This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 12 Organic Chemistry Basic Principles And Techniques Quiz 8 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. On increasing the number of $\alpha$-hydrogens, the number of hyperconjugation structures will A) Decrease. B) Increase. C) Remains same. D) None of the mentioned. Show Answer Correct Answer: B) Increase. 2. Which Hydrocarbon has a Higher Viscosity? A) Longer Hydrocarbon Chain. B) Shorter Hydrocarbon Chain. C) All the above. D) None of the above. Show Answer Correct Answer: A) Longer Hydrocarbon Chain. 3. A hydrocarbon has 5 C atoms with 1 double bond and a functional group "alcohol" . What will be the name of this hydrocarbon? A) Pentanal. B) Propanol. C) Pentenol. D) Propanal. Show Answer Correct Answer: C) Pentenol. 4. Choose the incorrect option regarding isomerism: A) They differ in both physical and chemical properties. B) They have different molecular formula. C) There are two types of isomerism; structural and stereoisomerism. D) Geometrical and optical isomerism are two types of stereoisomerism. Show Answer Correct Answer: B) They have different molecular formula. 5. Protocatechuic acid is A) 2, 4-dihydroxy benzoic acid. B) 1, 2-dihydroxy benzoic acid. C) 3, 4-dihydroxy benzoic acid. D) Diamino benzoic acid. Show Answer Correct Answer: C) 3, 4-dihydroxy benzoic acid. 6. In an experiment, a student adds bromine water to an unknown hydrocarbon and observes that the solution decolorizes. What type of hydrocarbon is the unknown compound likely to be? A) Alkane. B) Alkene. C) Alkyne. D) Aromatic. Show Answer Correct Answer: B) Alkene. 7. Select the incorrect statement from the following option. A) Racemic modification is an equimolar mixture of dextrorotatory and levorotatory isomers. B) Meso compounds contain more than one chiral carbon centre. C) Meso compounds are externally compensated. D) Racemic mixture is designated as dl-pair. Show Answer Correct Answer: C) Meso compounds are externally compensated. 8. When the HBr is added to propene the product/ products formed is/are A) 2-bromopropane. B) Propanamine. C) 1-bromopropane. D) 2-bromopropane and 1-bromopropane. Show Answer Correct Answer: D) 2-bromopropane and 1-bromopropane. 9. In an experiment, which reagent is used to test for the presence of unsaturation in hydrocarbons? A) Bromine water. B) Limewater. C) Benedict's solution. D) Iodine solution. Show Answer Correct Answer: A) Bromine water. 10. ..... geometry is described for only the atoms bonded to the central atom A) Shape. B) Atomic. C) Molecular. D) Electron. Show Answer Correct Answer: C) Molecular. 11. Of an organic compound was analysed by combustion method. The mass of the U-tube increased by 1.08g. What is the percentage of hydrogen in the compound? A) 52.17%. B) 11.30%. C) 13.04%. D) 65.21%. Show Answer Correct Answer: C) 13.04%. 12. The monomer of a nucleic acid: A) Monosaccharide. B) Nucleotide. C) Amino acid. D) Glycerol. Show Answer Correct Answer: B) Nucleotide. 13. The presence of carbon in an organic compound can be shown by A) Heating the compound on bunsen flame. B) Heating the compound with sodium. C) Heating the compound with cupric oxide. D) Heating the compound with magnetism. Show Answer Correct Answer: C) Heating the compound with cupric oxide. 14. What is producing the derivatives of hydrocarbons? A) Halogens added to CH chain. B) Some non-metals added to CH chain. C) Functional groups added to CH chain. D) Branches added to CH chain. Show Answer Correct Answer: C) Functional groups added to CH chain. 15. Is a main kind of organic compound, works to storage information inside a cell. A) Nucleic Acid. B) Carbohydrates. C) Proteins. D) Lipids. Show Answer Correct Answer: A) Nucleic Acid. 16. How many pi bond in sp2 A) Two. B) One. C) None. D) Three. Show Answer Correct Answer: B) One. 17. Which of the following purification methods involves heating the compound and allowing it to go directly from the solid phase to the gas phase, followed by condensation of the pure compound back to a solid upon cooling? A) Recrystallization. B) Sublimation. C) Chromatography. D) Distillation. Show Answer Correct Answer: B) Sublimation. 18. A solution that keeps pH from changing. A) Glucose. B) Carbohydrate. C) Monomer. D) Buffer. Show Answer Correct Answer: D) Buffer. 19. What are the required reagents / conditions for the reaction below?CH$_{3}$CH$_{2}$OH $\rightarrow$ CH$_{3}$COOH A) H$_{2}$O dilute HCl. B) KMnO$_{4}$ / ether. C) LiAlH$_{4}$ / ether. D) Dilute NH$_{3}$ / ether. Show Answer Correct Answer: B) KMnO$_{4}$ / ether. 20. Homologous series is a series of compounds where each members differs from the next member by a constant-CH2 unit. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 21. Branches or yl groups are also called A) Halide groups. B) Alkyl groups. C) Functional groups. D) Carboxylic groups. Show Answer Correct Answer: B) Alkyl groups. 22. Which is the correct general formula for the alkanes? A) C$_{n}$H$_{2n+2}$. B) C$_{n}$H$_{2n}$. C) C$_{n}$H$_{2n+1}$OH. D) C$_{n}$H$_{2n+1}$COOH. Show Answer Correct Answer: A) C$_{n}$H$_{2n+2}$. 23. Erlenmeyer flask is primarily used in distillation. Stirring rod is used to guide liquid when transferring it to other container. A) First statement is true, second statement is false. B) Both statements are true. C) First statement is false, second statement is true. D) Both statements are false. Show Answer Correct Answer: C) First statement is false, second statement is true. 24. Gold sol is ..... colloid A) Lyophobic. B) Lyophilic. C) Associated. D) None of the above. Show Answer Correct Answer: A) Lyophobic. 25. The double bond of ethene is A) An area of low electron density. B) An electrophile. C) A monomer. D) An area of high electron density. Show Answer Correct Answer: D) An area of high electron density. ← 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 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 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