This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is a major advantage of hydrogen fuel cells over traditional fossil fuels? A) Higher energy density. B) Zero emissions. C) Lower cost. D) Easier storage. Show Answer Correct Answer: B) Zero emissions. 2. Molar ration of nitrogen to hydrogen as reactants in the Haber process. A) 1:2. B) 1:3. C) 2:1. D) 3:1. Show Answer Correct Answer: B) 1:3. 3. Reaction between conc.HCl and MnO$_{2 }$ produces greenish yellow gas which turns moist starch iodide paper blue black, the gas is A) Chlorine. B) Hydrogen. C) Oxygen. D) None of the above. Show Answer Correct Answer: A) Chlorine. 4. Hydrogen is classified as an A) Element. B) Compound. C) All the above. D) None of the above. Show Answer Correct Answer: A) Element. 5. Is Sodium lighter than water? A) YES. B) NO. C) NOT REALLY. D) DEPENDING ON THE NATURAL STATE. Show Answer Correct Answer: A) YES. 6. What is the main postulate of the Bohr model regarding electron orbits? A) Electrons orbit the nucleus in fixed paths called energy levels. B) Electrons move randomly around the nucleus. C) Electrons are embedded in a positive sphere. D) Electrons do not exist in the atom. Show Answer Correct Answer: A) Electrons orbit the nucleus in fixed paths called energy levels. 7. What is the significance of hydrogen bonding in the secondary structure of proteins? A) It stabilizes the alpha helix and beta sheet structures. B) It forms the primary structure of proteins. C) It breaks down protein structures. D) It is irrelevant to protein structure. Show Answer Correct Answer: A) It stabilizes the alpha helix and beta sheet structures. 8. Which of the following is not true about sulphur dioxide, SO$_{2}$? A) SO$_{2}$ can act as an oxidising agent. B) SO$_{2}$ can act as a reducing agent. C) SO$_{2}$ is released in the combustion of fossil fuels. D) SO$_{2}$ is a basic gas. Show Answer Correct Answer: D) SO$_{2}$ is a basic gas. 9. In an H-bond, why does hydrogen become very positive compared to other elements? A) Its electron is held to one side of the nucleus leaving the other side completely expose. B) Its electron is held on both sides of the nucleus. C) Its two electrons are held on one side of the nucleus leaving the other side completely exposed. D) Its two electrons are held on both side of the nucleus. Show Answer Correct Answer: A) Its electron is held to one side of the nucleus leaving the other side completely expose. 10. Solid HCl melts at ..... A) 113$^{0}$C. B) 114$^{0}$C. C) 115$^{0}$C. D) None of the above. Show Answer Correct Answer: A) 113$^{0}$C. 11. When the concentration of hydrogen ions in a solution is decreased by a factor of ten, the pH of the solution A) Increases by 1. B) Increases by 10. C) Decreases by 1. D) Decreases by 10. Show Answer Correct Answer: A) Increases by 1. 12. What are the different types of geothermal energy systems? A) Ground Source Heat Pumps, Direct Use Systems, Geothermal Power Plants (Dry Steam, Flash Steam, Binary Cycle). B) Solar Thermal Systems. C) Hydroelectric Power Stations. D) Wind Energy Turbines. Show Answer Correct Answer: A) Ground Source Heat Pumps, Direct Use Systems, Geothermal Power Plants (Dry Steam, Flash Steam, Binary Cycle). 13. What is the transition for Violet? A) N=3 $\rightarrow$ n=2. B) N=4 $\rightarrow$ n=2. C) N=5 $\rightarrow$ n=2. D) N=6 $\rightarrow$ n=2. Show Answer Correct Answer: D) N=6 $\rightarrow$ n=2. 14. Why can hydrogen not be collected through downward displacement of air? A) Because it has a reactive explosion with air. B) Because hydrogen is practically insoluble in water. C) Water removes impurities. D) None of the above. Show Answer Correct Answer: A) Because it has a reactive explosion with air. 15. Why is it difficult to wash oil from your hands with plain water? A) Both substances are polar. Like polarities repel. B) Both substances are nonpolar. Like polarities repel. C) Water is nonpolar, and oil is polar, so they will not combine. D) Water is polar, and oil is nonpolar, so they will not combine. Show Answer Correct Answer: D) Water is polar, and oil is nonpolar, so they will not combine. 16. Metal which can give hydrogen gas even with nitric acid A) Ca. B) Mg. C) Na. D) K. Show Answer Correct Answer: B) Mg. 17. Why do coastal regions tend to be cooler? A) Due to high specific heat of water. B) Due to low specific heat of water. C) Due to high density of water. D) Due to low density of water. Show Answer Correct Answer: A) Due to high specific heat of water. 18. All thehydrogen stored in a porous reservoiraquifer or depleted field ) is recoverable: A) False. B) True. C) All the above. D) None of the above. Show Answer Correct Answer: A) False. 19. How can dative bond form between ammonia, NH$_{3}$ and hydrogen ion, H$^{+}$ to form ammonium ion, NH$_{4}$$^{+}$? A) Ammonia, NH$_{3}$ and hydrogen ion, H$^{+}$ will each share one electron. B) The pair of electrons not involved in covalent bond in ammonia, NH$_{3}$ will be shared with hydrogen ion, H$^{+}$. C) Ammonia, NH$_{3}$ and hydrogen ion, H$^{+}$ will each share one electron. D) None of the above. Show Answer Correct Answer: B) The pair of electrons not involved in covalent bond in ammonia, NH$_{3}$ will be shared with hydrogen ion, H$^{+}$. 20. How do hydrogen bonds contribute to the unique properties of ice? A) Hydrogen bonds create a stable lattice structure in ice, making it less dense than water, allowing it to float. B) Hydrogen bonds increase the temperature of ice, causing it to melt faster. C) Hydrogen bonds make ice denser than water, causing it to sink. D) Hydrogen bonds prevent ice from forming a solid structure, making it liquid. Show Answer Correct Answer: A) Hydrogen bonds create a stable lattice structure in ice, making it less dense than water, allowing it to float. 21. Which city do the waters of the Catawba River run as they enter the ocean? A) Savannah. B) Myrtle Beach. C) Wilmington. D) Charleston. Show Answer Correct Answer: D) Charleston. 22. Only polar molecules with H-F, H-N, or H-O bonds feel this kind of Intermolecular forces A) Hydrogen Bonding. B) Dipole-dipole forces. C) London dispersion forces. D) None of the above. Show Answer Correct Answer: A) Hydrogen Bonding. 23. Which of the following is not an use of oxygen? A) For cutting metals. B) In hospitals. C) As fuel for cars. D) For respiration. Show Answer Correct Answer: C) As fuel for cars. 24. Which one of the following statements about water is false? A) Water is oxidized to oxygen during photosynthesis. B) Water can act both as an acid and as a base. C) There is extensive intramolecular hydrogen bonding in the condensed phase. D) Ice formed by heavy water sinks in normal water. Show Answer Correct Answer: C) There is extensive intramolecular hydrogen bonding in the condensed phase. 25. Why is water NOT on the periodic table? A) It is naturally occuring. B) It is a compound, not an element. C) It exists as a solid, a liquid, and a gas. D) Its chemical formula doesn't fit. Show Answer Correct Answer: B) It is a compound, not an element. ← PreviousNext →Related 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 6Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 8Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 9Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 10Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books