_{2}$COOHii) CH$_{3}$CH$_{2}$COOH>(CH$_{3}$)$_{2}$CHCOOH> (CH$_{3}$)$_{3}$CCOOHiii) F$_{2}$CHCOOH> FCH$_{2}$COOH>ClCH$_{2}$COOH A) (ii) and (iii). B) (i), (ii) and (iii). C) (i) and (ii). D) (i) and (iii). Show Answer Correct Answer: D) (i) and (iii). 48. A hydrocarbon contains ..... A) Hydrogen and oxygen. B) Hydrogen, carbon and oxygen. C) Hydrogen and carbon. D) Carbon only. Show Answer Correct Answer: C) Hydrogen and carbon. 49. What is the main product of dehydration of 2-propanol? A) 2-chloropropane. B) Propanone. C) Propanoic acid. D) Propene. Show Answer Correct Answer: D) Propene. 50. Electrons between 2 atoms are transferred and electronegativity > 1.7; the more electronegative atom owns the electrons A) Ionic. B) Anion. C) Polar covalent. D) Covalent. Show Answer Correct Answer: A) Ionic. 51. Macromolecule that is made up of repeated structure called monomers A) Protein. B) Amino acids. C) Polymer. D) None of the above. Show Answer Correct Answer: C) Polymer. 52. Which hydrocarbon is a liquid at room conditions? A) C$_{18}$H$_{28}$. B) C$_{4}$H$_{10}$. C) C$_{16}$H$_{34}$. D) C$_{2}$H$_{6}$. Show Answer Correct Answer: C) C$_{16}$H$_{34}$. 53. The Organic Chemistry is ..... A) The study of carbon compounds. B) The study of living organism chemicals. C) The study of oxides, sulfides and chlorides of carbon. D) The study of the group 14 compounds on the periodic table. Show Answer Correct Answer: A) The study of carbon compounds. 54. How many unpaired electrons does carbon have when it is excited? A) 2. B) 3. C) 5. D) 4. Show Answer Correct Answer: D) 4. 55. What is the correct term for a 50:50 mixture of two enantiomers? A) Chiral Mixture. B) Mirror Image Mixture. C) Cis/Trans Mixture. D) Racemic Mixture. Show Answer Correct Answer: D) Racemic Mixture. 56. HYBRIDISATION OF ALKYNES IS A) SP2. B) SP3D. C) SP. D) SP3. Show Answer Correct Answer: C) SP. 57. Which organic compound gives silver mirror reaction with Tollens Reagent and is source of energy for living things? A) Ethanol. B) Glycerine. C) Methane. D) Glucose. Show Answer Correct Answer: D) Glucose. 58. The steric number translates to the dehydration of the central atom A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 59. What is the cardinal rule when drawing bond-line structures? A) Never draw more than 4 bonds to a carbon atom (octet rule). B) When drawing single bonds, the direction in which the bonds are drawn is irrelevant. C) Hybridized atoms in a straight chain should be drawn in zig-zag form. D) When drawing double bonds, draw all bonds as far apart as possible. Show Answer Correct Answer: A) Never draw more than 4 bonds to a carbon atom (octet rule). 60. POSITIVE RESONANCE OR MESOMERIC EFFECTS PRESENT IN A) PHENOL. B) BENZOIC ACID. C) BENZALDEHYDE. D) NONE OF THE ABOVE. Show Answer Correct Answer: A) PHENOL. ← 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 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