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 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 9 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following would not be produced by an addition reaction of but-2-ene? A) CH$_{3}$CHBrCHBrCH$_{3}$. B) CH$_{3}$CH$_{2}$CH$_{2}$CH$_{2}$OH. C) CH$_{3}$CH(OH)CH$_{2}$CH$_{3}$. D) CH$_{3}$CH$_{2}$CH$_{2}$CH$_{3}$. Show Answer Correct Answer: B) CH$_{3}$CH$_{2}$CH$_{2}$CH$_{2}$OH. 2. Which of the following is the general formula for a Carboxylic Acid? A) ROH. B) ROR. C) RCHO. D) C=O. E) RCOOH. Show Answer Correct Answer: E) RCOOH. 3. Whch of the following ions is the most resonance stabilised? A) Isopropoxide. B) Ethoxide. C) Phenoxide. D) Butoxide. Show Answer Correct Answer: C) Phenoxide. 4. Alkanes are known as saturated hydrocarbons because they contain only carbon-hydrogen single bonds. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 5. Hydrogenation of alkene results in the formation of A) Propene. B) Alkyne. C) Alkane. D) Propyne. Show Answer Correct Answer: C) Alkane. 6. Out of these which is aromatic? A) Benzene. B) Propane. C) Butene. D) Cyclohexane. Show Answer Correct Answer: A) Benzene. 7. Which compound is an isomer of CH$_{3}$CH$_{2}$OH? A) CH$_{3}$COCH$_{3}$. B) CH$_{3}$COOH. C) CH$_{3}$OCH$_{3 }$. D) CH$_{3 }$CH$_{2}$CH3. Show Answer Correct Answer: C) CH$_{3}$OCH$_{3 }$. 8. Branch of Chemistry which deals with C and its compounds are commonly called A) Organic chemistry. B) All of these. C) Inorganic chemistry. D) Physical chemistry. Show Answer Correct Answer: A) Organic chemistry. 9. What are the Aliphatic Hydrocarbons? A) Open chained carbon hydrogen organic compounds. B) Closed chained carbon hydrogen organic compounds. C) Straight chained carbon hydrogen and some other elements organic compounds. D) Closed chained carbon hydrogen and some other elements organic compounds. Show Answer Correct Answer: A) Open chained carbon hydrogen organic compounds. 10. Amino acids are joined by ..... bonds for form a protein. A) Ionic. B) Peptide. C) Covalent. D) Hydrogen. Show Answer Correct Answer: B) Peptide. 11. Functional group isomerism have different molecular formula but contains similar functional group. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 12. When writing names for organic compounds, 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. 13. Arseneous sulphide is ..... colloid A) Negative. B) Neutral. C) Positive. D) None of the above. Show Answer Correct Answer: A) Negative. 14. Carbon is found in the highest oxidation state in which of these classes of organic compounds? A) Alkynes. B) Alcohols. C) Aldehydes. D) Carboxylic acids. Show Answer Correct Answer: D) Carboxylic acids. 15. Which of the following cannot be oxidized by potassium dichromate? A) Propan-2-ol. B) Hexan-3-ol. C) 2-methylpropan-1-ol. D) 2-methylbutan-2-ol. Show Answer Correct Answer: D) 2-methylbutan-2-ol. 16. Who is the father of Chemistry? A) Hennig Brand. B) Dimitri Mendeleev. C) Antoine Lavoisier. D) Isaac Newton. Show Answer Correct Answer: C) Antoine Lavoisier. 17. Which of the following is used as a drying agent and is also hygroscopic? A) Sodium chloride. B) Copper sulfate solution. C) Phosphorus pentoxide. D) Water. Show Answer Correct Answer: C) Phosphorus pentoxide. 18. Carbon's atomic number is 6. It means that Carbon has A) 6 neutrons. B) 6 neutrinos. C) 6 protons. D) 6 bosons. Show Answer Correct Answer: C) 6 protons. 19. A condensation reaction: A) Adds water to a compound as a reactant. B) Produces water as a product. C) All the above. D) None of the above. Show Answer Correct Answer: B) Produces water as a product. 20. The organic compound mixed with ethanol to make it spurious is: A) Methanal. B) Methanoic acid. C) Ethanoic acid. D) Methanol. Show Answer Correct Answer: D) Methanol. 21. The functional group present in aldehyde A) -CHO. B) -COOH. C) -CO-NH$_{2}$. D) -OH. Show Answer Correct Answer: A) -CHO. 22. What is the name of the reaction that breaks down polymers into monomers? A) Hydrolysis. B) Polymerization. C) Dehydration synthesis. D) Condensation. Show Answer Correct Answer: A) Hydrolysis. 23. Sucrose on hydrolysis gives A) Glucose and galactose. B) Glucose and mannose. C) Lactose and mannose. D) Glucose and fructose. Show Answer Correct Answer: D) Glucose and fructose. 24. What is the number of electrons shared in the multiple carbon-carbon bond in one molecule of 1-pentyne? A) 8. B) 6. C) 2. D) 3. Show Answer Correct Answer: B) 6. 25. The molecular formula for Heptane is A) C$_{4}$H$_{10}$. B) C$_{7}$H$_{16}$. C) C$_{7}$H$_{18}$. D) C$_{5}$H$_{12}$. Show Answer Correct Answer: C) C$_{7}$H$_{18}$. 26. Which functional group contains a triple bond? A) Aldehyde. B) Alcohol. C) Alkyne. D) Alkane. Show Answer Correct Answer: C) Alkyne. 27. Which list does NOT contain compounds found in the same homologous series? A) Pentane, hexanol, heptane, octane. B) Tridecane, tetradecane, pentadecane, hexadecane. C) Nonane, decane, undecane, dodecane. D) Methane, ethane, propane, butane. Show Answer Correct Answer: A) Pentane, hexanol, heptane, octane. 28. Which hv more boiling point A) Butanol. B) Methane. C) Propane. D) Ethane. Show Answer Correct Answer: A) Butanol. 29. A sample of 0.50g of an organic compound was treated according to kjeldahl's method. The ammonia evolved was absorbed in 50ml of 0.50M H$_{2}$SO$_{4}$. The residual acid required 60ml of 0.50M solution of NaOH for neutralization. What would be the percentage composition of nitrogen in the compound? A) 50. B) 56. C) 44. D) 60. Show Answer Correct Answer: B) 56. 30. What are the required reagents / conditions for the reaction below?CH$_{3}$COOH $\rightarrow$ CH$_{3}$COOCH$_{2}$CH$_{3}$ A) Concentrated H$_{2}$SO$_{4}$ / high temperature. B) CH$_{3}$CH$_{2}$OH / concentrated H$_{2}$SO$_{4}$ / warm. C) CH$_{3}$COOH / concentrated H$_{2}$SO$_{4}$ / warm. D) CH$_{3}$CH$_{2}$OH. Show Answer Correct Answer: B) CH$_{3}$CH$_{2}$OH / concentrated H$_{2}$SO$_{4}$ / warm. 31. What are the required reagents / conditions for the reaction below?CH$_{3}$CH$_{2}$CN $\rightarrow$ CH$_{3}$CH$_{2}$CONH$_{2}$ A) LiAlH$_{4}$ / ether. B) H$_{2}$O dilute HCl. C) P$_{4}$O$_{10}$. D) Dilute NH$_{3}$ / ether. Show Answer Correct Answer: B) H$_{2}$O dilute HCl. 32. Using combustion reaction of hydrocarbon, empirical formula of hydrocarbon is found as C$_{}$H$_{2}$O . If the molar mass of hydrocarbon is 180g/mol what is the molecular formula of the hydrocarbon? (C:12g/mol, H:1g/mol, O:16g/mol) A) C$_{3}$H$_{6}$O$_{3}$. B) C$_{8}$H$_{16}$O$_{8}$. C) C$_{6}$H$_{12}$O$_{6}$. D) C$_{12}$H$_{24}$O$_{12}$. Show Answer Correct Answer: C) C$_{6}$H$_{12}$O$_{6}$. 33. What functional group of organic compounds is made up of only hydrogen and carbon atoms? A) Carbohydrates. B) Nitrates. C) Hycarbonates. D) Carbonogens. E) Hydrocarbons. Show Answer Correct Answer: E) Hydrocarbons. 34. Which one of the following is a pair of functional group isomers? A) CH$_{3}$COOCH$_{2}$CH$_{3}$ and CH$_{3}$CH$_{2}$COOCH$_{3}$. B) (CH$_{3}$)$_{2}$CHCH(CH$_{3}$)$_{2}$ and (CH$_{3}$)$_{3}$CCH$_{2}$CH$_{3}$. C) CH$_{3}$CH$_{2}$OCH$_{3}$ and (CH$_{3}$)$_{2}$CHOH. D) ClCH$_{2}$CH$_{2}$CH=CH$_{2}$ and CH$_{3}$CH=CHCH$_{2}$Cl. Show Answer Correct Answer: C) CH$_{3}$CH$_{2}$OCH$_{3}$ and (CH$_{3}$)$_{2}$CHOH. 35. One method to identify pentanol from ethanol A) Use acidified water. B) Use litmus paper. C) Add water. D) Add bromine water. Show Answer Correct Answer: C) Add water. 36. An organic compound is found to contain 40.0% carbon, 6.7% hydrogen and 53.3% oxygen.Which of the following compounds could this be? A) Methanol. B) Ethanoic acid. C) Methanoic acid. D) Ethanol. Show Answer Correct Answer: B) Ethanoic acid. 37. The hybridization of carbons of C-C bond of HCC-CH=CH$_{2}$ is A) Sp$^{3}$-sp. B) Sp$^{2-}$sp$^{3}$. C) Sp-sp$^{2}$. D) Sp$^{3}$-sp$^{3}$. Show Answer Correct Answer: C) Sp-sp$^{2}$. 38. Which of the following is alcohol A) CH$_{3}$OCH$_{3}$. B) CH$_{3}$COOH. C) CH$_{3}$CHO. D) CH$_{3}$CH$_{2}$OH. Show Answer Correct Answer: D) CH$_{3}$CH$_{2}$OH. 39. Which statement best defines chain isomerism? A) Have mirror image of each other. B) Existance of chemical compounds with same molecular formula. C) Different ways the same number of carbons are connected which is either straight or branched. D) Similar chemical properties with different physical properties such as solubility. Show Answer Correct Answer: C) Different ways the same number of carbons are connected which is either straight or branched. 40. N-hexane on reaction with nitrous acid will give A) Nitrohexane. B) Nitrobenzene. C) Nitroarenes. D) None of the above. Show Answer Correct Answer: A) Nitrohexane. 41. What are the outer most electrons called A) Energy level. B) Valence. C) Valency. D) None of the above. Show Answer Correct Answer: B) Valence. 42. This scientist converted "inorganic" salt ammonium cyanate into "organic" urea that is usually found in humans A) Michel Chevreul. B) Torbern Bergman. C) Friedrich Wohler. D) Jacob Berzelius. Show Answer Correct Answer: C) Friedrich Wohler. 43. Which functional group contains a carbonyl group? A) Carboxylic acid. B) Ester. C) Aldehyde. D) Ketone. Show Answer Correct Answer: C) Aldehyde. 44. What is the simplest alkane? A) Nonane. B) Ethane. C) Methane. D) Propane. Show Answer Correct Answer: C) Methane. 45. Carbon has three forms (allothrops). Which one is NOT one? A) Coal. B) Diamond. C) Granite. D) Graphite. Show Answer Correct Answer: C) Granite. 46. Which one of the following pairs of reagents reacts to form an organic product that shows only 2 peaks in its proton n.m.r. spectrum? A) Butan-2-ol and acidified potassium dichromate(VI). B) Ethanoyl chloride and methanol. C) Propanoic acid and ethanol in the presence of concentrated sulphuric acid. D) Ethene and hydrogen in the presence of nickel. Show Answer Correct Answer: B) Ethanoyl chloride and methanol. 47. What is the molecular formula of the CH$_{3}$CH$_{2}$N(CH$_{3}$)C(CH$_{3}$)$_{3}$? A) C$_{6}$H$_{15}$N. B) C$_{5}$H$_{15}$N. C) C$_{6}$H$_{16}$N$_{2}$. D) C$_{7}$H$_{17}$N. Show Answer Correct Answer: D) C$_{7}$H$_{17}$N. 48. All molecules of the alkane homologous series have which ending in their name? A) -anol. B) -ane. C) -ene. D) -anoic acid. Show Answer Correct Answer: B) -ane. 49. Given below are the structures of few compounds with molecular formula C$_{4}$H$_{10}$O. Select metamers from these structures.i) CH$_{3}$-O-CH$_{2}$CH$_{2}$CH$_{3}$ii) CH$_{3}$CH$_{2}$CH$_{2}$CH$_{2}$OHiii) CH$_{3}$-CH$_{2}$-O-CH$_{2}$-CH$_{3}$iv) CH$_{3}$-CH-CH$_{2}$-CH$_{3}$ |OH A) (i) and (ii). B) (ii) and (iii). C) (i) and (iii). D) (ii) and (iv). Show Answer Correct Answer: C) (i) and (iii). 50. Which of the following is an example of an element? A) Water (H$_{2}$O. B) Table salt (NaCl). C) Nitrogen (N). D) None of the above. Show Answer Correct Answer: C) Nitrogen (N). 51. The preparations of three substances are given.1 an ester from an alcohol and a carboxylic acid2 ethanol from ethene3 margarine from a vegetable oilIn which preparations are one or more double bonds converted to single bonds? A) 1 and 2. B) 1 only. C) 2 and 3. D) 3 only. Show Answer Correct Answer: C) 2 and 3. 52. Why does carbon form compounds mainly by covalent bonding? A) There are four electrons in the outermost shell of carbon. B) It requires large amount of energy to form C$^{4+}$ or C$^{4-}$. C) It shares its valence electrons to complete its octet. D) All the above. Show Answer Correct Answer: D) All the above. 53. Atoms are bonded together in different orders. A) Structural Isomers. B) Benzene. C) Structural Formula. D) Catenation. Show Answer Correct Answer: A) Structural Isomers. 54. Calculate number of sigma and p bonds in the structures 2-methylbutene-2 A) 11 sigma, 2 p. B) 14 sigma, 2 p. C) 10 sigma, 3 p. D) 15 sigma, 0 p. E) 14 sigma, 1 p. Show Answer Correct Answer: E) 14 sigma, 1 p. 55. What is the simplest alkyne? A) Propyne. B) Butyne. C) Ethyne. D) Methyne. Show Answer Correct Answer: C) Ethyne. 56. Can enantiomer rotates plane-polarised light? A) Yes in all situations. B) No because it is optically active. C) Yes but it can only rotate the polarised light in opposite direction. D) No due to its restricted rotation of carbon-carbon double bond. Show Answer Correct Answer: C) Yes but it can only rotate the polarised light in opposite direction. 57. What are the hybridization and shapes of the following molecules?i) CH$_{3}$Fii) HCN A) (i) sp$^{3}$, tetrahedral; (ii) sp, linear. B) (i) sp$^{2}$, trigonal planar; (ii) sp$^{3}$, tetrahedral. C) (i) sp$^{2}$, trigonal planar; (ii) sp$^{2}$, trigonal planar. D) (i) sp, linear; (ii) sp$^{2}$, trigonal planar. Show Answer Correct Answer: A) (i) sp$^{3}$, tetrahedral; (ii) sp, linear. 58. Chlorination of alkanes is an example of A) Free radical substitution reaction. B) Electrophilic addition reaction. C) Elimination reaction. D) Nucleophilic substitution reaction. Show Answer Correct Answer: A) Free radical substitution reaction. 59. Which of the following is NOT true about nucleophiles? A) Donates an electron pair to an electrophile to form a chemical bond. B) All molecules or ions with a free pair of electrons or at least one pi bond can act as nucleophiles. C) Nucleophile are Lewis acids by definition. D) A nucleophile becomes attracted to a full or partial positive charge. Show Answer Correct Answer: C) Nucleophile are Lewis acids by definition. 60. An important type of protein that serve as catalysts for chemical reactions: A) Keratin. B) Nitrogen base. C) Enzyme. D) Cellulose. Show Answer Correct Answer: C) Enzyme. ← 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 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books