This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 9 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following metals does not give hydrogen with acids? A) Iron. B) Copper. C) Zinc. D) Magnesium. Show Answer Correct Answer: B) Copper. 2. Which product below completes the equation? 2Al+ 3H$_{2}$SO$_{4-> }$ A) Al$_{2}$(SO$_{4}$)$_{3}$ + 3H$_{2}$. B) Al$_{2}$(SO$_{4}$)$_{3}$ + 4H$_{2}$. C) Al$_{2}$(SO$_{4}$)$_{3}$ + H$_{2}$. D) None of the above. Show Answer Correct Answer: A) Al$_{2}$(SO$_{4}$)$_{3}$ + 3H$_{2}$. 3. What property of water is responsible for skipping rocks on a pond? A) Adhesion. B) Cohesion. C) Evaporative Cooling. D) Less Dense as Solid. Show Answer Correct Answer: B) Cohesion. 4. When silver nitrate solution reacts with hydrochloric acid, it gives a thick curdy white ppt. which is soluble in A) Sodium hydroxide. B) Ammonium hydroxide. C) Calcium hydroxide. D) None of the above. Show Answer Correct Answer: B) Ammonium hydroxide. 5. Which equation allows the calculation of the hydrogen ion concentration if the pH of a solution is known? A) [H$^{+}$] = 10$^{-log(pH)}$. B) [H$^{+}$] = 10$^{-(pH)}$. C) [H$^{+}$] = 10$^{(pH)}$. D) [H$^{+}$] =-log(pH). Show Answer Correct Answer: B) [H$^{+}$] = 10$^{-(pH)}$. 6. What is the efficiency of hydrogen fuel cells compared to combustion engines? A) Hydrogen fuel cells are 80% efficient, while combustion engines are 40% efficient. B) Hydrogen fuel cells are approximately 60% efficient, compared to 20-30% for combustion engines. C) Both hydrogen fuel cells and combustion engines are equally efficient at 50%. D) Hydrogen fuel cells have a lower efficiency than combustion engines at 15%. Show Answer Correct Answer: B) Hydrogen fuel cells are approximately 60% efficient, compared to 20-30% for combustion engines. 7. Hydrogen bonding occurs when a hydrogen atom bonded to N, O, or F is attracted to another molecule's N, O or F atom. Which of the following can participate in hydrogen bonding? A) CBr$_{4}$. B) NO$_{2}$. C) H$_{2}$S. D) NH$_{3}$. Show Answer Correct Answer: D) NH$_{3}$. 8. What is aqua regia? A) Mixture of 3 parts of HNO$_{3}$ and 1 part of conc HCl. B) Mixture of 1 part of HNO$_{3}$ and 2 parts of conc HCl. C) Mixture of 1 part of HNO$_{3}$ and 3 parts of conc HCl. D) None of the above. Show Answer Correct Answer: C) Mixture of 1 part of HNO$_{3}$ and 3 parts of conc HCl. 9. Describe the difference between a strong and weak hydrogen bond. A) Strong hydrogen bonds are always longer than weak ones. B) Weak hydrogen bonds are stronger due to lower electronegativity. C) Strong hydrogen bonds do not involve electronegativity differences. D) Strong hydrogen bonds are shorter and stronger due to high electronegativity, while weak hydrogen bonds are longer and weaker. Show Answer Correct Answer: D) Strong hydrogen bonds are shorter and stronger due to high electronegativity, while weak hydrogen bonds are longer and weaker. 10. Which has the SHORTEST wavelength and, therefore, the highest frequency/most energy A) Radio waves. B) Ultraviolet Rays. C) Gamma Rays. D) X-rays. Show Answer Correct Answer: C) Gamma Rays. 11. During electrolysis of water, hydrogen is collected at A) Anode. B) Cathode. C) Positive electrode. D) None of the above. Show Answer Correct Answer: B) Cathode. 12. By 2025 in California, What percentage of vehicles are expected to have zero emission? A) 15. B) 80. C) 20. D) 45. Show Answer Correct Answer: A) 15. 13. Which method of hydrogen production is considered 'green' when powered by renewable energy? A) Steam methane reforming. B) Coal gasification. C) Electrolysis of water. D) Natural gas extraction. Show Answer Correct Answer: C) Electrolysis of water. 14. London dispersion forces are stronger between atoms or molecules with more electrons, and weaker between atoms or molecules with fewer electrons. Which of the following has the strongest London dispersion forces? A) F$_{2}$. B) Br$_{2}$. C) I$_{2}$. D) Cl$_{2}$. Show Answer Correct Answer: C) I$_{2}$. 15. Whats Hydrogen's atomic number? A) 2. B) 11. C) 22. D) 1. Show Answer Correct Answer: D) 1. 16. The enthalpy of vapourisation is for H2O is ..... than heavy water A) GREATER. B) SMALLER. C) EQUAL. D) None of the above. Show Answer Correct Answer: B) SMALLER. 17. What is meant by delocalised electron? A) Valence electron. B) Sea of electrons. C) Electrons that are free to move. D) Negatively-charged ion that are free to move. Show Answer Correct Answer: C) Electrons that are free to move. 18. The product of the [H+] and the [OH-] is always ..... A) Less than 1 x 10$^{-7}$. B) Greater than 1 x 10$^{-7}$. C) 1 x 10$^{-14}$. D) A neutral solution. Show Answer Correct Answer: C) 1 x 10$^{-14}$. 19. CuO+ H2 ..... $\rightarrow$ Cu + H2O, here H is a A) Oxidising agent. B) Reducing agent. C) None. D) None of the above. Show Answer Correct Answer: B) Reducing agent. 20. Which metal is considered to have a "unique nature" in the context of hydrogen preparation because it can react with both acids and strong alkalis to produce hydrogen gas? A) Lead. B) Iron. C) Copper. D) Zinc. Show Answer Correct Answer: D) Zinc. 21. Where are hydrogen bonds in proteins?Note:There is more than one answer to this. Focus on the place where ONLY hydrogen bonds exist. A) Between amino acids. B) Between backbone. C) Between the R groups. D) Between polypeptides. Show Answer Correct Answer: B) Between backbone. 22. The chemical behaviour of dihydrogen (and for that matter any molecule) is determined, to a large extent, by A) Bond dissociation enthalpy. B) Bond association enthalpy. C) Vaporisation enthalpy. D) Bonding energy. Show Answer Correct Answer: A) Bond dissociation enthalpy. 23. Why has hydrogen not been widely adopted as a fuel in the past? A) Due to its high production costs and inefficiency without renewables. B) Lack of technological advancements. C) Public perception of its safety. D) It was not considered a viable energy source. Show Answer Correct Answer: A) Due to its high production costs and inefficiency without renewables. 24. A:Urea acts as a stabilizer B:dust can induce explosive decomposition of NH3 A) A and B are incorrect. B) A is only correct. C) B is only correct. D) A and B are correct but B is not the correct explanation of A. Show Answer Correct Answer: D) A and B are correct but B is not the correct explanation of A. 25. Polar molecules A) Have even charge density. B) Are symmetric. C) Form hydrogen bonds. D) Have 10 atoms per molecule. Show Answer Correct Answer: C) Form hydrogen bonds. ← 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 7Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 8Class 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