This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 5 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Compared to a solution with a pH value of 7, a solution with a thousand times greater hydronium ion concentration has a pH value of A) 10. B) 7. C) 3. D) 4. Show Answer Correct Answer: D) 4. 2. What is a hydrogen bond? A) A bond between two hydrogen atoms and an electronegative atom. B) A covalent bond involving hydrogen and an electronegative atom. C) A weak attraction between a hydrogen atom and an electronegative atom. D) A type of ionic bond and an electronegative atom. Show Answer Correct Answer: C) A weak attraction between a hydrogen atom and an electronegative atom. 3. The synonym for water gas, when used in the production of methanol, is A) Fuel gas. B) Natural gas. C) Laughing gas. D) Syn gas. Show Answer Correct Answer: D) Syn gas. 4. Name the electrolyte used in MCFC . A) KOH. B) CO3$^{2-}$. C) O$^{2-}$. D) None of the above. Show Answer Correct Answer: B) CO3$^{2-}$. 5. Metal which sink into water first then float A) Na. B) K. C) Cu. D) Ca. Show Answer Correct Answer: D) Ca. 6. Ice has ..... density as compared to water. A) Higher. B) Lower. C) The same. D) None of the above. Show Answer Correct Answer: B) Lower. 7. How do two strands of DNA bind to create a double helix? A) Through covalent bonds between the nitrogenous bases. B) Through hydrogen bonds between the nitrogenous bases. C) Through hydrogen bonds between the sugar molecules. D) Through covalent bonds between the deoxyribose sugars. Show Answer Correct Answer: B) Through hydrogen bonds between the nitrogenous bases. 8. Liquid ethylene (C$_{2}$H$_{2}$) molecules are nonpolar and do not experience hydrogen bonding, liquid water (H$_{2}$O) molecules are polar and experience hydrogen bonding. Which liquid will have a higher boiling point? A) Water. B) Ethylene. C) Water and ethylene have the same boiling point. D) None of the above. Show Answer Correct Answer: A) Water. 9. When an electron moves from n=4 to n=1, what wavelength of energy is emitted? A) 97 nm. B) 434 nm. C) 410 nm. D) 1282 nm. Show Answer Correct Answer: A) 97 nm. 10. The following equation represents what goes on during a hydrogen cell ..... 2H $_{2}$ + O $_{2}$ $\rightarrow$ 2H $_{2}$O A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 11. Calgon's process is used to remove ..... hardness. A) Permanent. B) Temporary. C) Both. D) None of these. Show Answer Correct Answer: A) Permanent. 12. What is the strongest type of intermolecular force one H$_{2}$S molecule will exhibit? A) Dipole-dipole attraction. B) London dispersion forces. C) H-bonds. D) Ionic bonds. Show Answer Correct Answer: A) Dipole-dipole attraction. 13. In which of the following biological molecules is hydrogen bonding most critical? A) Lipids. B) Proteins. C) Carbohydrates. D) Nucleic acids. Show Answer Correct Answer: D) Nucleic acids. 14. ..... metals such as Zn, Al, Tin (Sn), and lead (Pb) liberate hydrogen from hot, concentrated solutions of ..... A) Amphoteric, alkalis. B) Esoteric, acids. C) Amphoteric, acids. D) None of the above. Show Answer Correct Answer: A) Amphoteric, alkalis. 15. The bonds that are broken when water vaporizes are A) Ionic bonds. B) Hydrogen bonds between water molecules. C) Covalent bonds between atoms within water molecules. D) Polar covalent bonds. E) Nonpolar covalent bonds. Show Answer Correct Answer: B) Hydrogen bonds between water molecules. 16. What is the PH range for Basic? A) 0-6. B) 7-8. C) 5-10. D) 9-14. Show Answer Correct Answer: D) 9-14. 17. In 16th Century he unknowingly observed that a gas i produced when acids reacts with metals A) Paracelsus. B) Robert Boyle. C) Henry Cavendish. D) Antoine-Lavoisier. Show Answer Correct Answer: A) Paracelsus. 18. By the electrolysis of water, hydrogen is collected on a ..... A) Large scale. B) Small scale. C) All the above. D) None of the above. Show Answer Correct Answer: A) Large scale. 19. Why are fuel cell vehicles better than conventional. A) It uses hydrogen not fossil fuels for the fuel. B) All of the above. C) It has no tail pipe emissions. D) Can go twice as far as a conventional vehicle on 1 gallon. Show Answer Correct Answer: B) All of the above. 20. What happens when hydrogen burns in the air? A) Produces oxygen. B) It releases carbon dioxide. C) It produces methane. D) It forms water. Show Answer Correct Answer: D) It forms water. 21. Which of the following is true about London dispersion forces? A) They are stronger than hydrogen bonds. B) They are proportional to the molar mass. C) They do not affect boiling points. D) They are the only forces in polar molecules. Show Answer Correct Answer: B) They are proportional to the molar mass. 22. Name the ocean that the waters of the Catawba River run. A) Arctic. B) Pacific. C) Indian. D) None of these. Show Answer Correct Answer: D) None of these. 23. In general, substances with stronger intermolecular forces have ..... boiling points than those with weaker intermolecular forces A) Higher. B) Lower. C) All the above. D) None of the above. Show Answer Correct Answer: A) Higher. 24. Which isotope of Hydrogen emits low energy $\beta$-particles A) Tritium. B) Deuterium. C) Protium. D) None of the Above. Show Answer Correct Answer: A) Tritium. 25. The hydrogen bonds between water molecules are: A) Strong covalent bonds. B) Weak electrostatic attractions. C) Ionic bonds. D) Hydrophobic interactions. Show Answer Correct Answer: B) Weak electrostatic attractions. ← 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 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 10Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books