This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Chemistry Part Ii > Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. During a chemistry class, Neha learned that on Earth, hydrogen exists chemically ..... in molecules. A) Bonded. B) Free state. C) All the above. D) None of the above. Show Answer Correct Answer: A) Bonded. 2. What makes hydrogen a potentially green fuel? A) The fact that it emits water when used in a fuel cell. B) Its natural occurrence in fossil fuels. C) Its abundance in the universe. D) The ease of its production. Show Answer Correct Answer: A) The fact that it emits water when used in a fuel cell. 3. The peculiar property of water in the condensed phase is due to ..... A) A) ionic bond. B) B) hydrogen bond. C) All the above. D) None of the above. Show Answer Correct Answer: B) B) hydrogen bond. 4. How do hydrogen bonds affect proteins? A) They influence the shape and function of proteins. B) They have no effect on proteins. C) They determine the sequence of amino acids. D) They break down proteins. Show Answer Correct Answer: A) They influence the shape and function of proteins. 5. Which of the following is a real-world application of hydrogen bonding? A) Hydrogen bonding is used in the manufacturing of steel. B) Hydrogen bonding is crucial in the formation of cell membranes. C) Hydrogen bonding is essential for the secondary structure of proteins, such as alpha helices and beta sheets. D) Hydrogen bonding is responsible for the color of chlorophyll. Show Answer Correct Answer: C) Hydrogen bonding is essential for the secondary structure of proteins, such as alpha helices and beta sheets. 6. Hydrogen is replaced by ..... due to its inflammable nature. A) Ne. B) He. C) Xe. D) None of the above. Show Answer Correct Answer: B) He. 7. What role does hydrogen bonding play in the structure of DNA? A) Hydrogen bonding stabilizes the double helix structure of DNA by connecting complementary base pairs. B) Hydrogen bonding prevents mutations in the DNA sequence. C) Hydrogen bonding creates the sugar-phosphate backbone of DNA. D) Hydrogen bonding is responsible for the replication of DNA strands. Show Answer Correct Answer: A) Hydrogen bonding stabilizes the double helix structure of DNA by connecting complementary base pairs. 8. What is the percentage existence of oxygen gas in air? A) %21. B) %78. C) %18. D) %32. Show Answer Correct Answer: A) %21. 9. Name the products formed when sodium is dropped in a trough A) Water + NaOH. B) Hydrogen+ NaOH. C) Hydrogen + NaCl. D) None. Show Answer Correct Answer: B) Hydrogen+ NaOH. 10. Which electronic transition in a hydrogen atom release the most energy? A) N = 2 $\rightarrow$ n = 1. B) N = 6 $\rightarrow$ n = 7. C) N = 7 $\rightarrow$ n = 6. D) N = 1 $\rightarrow$ n = 2. Show Answer Correct Answer: A) N = 2 $\rightarrow$ n = 1. 11. Hydrogen is the ..... element in the Periodic Table. A) First. B) Second. C) Third. D) None of the above. Show Answer Correct Answer: A) First. 12. Water at very low temperatures condenses to ..... form. A) Circular. B) Cubic. C) Heptagonal. D) Hexagonal. Show Answer Correct Answer: B) Cubic. 13. Identify the acid, base, conjugate acid, and conjugate base of the following reaction:H$_{2}$C$_{2}$O$_{4}$ + CH$_{3}$NH$_{2}$ < ..... $\rightarrow$ HC$_{2}$O$_{4}$$^{-}$ + CH$_{3}$NH$_{3}$$^{+}$ (From left to Right) A) Base, Acid, Conjugate Acid, Conjugate Base. B) Base, Acid, Conjugate Base, Conjugate Acid. C) Acid, Base, Conjugate Base, Conjugate Acid. D) Acid, Base, Conjugate Acid, Conjugate Base. Show Answer Correct Answer: C) Acid, Base, Conjugate Base, Conjugate Acid. 14. What types of molecules typically participate in hydrogen bonding? A) Molecules with hydrogen bonded to carbon or sulfur. B) Molecules with hydrogen bonded to nitrogen, oxygen, or fluorine. C) Molecules with oxygen bonded to hydrogen or phosphorus. D) Molecules with nitrogen bonded to chlorine or bromine. Show Answer Correct Answer: B) Molecules with hydrogen bonded to nitrogen, oxygen, or fluorine. 15. The state of hydrogen at room temperature and pressure ..... A) Solid. B) Plasma. C) Gas. D) Liquid. Show Answer Correct Answer: C) Gas. 16. The isotopes of hydrogen are A) Protium, deuterium and tritium. B) Protium and deuterium only. C) Deuterium and tritium only. D) Tritium and protium only. Show Answer Correct Answer: A) Protium, deuterium and tritium. 17. PbO + H2 $\rightarrow$ Pb + H2OPbO acts as? A) Oxidising agent. B) Reducing agent. C) All the above. D) None of the above. Show Answer Correct Answer: A) Oxidising agent. 18. How do fuel cells generate electricity? A) Combustion. B) Fusion. C) Electrochemical Reaction. D) None of the above. Show Answer Correct Answer: C) Electrochemical Reaction. 19. The density of water is less in its solid state because A) In solid state, water molecules are arranged in highlyordered open cage like structure. B) More extensive hydrogen bonding is present in solid state. C) The water molecules are closest in solid state of water. D) Water is a rigid crystalline, closely packed structure inits solid state. Show Answer Correct Answer: A) In solid state, water molecules are arranged in highlyordered open cage like structure. 20. Which method of producing hydrogen uses nickel as a catalyst? A) Partial Oxidation. B) Steam reforming. C) Biomass Pyrolysis. D) Coal Gasification. Show Answer Correct Answer: B) Steam reforming. 21. Why is inverted funnel arrangement is used to prepare hydrochloric acid? A) To increase back suction. B) To provide large surface area for absorption of HCl gas . C) To prevent back suction. D) To prevent back suction and provide large surface area for absorption of HCl gas. Show Answer Correct Answer: D) To prevent back suction and provide large surface area for absorption of HCl gas. 22. Hydrogen-oxygen mixture is ..... mixture A) Detonating mixture. B) Detective mixture. C) Deteneating mixture. D) None. Show Answer Correct Answer: A) Detonating mixture. 23. What is efficiency of existing vehicles using fossil fuels? A) 90. B) 50. C) 100. D) 75. Show Answer Correct Answer: B) 50. 24. Which of the following is a key advantage of hydrogen fuel cells over traditional combustion engines? A) Faster refueling time. B) Lower cost. C) Zero emissions. D) Higher energy density. Show Answer Correct Answer: C) Zero emissions. 25. Which of the following represents Metal + Alkali A) Zn + NaOH $\rightarrow$ Na2ZnO2 + H2. B) Zn + HCl $\rightarrow$ ZnCl2 + H2. C) All the above. D) None of the above. Show Answer Correct Answer: A) Zn + NaOH $\rightarrow$ Na2ZnO2 + H2. 26. When metal reacts with hydrogen it forms A) Metal hydrides. B) Metal hydroxide. C) Hydrogen gas. D) Metal oxide. Show Answer Correct Answer: A) Metal hydrides. 27. What is the reason for Cummins to venture into hydrogen engines? A) Rising popularity of electric vehicles. B) Regulations on natural gas engines. C) Increasing demand for sustainable engines. D) Decreasing demand for diesel engines. Show Answer Correct Answer: C) Increasing demand for sustainable engines. 28. What is the term used to represent the polarity of a bond? A) Covalent. B) Dipole-dipole. C) Ionic. D) Van der Waals. Show Answer Correct Answer: B) Dipole-dipole. 29. What is the formula for the radius of the nth orbit in the Bohr model of the hydrogen atom? A) $r_n = n^4 \times r_0$. B) $r_n = n^2 \times r_0$. C) $r_n = n \times r_0$. D) $r_n = n^3 \times r_0$. Show Answer Correct Answer: B) $r_n = n^2 \times r_0$. 30. The solution used to absorb hydrogen sulphide as an impurity from hydrogen gas A) Silver (I) nitrate. B) Lead (II) nitrate. C) Potassium hydroxide. D) None of the above. Show Answer Correct Answer: B) Lead (II) nitrate. 31. Mira is conducting an experiment in her chemistry lab to prepare hydrogen gas. She uses granulated ..... with dilute ..... A) Iron, HCl. B) Zn, HCl. C) All the above. D) None of the above. Show Answer Correct Answer: B) Zn, HCl. 32. What is the transition for Red? A) N=3 $\rightarrow$ n=2. B) N=5 $\rightarrow$ n=2. C) N=4 $\rightarrow$ n=2. D) N=6 $\rightarrow$ n=2. Show Answer Correct Answer: A) N=3 $\rightarrow$ n=2. 33. Industrially hydrogen peroxide is prepared by the auto oxidation of A) 2-alkylanthraquinols. B) 4-alkylanthraquinols. C) Both a and b. D) None of the above. Show Answer Correct Answer: A) 2-alkylanthraquinols. 34. What material is commonly used as the electrolyte in hydrogen-oxygen fuel cells? A) Sodium chloride. B) Sulfuric acid. C) Potassium hydroxide. D) Hydrochloric acid. Show Answer Correct Answer: C) Potassium hydroxide. 35. Name the fuel cell which uses solid ceramic oxides as the electrolyte . A) PAFC. B) SOFC. C) MCFC. D) None of the above. Show Answer Correct Answer: B) SOFC. 36. It is kept away from dust because dust can induce explosive decomposition of the compound. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: A) TRUE. 37. The element placed below hydrogen in group 1 A) Li. B) F. C) Na. D) K. Show Answer Correct Answer: A) Li. 38. Fuel cells produce A) Gasoline. B) Hydrogen Gas. C) Fossil Fuels. D) Electricity. Show Answer Correct Answer: D) Electricity. 39. A fuel cell converts facilitates the conversion between which two types of energy? A) Chemical to heat. B) Heat to electrical. C) Chemical to electrical. D) Electrical to chemical. Show Answer Correct Answer: C) Chemical to electrical. 40. Why is Granulated Zinc Preferred A) It is beautiful to see. B) It contains an impurity copper. C) It is pure. D) It is eatable. Show Answer Correct Answer: B) It contains an impurity copper. 41. What is geothermal energy? A) Energy derived from solar panels. B) Geothermal energy is the heat energy generated and stored in the Earth. C) Electricity generated from wind turbines. D) Fossil fuel combustion for power generation. Show Answer Correct Answer: B) Geothermal energy is the heat energy generated and stored in the Earth. 42. The gas which is oxidising as well as reducing agent A) Sulphur dioxide. B) Red lead. C) Bromine. D) Magnesium oxide. Show Answer Correct Answer: A) Sulphur dioxide. 43. How does hydrogen bonding affect the properties of water? A) Hydrogen bonding decreases water's boiling point. B) Hydrogen bonding causes water to freeze at higher temperatures. C) Hydrogen bonding causes water to have high surface tension, high specific heat, and unique density properties. D) Hydrogen bonding makes water a poor solvent. Show Answer Correct Answer: C) Hydrogen bonding causes water to have high surface tension, high specific heat, and unique density properties. 44. Whichtype of storage are already existing forcommercial application: A) Salt cavern. B) Depleted field. C) Lined Rock cavern. D) None of the above. Show Answer Correct Answer: A) Salt cavern. 45. Which subshell (shape) corresponds to l = 2 in the hydrogen atom? A) S. B) P. C) D. D) F. Show Answer Correct Answer: C) D. 46. Which element is supplied to the negative electrode of a fuel cell? A) Hydrogen. B) Nitrogen. C) Oxygen. D) None of the above. Show Answer Correct Answer: A) Hydrogen. 47. How does the presence of hydrogen bonds influence the melting point of a substance? A) The presence of hydrogen bonds increases the melting point of a substance. B) Hydrogen bonds decrease the melting point of a substance. C) Hydrogen bonds have no effect on the melting point. D) Hydrogen bonds only influence the boiling point, not the melting point. Show Answer Correct Answer: A) The presence of hydrogen bonds increases the melting point of a substance. 48. Can't react with dilute acids to liberate hydrogen A) Copper. B) Mercury. C) Copper, mercury and silver. D) None of the above. Show Answer Correct Answer: C) Copper, mercury and silver. 49. The greater the pOH, the smaller the concentration of A) OH-. B) H+. C) All the above. D) None of the above. Show Answer Correct Answer: A) OH-. 50. What technologies are used for storing hydrogen? A) Compressed gas storage, liquid hydrogen storage, metal hydrides, chemical hydrogen storage. B) Solar panels. C) Hydrogen fuel cells. D) Wind turbines. Show Answer Correct Answer: A) Compressed gas storage, liquid hydrogen storage, metal hydrides, chemical hydrogen storage. 51. If the hydrogen fuel cell was operating under acidic conditions, what electrolyte could be used? A) KOH. B) H$_{3}$PO$_{4}$. C) NH3. D) NaOH. Show Answer Correct Answer: B) H$_{3}$PO$_{4}$. 52. By definition, a substance needed for a reaction, yet not used up is a A) Sugar. B) Algae. C) Enzyme. D) None of the above. Show Answer Correct Answer: D) None of the above. 53. In a hydrogen fuel cell, what role does the electrolyte play? A) Conducts electrons. B) Separates hydrogen and oxygen. C) Facilitates ion movement. D) Stores energy. Show Answer Correct Answer: C) Facilitates ion movement. 54. What IMF best describes HBr? A) London Dispersion. B) Hydrogen Bond. C) Ionic. D) Dipole-Dipole. Show Answer Correct Answer: D) Dipole-Dipole. 55. What is a common challenge associated with hydrogen fuel cells? A) Limited availability of hydrogen. B) High emissions. C) High efficiency. D) Complexity of the technology. Show Answer Correct Answer: D) Complexity of the technology. 56. Which one of the following is formed when zinc reacts with sodium hydroxide? A) Hydrogen gas. B) Sodium zincate. C) Both. D) None of these. Show Answer Correct Answer: C) Both. 57. Hydrogen Fuel Cell are A) Pollution Free. B) More efficient than Combustion Power Plant. C) More efficient than Gasoline based Internal Combustion Engine. D) Have Noiseless / Silent Operation. E) All of the above. Show Answer Correct Answer: E) All of the above. 58. Which of the following is not the component of a fuel cell? A) A fuel electrode. B) Oxidant. C) Lead. D) None of the above. Show Answer Correct Answer: C) Lead. 59. What do cations adhere to? A) Anions. B) Anodes. C) Cathodes. D) All of the above. Show Answer Correct Answer: C) Cathodes. 60. Some trains and buses run on hydrogen gas A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 1Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 2Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 3Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 4Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 5Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 7Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 8Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books