This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen – Quiz 47 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 47 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the pH of a 0.15 M solution of HClO$_{4}$? A) 0.82. B) 13.18. C) 0.15. D) 1. Show Answer Correct Answer: A) 0.82. 2. What is considered a Hydrogen Bond? A) H-Pb. B) H-Fe. C) H-O. D) All of the above. Show Answer Correct Answer: C) H-O. 3. Methylamine is a derivative of ammonia. In methylamine, the hydrogen bond is present between hydrogen and nitrogen. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. Water has an unusually high boiling point for a molecular compound because it has A) Hydrogen bonding. B) Ion-ion attractions. C) A high density. D) A large gram formula mass. Show Answer Correct Answer: A) Hydrogen bonding. 5. Which of these pH numbers indicates the highest level of acidity? A) 5. B) 8. C) 12. D) 10. Show Answer Correct Answer: A) 5. 6. What is the range for Neutral A) 7-8. B) 8-16. C) 4-8. D) 0-6. Show Answer Correct Answer: A) 7-8. 7. What is the energy of an electron in the first orbit of a hydrogen atom according to the Bohr model? A) $-13.6 \, \text{eV}$. B) $-3.4 \, \text{eV}$. C) $-1.51 \, \text{eV}$. D) $0 \, \text{eV}$. Show Answer Correct Answer: A) $-13.6 \, \text{eV}$. 8. Modern generation vehicles are powered by what resources? A) Hydrogen. B) Oxygen. C) Sunlight. D) All of these. Show Answer Correct Answer: D) All of these. 9. Fuel cells cars are safet then regular cars. A) True, because the engine is smaller. B) False, because boiling hot water can burn you. C) False, because they can be explosive. D) True, because there are much less moving parts in the engine. Show Answer Correct Answer: D) True, because there are much less moving parts in the engine. 10. Coordinates bonds are also called ..... A) Ionic bonds. B) Covalent bonds. C) Dative bonds. D) Metallic bonds. Show Answer Correct Answer: C) Dative bonds. 11. What is the main challenge in the widespread adoption of hydrogen fuel cells for vehicles? A) High cost of hydrogen production. B) Lack of refueling infrastructure. C) Low energy efficiency. D) High emissions. Show Answer Correct Answer: B) Lack of refueling infrastructure. 12. The volume of oxygen evolved at STP by decomposition of 0.68 g hydrogen peroxide solution is: A) 2.24 mL. B) 22.4 mL. C) 224 mL. D) 2240 mL. Show Answer Correct Answer: C) 224 mL. 13. The polarity of water allows it to ..... other polar substances. A) Dissolve. B) Freeze. C) Heat. D) H+ O-. Show Answer Correct Answer: A) Dissolve. 14. Why is water considered a polar molecule? A) Water is polar due to the equal sharing of electrons between hydrogen and oxygen. B) Water's polarity is caused by its high boiling point. C) Water is a polar molecule due to its bent shape and the difference in electronegativity between oxygen and hydrogen. D) Water is nonpolar because it has a symmetrical shape. Show Answer Correct Answer: C) Water is a polar molecule due to its bent shape and the difference in electronegativity between oxygen and hydrogen. 15. Removal of electronegative ion is A) Reduction. B) Oxidation. C) Can be both. D) None. Show Answer Correct Answer: A) Reduction. 16. How does hydrogen bonding affect the density of ice compared to liquid water? A) Ice is denser than liquid water. B) Ice is less dense than liquid water. C) Ice and liquid water have the same density. D) Density varies with temperature. Show Answer Correct Answer: B) Ice is less dense than liquid water. 17. Explain the concept of enzyme inhibition and its impact on catalase activity. A) Enzyme inhibition has no impact on catalase activity. B) Enzyme inhibition only affects other enzymes, not catalase. C) Enzyme inhibition can reduce the activity of catalase, leading to a slower decomposition of hydrogen peroxide. D) Enzyme inhibition increases the activity of catalase. Show Answer Correct Answer: C) Enzyme inhibition can reduce the activity of catalase, leading to a slower decomposition of hydrogen peroxide. 18. Hydrogen reacts with molten sulphur to form: A) HSO3. B) H$_{2}$SO$_{4}$. C) H$_{2}$SO$_{3}$. D) H$_{2}$S. Show Answer Correct Answer: D) H$_{2}$S. 19. Which is the correct order of second ionization potential of C, N, O and F in the following? A) O > F > N > C. B) O > N > F > C. C) C > N > O > F. D) F > O > N > C. Show Answer Correct Answer: A) O > F > N > C. 20. Pressure remaining constant-the volume of a given mass of dry gas is inversely proportional to its absolute temperature. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 21. When the pH of an aqueous solution is changed from 1 to 2, the concentration of hydronium ions in the solution is A) Decreased by a factor of 2. B) Decreased by a factor of 10. C) Increased by a factor of 2. D) Increased by a factor of 10. Show Answer Correct Answer: B) Decreased by a factor of 10. 22. Current enters the electrolyte through the A) Cathode. B) Anode. C) None. D) None of the above. Show Answer Correct Answer: B) Anode. 23. Hydrogen can be prepared in the laboratory by reacting zinc with: A) Sulphuric acid. B) Sodium chloride. C) Calcium hydroxide. D) Nitric acid. Show Answer Correct Answer: A) Sulphuric acid. 24. ..... is used as a catalyst in manufacture of ammonia. A) Iron. B) Molybdenum. C) Chromic oxide. D) None of the above. Show Answer Correct Answer: A) Iron. 25. The structure of H2O2 is A) Open book like. B) Closed book like. C) Pyramidal. D) Linear. Show Answer Correct Answer: A) Open book like. ← 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 9Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books