This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques – Quiz 22 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 22 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The molecular formula for Heptane is A) C$_{4}$H$_{10}$. B) C$_{5}$H$_{12}$. C) C$_{7}$H$_{18}$. D) C$_{7}$H$_{16}$. Show Answer Correct Answer: C) C$_{7}$H$_{18}$. 2. Which functional group contains a triple bond? A) Alcohol. B) Alkane. C) Aldehyde. D) Alkyne. Show Answer Correct Answer: D) Alkyne. 3. Which one of the following is NOT a natural polymer? A) Starch. B) Nylon. C) Proteins. D) Cellulose. Show Answer Correct Answer: B) Nylon. 4. Which list does NOT contain compounds found in the same homologous series? A) Methane, ethane, propane, butane. B) Pentane, hexanol, heptane, octane. C) Nonane, decane, undecane, dodecane. D) Tridecane, tetradecane, pentadecane, hexadecane. Show Answer Correct Answer: B) Pentane, hexanol, heptane, octane. 5. Which hv more boiling point A) Butanol. B) Ethane. C) Methane. D) Propane. Show Answer Correct Answer: A) Butanol. 6. 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) 44. B) 50. C) 56. D) 60. Show Answer Correct Answer: C) 56. 7. What are the required reagents / conditions for the reaction below?CH$_{3}$COOH $\rightarrow$ CH$_{3}$COOCH$_{2}$CH$_{3}$ A) CH$_{3}$CH$_{2}$OH / concentrated H$_{2}$SO$_{4}$ / warm. B) CH$_{3}$COOH / concentrated H$_{2}$SO$_{4}$ / warm. C) CH$_{3}$CH$_{2}$OH. D) Concentrated H$_{2}$SO$_{4}$ / high temperature. Show Answer Correct Answer: A) CH$_{3}$CH$_{2}$OH / concentrated H$_{2}$SO$_{4}$ / warm. 8. What are the required reagents / conditions for the reaction below?CH$_{3}$CH$_{2}$CN $\rightarrow$ CH$_{3}$CH$_{2}$CONH$_{2}$ A) H$_{2}$O dilute HCl. B) P$_{4}$O$_{10}$. C) LiAlH$_{4}$ / ether. D) Dilute NH$_{3}$ / ether. Show Answer Correct Answer: A) H$_{2}$O dilute HCl. 9. 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$_{12}$H$_{24}$O$_{12}$. B) C$_{8}$H$_{16}$O$_{8}$. C) C$_{6}$H$_{12}$O$_{6}$. D) C$_{3}$H$_{6}$O$_{3}$. Show Answer Correct Answer: C) C$_{6}$H$_{12}$O$_{6}$. 10. What functional group of organic compounds is made up of only hydrogen and carbon atoms? A) Hycarbonates. B) Carbohydrates. C) Hydrocarbons. D) Carbonogens. E) Nitrates. Show Answer Correct Answer: C) Hydrocarbons. 11. What is the functional group of an ester? A) R-O=C | C-R'. B) R-C = O | O-R'. C) R-C=O | C. D) R-C=O | C-R'. Show Answer Correct Answer: B) R-C = O | O-R'. 12. 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. 13. One method to identify pentanol from ethanol A) Add bromine water. B) Add water. C) Use litmus paper. D) Use acidified water. Show Answer Correct Answer: B) Add water. 14. 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) Ethanol. B) Ethanoic acid. C) Methanol. D) Methanoic acid. Show Answer Correct Answer: B) Ethanoic acid. 15. What is the primary structure of proteins? A) Three-dimensional structure of amino acids. B) Linear sequence of amino acids. C) Quaternary structure of amino acids. D) Secondary structure of amino acids. Show Answer Correct Answer: B) Linear sequence of amino acids. 16. The hybridization of carbons of C-C bond of HCC-CH=CH$_{2}$ is A) Sp-sp$^{2}$. B) Sp$^{3}$-sp. C) Sp$^{3}$-sp$^{3}$. D) Sp$^{2-}$sp$^{3}$. Show Answer Correct Answer: A) Sp-sp$^{2}$. 17. Which of the following is alcohol A) CH$_{3}$CHO. B) CH$_{3}$CH$_{2}$OH. C) CH$_{3}$OCH$_{3}$. D) CH$_{3}$COOH. Show Answer Correct Answer: B) CH$_{3}$CH$_{2}$OH. 18. Which statement best defines chain isomerism? A) Existance of chemical compounds with same molecular formula. B) Different ways the same number of carbons are connected which is either straight or branched. C) Have mirror image of each other. D) Similar chemical properties with different physical properties such as solubility. Show Answer Correct Answer: B) Different ways the same number of carbons are connected which is either straight or branched. 19. 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. 20. 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. 21. This scientist converted "inorganic" salt ammonium cyanate into "organic" urea that is usually found in humans A) Friedrich Wohler. B) Michel Chevreul. C) Jacob Berzelius. D) Torbern Bergman. Show Answer Correct Answer: A) Friedrich Wohler. 22. Which functional group contains a carbonyl group? A) Ester. B) Carboxylic acid. C) Aldehyde. D) Ketone. Show Answer Correct Answer: C) Aldehyde. 23. The increasing order of electron donating inductive effect of alkyl group is A) -H >-CH$_{3}$ >-C$_{2}$H$_{5 }$>-C$_{3}$H$_{7}$. B) -H <-CH$_{3 }$<-C$_{2}$H$_{5 }$<-C$_{3}$H$_{7}$. C) -H >-C$_{2}$H$_{5}$ >-CH$_{3}$ >-C$_{3}$H$_{7}$. D) -H <-C$_{2}$H$_{5}$ >-CH$_{3}$ <-C$_{3}$H$_{7}$. Show Answer Correct Answer: B) -H <-CH$_{3 }$<-C$_{2}$H$_{5 }$<-C$_{3}$H$_{7}$. 24. What is the simplest alkane? A) Methane. B) Propane. C) Ethane. D) Nonane. Show Answer Correct Answer: A) Methane. 25. Carbon has three forms (allothrops). Which one is NOT one? A) Diamond. B) Coal. C) Granite. D) Graphite. 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