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 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Glycerine can be purified by A) Steam distillation. B) Fractional distillation. C) Vaccum distillation. D) Simple distillation. Show Answer Correct Answer: C) Vaccum distillation. 2. The suffix used for alkenes A) Ane. B) Ene. C) Yne. D) All. Show Answer Correct Answer: B) Ene. 3. Hydrocarbons that contain at least one carbon-to-carbon triple bond. A) Alkanes. B) Alkenes. C) Alkynes. D) None of the above. Show Answer Correct Answer: C) Alkynes. 4. Which of the following is a saturated hydrocarbon? A) Ethene (C2H4). B) Benzene (C6H6). C) Propane (C3H8). D) Ethyne (C2H2). Show Answer Correct Answer: C) Propane (C3H8). 5. The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclatre is A) -CONH$_{2}$, -CHO, -SO3H, -COOH. B) -SO$_{3}$H, -COOH, -CONH$_{2}$, -CHO. C) -COOH, -SO$_{3}$H, -CONH$_{2}$, -CHO. D) -CHO, -COOH, -SO$_{3}$H, -CONH$_{2}$. Show Answer Correct Answer: C) -COOH, -SO$_{3}$H, -CONH$_{2}$, -CHO. 6. Properties depend on number of solute particles A) Physical properties. B) Colligative properties. C) Chemical properties. D) None of the above. Show Answer Correct Answer: B) Colligative properties. 7. What are the required reagents / conditions for the reaction below?CH$_{3}$CH$_{2}$OH $\rightarrow$ C$_{2}$H$_{4}$ A) Concentrated H$_{2}$SO$_{4}$ / high temperature. B) H$_{2}$O / H$_{3}$PO$_{4}$ catalyst / high pressure. C) Br$_{2}$ / UV light. D) H$_{2}$ / Ni catalyst / 150$^{o}$C. Show Answer Correct Answer: A) Concentrated H$_{2}$SO$_{4}$ / high temperature. 8. How many isomer of pentane, C$_{5}$H$_{12}$? A) 5. B) 2. C) 3. D) 4. Show Answer Correct Answer: C) 3. 9. Which type(s) of formula should NOT be used when describing mechanisms using curly arrows? A) Displayed formulae. B) Structural formulae. C) Skeletal formulae. D) None of the above. Show Answer Correct Answer: B) Structural formulae. 10. Elements cannot be broken down. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 11. The molecular formula for benzene is A) C$_{6}$H$_{6}$. B) CH. C) C$_{3}$H$_{3}$. D) C$_{2}$H$_{2}$. Show Answer Correct Answer: A) C$_{6}$H$_{6}$. 12. Number of alpha hydrogen atoms in 2-butene molecule is ..... A) 3. B) 4. C) 6. D) 2. Show Answer Correct Answer: C) 6. 13. What is the name of the triple bonded compounds which are unsaturated? A) Alkynes. B) Alkones. C) Alkanes. D) Alkenes. Show Answer Correct Answer: A) Alkynes. 14. Hydrocarbon which is a greenhouse gas is: A) Butane. B) Methane. C) Ethane. D) Ethylene. Show Answer Correct Answer: B) Methane. 15. The most viscous fraction in the fractional distillation of crude oil A) Fuel oil. B) Bitumen. C) Refinery gas. D) Kerosene. Show Answer Correct Answer: B) Bitumen. 16. Which Hydrocarbon is More Flammable? A) Longer Hydrocarbon Chain. B) Shorter Hydrocarbon Chain. C) All the above. D) None of the above. Show Answer Correct Answer: B) Shorter Hydrocarbon Chain. 17. Shorter hydrocarbons have: A) Higher boiling points. B) Lower boiling points. C) All the above. D) None of the above. Show Answer Correct Answer: B) Lower boiling points. 18. Water is the best known ..... A) Solution. B) Solvent. C) Mixture. D) None of the above. Show Answer Correct Answer: B) Solvent. 19. Reagent needed to change an alcohol to an alkene A) Cr$_{2}$O$_{7}$$^{2-}$/H$^{+}$. B) Water/dilute H$_{2}$SO$_{4}$. C) KOH (alc). D) Concentrated H$_{2}$SO$_{4}$. Show Answer Correct Answer: D) Concentrated H$_{2}$SO$_{4}$. 20. Compounds having the general formula CnH2n include A) Benzene. B) Hexine. C) Hexane. D) Cyclohexane. Show Answer Correct Answer: D) Cyclohexane. 21. What are the required reagents / conditions for the reaction below?C$_{2}$H$_{4}$ $\rightarrow$ C$_{2}$H$_{6}$ A) Aqueous NaOH / warm. B) H$_{2}$ / H$_{3}$PO$_{4}$ catalyst / high pressure. C) H$_{2}$ / Ni catalyst / 150$^{o}$C. D) H$_{2}$O / H$_{3}$PO$_{4}$ catalyst / high pressure. Show Answer Correct Answer: C) H$_{2}$ / Ni catalyst / 150$^{o}$C. 22. Which is true regarding the isoelectric point in amino acids: A) The pH at which amino acid exist as cation. B) The pH at which it exist as zwitter ion. C) The pH at which it moves towards +ve plate of electric field. D) All are correct. Show Answer Correct Answer: B) The pH at which it exist as zwitter ion. 23. Which statement define the Lewis acid correctly A) Any species that can accept proton. B) Substance that accept an electron pair. C) Substance that donate an electron pair. D) Any species that can donate proton. Show Answer Correct Answer: B) Substance that accept an electron pair. 24. How many bonds can be formed by carbon? A) Four. B) One. C) Three. D) Two. Show Answer Correct Answer: A) Four. 25. Electrons shared between 2 atoms with electronegativity difference 0.5 < x < 1.7 A) Ionic. B) Cation. C) Covalent. D) Polar covalent. Show Answer Correct Answer: D) Polar covalent. 26. Alcohol +? $\rightarrow$ carboxylic acid A) Water. B) Carbon dioixde. C) Hydrogen. D) Oxygen (oxidising agent). Show Answer Correct Answer: D) Oxygen (oxidising agent). 27. The definition of matter is A) Has mass and takes up space. B) Has volume and temperature. C) Has weight and a specific Ph. D) None of the above. Show Answer Correct Answer: A) Has mass and takes up space. 28. Carboxylic acids on treating with P2O5 will give A) Esters. B) Acid anhydrides. C) Amides. D) Acid chloride. Show Answer Correct Answer: B) Acid anhydrides. 29. Keto-enol tautomerism take place in: A) Acidic medium. B) Basic Mediium. C) In neutral medium. D) Both acidic and basic medium. Show Answer Correct Answer: D) Both acidic and basic medium. 30. H atoms bonded structures because it is assumed that each C atom will posses enough H atoms to achieve an octet of electrons A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 31. Which of the following is not a hydrocarbon? A) Ethene. B) Ethyne. C) Ethane. D) Ethanol. Show Answer Correct Answer: D) Ethanol. 32. Which physical property of compounds are you taking advantage of when purifying a liquid mixture by distillation? A) Freezing point. B) Melting point. C) Boiling point. D) Sublimation point. Show Answer Correct Answer: C) Boiling point. 33. What is the IUPAC name for CH$_{3}$CH$_{2}$OH? A) Ethanol. B) Methanol. C) Butanol. D) Propanol. Show Answer Correct Answer: A) Ethanol. 34. What are the required reagents / conditions for the reaction below?CH$_{3}$CH$_{2}$Br $\rightarrow$ CH$_{3}$CH$_{2}$OH A) Aqueous HCl / warm. B) H$_{2}$ / Ni catalyst / 150$^{o}$C. C) K$_{2}$Cr$_{2}$O$_{7}$ / aqueous H$_{2}$SO$_{4}$. D) Aqueous NaOH / warm. Show Answer Correct Answer: D) Aqueous NaOH / warm. 35. IUPAC name of (CH$_{3}$)$_{3}$C-CH=CH$_{2}$ is A) Hex-1-ene. B) 2, 2-dimethylpent-4-ene. C) 3, 3-dimethylbut-1-ene. D) 2, 2-dimethylbut-3-ene. Show Answer Correct Answer: C) 3, 3-dimethylbut-1-ene. 36. The study of carbon-containing molecules and their reactions A) Advanced organic chemistry. B) General chemistry. C) Inorganic chemistry. D) Organic chemistry. Show Answer Correct Answer: D) Organic chemistry. 37. The increasing order of stability of the follwing free radicals is A) (CH$_{3}$)CH<(CH$_{3}$)$_{3}$C<(C$_{6}$H$_{5}$)$_{3}$C<(C$_{6}$H$_{5}$)$_{2}$CH. B) (CH$_{3}$)$_{2}$CH<(CH$_{3}$)$_{3}$C<(C$_{6}$H$_{5}$)$_{2}$CH< (C$_{6}$H$_{5}$)$_{3}$. C) (C$_{6}$H$_{5}$)$_{3}$C<(C$_{6}$H$_{5}$)$_{2}$<(CH$_{3}$)$_{3}$C<(CH$_{3}$)$_{2}$CH. D) (C$_{6}$H$_{5}$)$_{2}$CH<(C$_{6}$H$_{5}$)$_{3}$C<(CH$_{3}$)$_{2}$CH. Show Answer Correct Answer: B) (CH$_{3}$)$_{2}$CH<(CH$_{3}$)$_{3}$C<(C$_{6}$H$_{5}$)$_{2}$CH< (C$_{6}$H$_{5}$)$_{3}$. 38. I can have an alkene with only one carbon? A) Yes, obviously. B) No, What happen with you?. C) All the above. D) None of the above. Show Answer Correct Answer: B) No, What happen with you?. 39. Which of the following carbocation is more stable? A) Tertiary carbocation. B) Primary carbocation. C) Secondary carbocation. D) None of the above. Show Answer Correct Answer: A) Tertiary carbocation. 40. Most stable conformation of cyclohexane is A) Half chair. B) Boat. C) Chair. D) Twist boat. Show Answer Correct Answer: C) Chair. 41. Different fractions in crude oil are separated by: A) Filtration. B) Fractional Distillation. C) Cracking. D) Crystalisation. Show Answer Correct Answer: B) Fractional Distillation. 42. Hydrocarbons that contain at least one carbon-to-carbon double bond. A) Alkanes. B) Alkenes. C) Alkynes. D) None of the above. Show Answer Correct Answer: B) Alkenes. 43. Of an organic compound gave 2.6g of magnesium pyrophosphate. The percentage of phosphorous in the compound is A) 37.76%. B) 54.38%. C) 19.02%. D) 45.38%. Show Answer Correct Answer: D) 45.38%. 44. +I effect is shown by- A) -CH$_{3}$. B) -Cl. C) -C$_{6}$H$_{5}$. D) -COOH. Show Answer Correct Answer: A) -CH$_{3}$. 45. Attractive force between an H bond to an electronegative atom (N, O, or F) and a lone pair of another electronegative atom A) London dispersion forces. B) Dipole-dipole. C) Dispersion forces. D) Hydrogen bonding. Show Answer Correct Answer: D) Hydrogen bonding. 46. A structural isomer of pentane is? A) 1-methyl propane. B) 2-methyl butane. C) 2, 2-dimethyl octane. D) 1-methyl pentane. Show Answer Correct Answer: B) 2-methyl butane. 47. What property allows us to separate hydrocarbons during fractional distillation? A) Different hydrocarbons have different boiling points. B) Different hydrocarbons have different melting points. C) Different hydrocarbons are different colours. D) Some hydrocarbons have a positive charge and others have a negative charge. Show Answer Correct Answer: A) Different hydrocarbons have different boiling points. 48. The term organic compound was coined by whom? A) Jons Jakob Berzelius. B) Thomas Edison. C) Gregor Johan Mendel. D) Marie Curie. Show Answer Correct Answer: A) Jons Jakob Berzelius. 49. What are the required reagents / conditions for the reaction below? A) Aqueous HCl / warm. B) K$_{2}$Cr$_{2}$O$_{7}$ / aqueous H$_{2}$SO$_{4}$. C) Aqueous NaOH / warm. D) H$_{2}$ / Ni catalyst / 150$^{o}$C. Show Answer Correct Answer: C) Aqueous NaOH / warm. 50. What is the name of the functional group in alcohols? A) Hydroxyl group. B) Amine group. C) Carbonyl group. D) Sulfhydryl group. Show Answer Correct Answer: A) Hydroxyl group. 51. Maximum-I effect is exerted by the group A) -NO$_{2}$. B) -Cl. C) -OCH$_{3}$. D) -C$_{6}$H$_{5}$. Show Answer Correct Answer: A) -NO$_{2}$. 52. Which of the following belongs to homologous series of alkynes? A) C$_{6}$H$_{6}$. B) C$_{3}$H$_{4}$. C) C$_{2}$H$_{4}$. D) C$_{2}$H$_{6}$. Show Answer Correct Answer: C) C$_{2}$H$_{4}$. 53. Two molecules are non-polar and have an attractive force between them A) Hydrogen bonding. B) London dispersion forces. C) Dispersion forces. D) Dipole-dipole. Show Answer Correct Answer: B) London dispersion forces. 54. Which of the following is an isomer of ethanol? A) Acetone. B) Dimethylether. C) Methanol. D) Diethylether. Show Answer Correct Answer: B) Dimethylether. 55. What do you call an atom that carries an electrical charge? A) Ion. B) Isotope. C) Quartz. D) Compound. Show Answer Correct Answer: A) Ion. 56. Which polymer is polyester A) Nylon 66. B) PVC. C) Glyptal. D) PAN. Show Answer Correct Answer: C) Glyptal. 57. Produces bubbles of colourless gas with NaHCO$_{3}$ A) Amines. B) Haloalkanes. C) Carboxylic acids. D) Alcohos. Show Answer Correct Answer: C) Carboxylic acids. 58. Of an organic compound was analysed. The increase in mass of CaCl$_{2}$ U-tube was 0.54g and bulb was 0.88g. The percentage composition of the compound is A) C=32.19%, H=18.01%, O=49.8%. B) C=50%, H=50%. C) C=52.17%, H=13.04%, O=34.79%. D) C=72%, H=28%. Show Answer Correct Answer: C) C=52.17%, H=13.04%, O=34.79%. 59. The number of resonating structures in Benzene are A) 5. B) 4. C) 1. D) 2. Show Answer Correct Answer: A) 5. 60. C$_{3}$H$_{8}$ is the formula of A) Propane. B) Pentane. C) Butane. D) Ethane. Show Answer Correct Answer: A) Propane. 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