This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 3 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the name of the functional group in alcohols? A) Sulfhydryl group. B) Hydroxyl group. C) Carbonyl group. D) Amine group. Show Answer Correct Answer: B) Hydroxyl group. 2. Maximum-I effect is exerted by the group A) -OCH$_{3}$. B) -C$_{6}$H$_{5}$. C) -Cl. D) -NO$_{2}$. Show Answer Correct Answer: D) -NO$_{2}$. 3. Which of the following belongs to homologous series of alkynes? A) C$_{6}$H$_{6}$. B) C$_{2}$H$_{4}$. C) C$_{2}$H$_{6}$. D) C$_{3}$H$_{4}$. Show Answer Correct Answer: B) C$_{2}$H$_{4}$. 4. Two molecules are non-polar and have an attractive force between them A) London dispersion forces. B) Dipole-dipole. C) Dispersion forces. D) Hydrogen bonding. Show Answer Correct Answer: A) London dispersion forces. 5. Which of the following is an isomer of ethanol? A) Dimethylether. B) Diethylether. C) Methanol. D) Acetone. Show Answer Correct Answer: A) Dimethylether. 6. 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. 7. Which polymer is polyester A) Nylon 66. B) Glyptal. C) PVC. D) PAN. Show Answer Correct Answer: B) Glyptal. 8. Produces bubbles of colourless gas with NaHCO$_{3}$ A) Amines. B) Haloalkanes. C) Carboxylic acids. D) Alcohos. Show Answer Correct Answer: C) Carboxylic acids. 9. 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=52.17%, H=13.04%, O=34.79%. C) C=50%, H=50%. D) C=72%, H=28%. Show Answer Correct Answer: B) C=52.17%, H=13.04%, O=34.79%. 10. The number of resonating structures in Benzene are A) 2. B) 4. C) 5. D) 1. Show Answer Correct Answer: C) 5. 11. C$_{3}$H$_{8}$ is the formula of A) Ethane. B) Butane. C) Propane. D) Pentane. Show Answer Correct Answer: C) Propane. 12. 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. 13. What technique is used to separate crude oil (Petroleum) into its different fragments? A) Evaporation to dryness. B) Separating funnel. C) Simple distillation. D) Fractional distillation. Show Answer Correct Answer: D) Fractional distillation. 14. What is the name of the following carbon chain?C-C-C-C=C-C-C A) 4 Hepteno. B) Hepteno. C) Heptano. D) 3 Hepteno. Show Answer Correct Answer: D) 3 Hepteno. 15. 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. 16. Select the correct name of the following formula. C$_{6}$H$_{10}$ A) Hexane. B) Hexene. C) Hexanol. D) Hexyne. Show Answer Correct Answer: D) Hexyne. 17. 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. 18. Result when polar molecules line up their opposite charges A) Dipole-dipole. B) London dispersion. C) Hydrogen bonding. D) Dispersion forces. Show Answer Correct Answer: A) Dipole-dipole. 19. What are the required reagents / conditions for the reaction below?CH$_{3}$CH$_{2}$OH $\rightarrow$ CH$_{3}$CHO A) NaBH$_{4}$ in ethanol / LiAlH$_{4}$ in ether. B) Concentrated H$_{2}$SO$_{4}$ / high temperature. C) Aqueous NaOH / warm (or aqueous H$_{2}$SO$_{4}$ / warm). D) K$_{2}$Cr$_{2}$O$_{7}$ / aqueous H$_{2}$SO$_{4}$ / warm. Show Answer Correct Answer: D) K$_{2}$Cr$_{2}$O$_{7}$ / aqueous H$_{2}$SO$_{4}$ / warm. 20. All organic molecules contain the element: A) Oxygen. B) Hydrogen. C) Carbon. D) Sulfur. Show Answer Correct Answer: C) Carbon. 21. Geometric shape of the methane molecule A) Tetrahedral. B) Linear. C) Volumetric. D) Flat. Show Answer Correct Answer: A) Tetrahedral. 22. 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 a nucleophile. D) It is an electrophile. Show Answer Correct Answer: D) It is an electrophile. 23. 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. 24. The carbocation CH$_{3}$CHCH$_{3}$ is less stable than A) $_{+}$CH$_{3}$. B) $_{ +}$(CH$_{3}$)$_{3}$C. C) $_{+}$CH$_{3}$CH$_{2}$CH$_{2}$. D) $_{+}$CH$_{3}$CH$_{2}$. Show Answer Correct Answer: B) $_{ +}$(CH$_{3}$)$_{3}$C. 25. The monomer of a protein: A) Amino acid. B) Nucleotide. C) Monosaccharide. D) Fatty acid. Show Answer Correct Answer: A) Amino acid. ← PreviousNext →Related 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 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 9Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 10Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books