This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques – Quiz 28 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 28 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which fossil fuel is made of 6% sulfur and is the dirtiest to burn? A) Natural gas. B) Coal. C) Gasoline. D) Heating oil. Show Answer Correct Answer: B) Coal. 2. What does the viscosity of a hydrocarbon tell you? A) How easily it flows. B) How easily it sets alight. C) What its boiling point is. D) How long the hydrocarbon is. Show Answer Correct Answer: A) How easily it flows. 3. The eg of heterocyclic aromatic compound A) Benzene. B) Pyridine. C) Cyclopropane. D) None of the above. Show Answer Correct Answer: B) Pyridine. 4. Which of the following is the correct IUPAC name? A) 5-Ethyl-4, 4-dimethylheptane. B) 4, 4-dimethyl-3-ethylheptane. C) 3-Ethyl-4, 4-dimethylheptane. D) 4, 4-Bis(Methyl)-3-ethylpentane. Show Answer Correct Answer: C) 3-Ethyl-4, 4-dimethylheptane. 5. Which compound is most soluble in water? A) CH$_{3}$CH$_{2}$CHO. B) CH$_{3}$CH$_{2}$CH$_{2}$CHO. C) CH$_{3}$CH$_{2}$CO$_{2}$H. D) CH$_{3}$CH$_{2}$CH$_{2}$CO$_{2}$H. Show Answer Correct Answer: C) CH$_{3}$CH$_{2}$CO$_{2}$H. 6. Which of the following enzyme is used to produce glucose from sugar? A) Zymase. B) Invertase. C) Maltase. D) Pepsin. Show Answer Correct Answer: B) Invertase. 7. The total number bonds carbon can have in organic compounds A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: D) 4. 8. Which effect is present in Benzoic acid? A) +M. B) -M. C) +I. D) -I. Show Answer Correct Answer: B) -M. 9. Isoelectric point of glycine is A) 10. B) 6. C) 2. D) 4. Show Answer Correct Answer: B) 6. 10. Which compound decolourises bromine water? A) Ethane. B) Methane. C) Ethene. D) Propane. Show Answer Correct Answer: C) Ethene. 11. Which compound is present in all organic compounds? A) Nitrogen. B) Oxygen. C) Carbon. D) Sulfur. Show Answer Correct Answer: C) Carbon. 12. In Kjeldahl's method of estimation of N, N is quantitatively converted to ammonium sulphate. It is then treated with standard solution of alkalI. The nitrogen which is preset is estimated as A) N$_{2}$ gas. B) (NH$_{4}$)$_{2}$SO$_{4}$ ppt. C) NO$_{2}$ gas. D) NH$_{3}$ gas. Show Answer Correct Answer: D) NH$_{3}$ gas. 13. What are the required reagents / conditions for the reaction below?CH$_{3}$CHO $\rightarrow$ CH$_{3}$COOH A) H$_{2}$O / H$_{3}$PO$_{4}$ catalyst / high pressure. B) NaBH$_{4}$ in ethanol / LiAlH$_{4}$ in ether. C) K$_{2}$Cr$_{2}$O$_{7}$ / aqueous H$_{2}$SO$_{4}$. D) Concentrated H$_{2}$SO$_{4}$ / high temperature. Show Answer Correct Answer: C) K$_{2}$Cr$_{2}$O$_{7}$ / aqueous H$_{2}$SO$_{4}$. 14. True or False:Cyclic hydrocarbons that contain only single carbon-carbon bonds are called cycloalkanes. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 15. Slowly decolourises Br$_{2}$ water-needs uv and/or heat A) Amines. B) Alkenes. C) ALkanes. D) Alkynes. Show Answer Correct Answer: C) ALkanes. 16. Ethylidene chloride is a/an A) Gem-dihalide. B) Vic-dihalide. C) Allylic halide. D) Vinylic halide. Show Answer Correct Answer: A) Gem-dihalide. 17. If on adding FeCl$_{3}$ solution to acidified Lassaigne solution, a blood red colourisation is produced. It indicates the presence of A) N. B) S and Cl. C) S. D) N and S. Show Answer Correct Answer: D) N and S. 18. Which of the following is not an example of a function of lipids? A) Insulation. B) Energy storage. C) Hormone production. D) Catalyzing chemical reactions. Show Answer Correct Answer: D) Catalyzing chemical reactions. 19. Alkane molecules are made of which elements? A) Carbon and hydrogen. B) Carbon, hydrogen and oxygen. C) Carbon and oxygen. D) Carbon, nitrogen and hydrogen. Show Answer Correct Answer: A) Carbon and hydrogen. 20. What catalyst is used in making esters? A) Sodium hydroxide. B) Iron. C) Sulfuric acid. D) Lithium oxide. Show Answer Correct Answer: C) Sulfuric acid. 21. The number of C-H bonds in propane molecule are: A) Seven. B) Six. C) Eight. D) Ten. Show Answer Correct Answer: C) Eight. 22. Which of the following represents 3-methypena-1, 3-diene? A) CH$_{2}$=CHCH(CH$_{3}$)CH$_{2}$CH$_{3}$. B) CH$_{3}$CH=C(CH$_{3}$)$_{2}$. C) CH$_{2}$=CH(CH$_{2}$)$_{2}$CH$_{3}$. D) CH$_{3}$CH=C(CH$_{3}$)CH=CH$_{2}$. Show Answer Correct Answer: D) CH$_{3}$CH=C(CH$_{3}$)CH=CH$_{2}$. 23. Macromolecule means: A) A very small molecule. B) A double unit of a molecule. C) A single unit of a molecule. D) A very large molecule. Show Answer Correct Answer: D) A very large molecule. 24. Hydrogen atoms are substituents (side chains) in hydrocarbons. A) True. B) False. C) I have no idea. D) None of the above. Show Answer Correct Answer: B) False. 25. Aliphatic hydrocarbons consist only single bonds, and so are called ..... hydrocarbons. A) Unsaturated. B) Saturated. C) Aromatic. D) Chain. 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