Hydrogen Family MCQ Quiz CEE Nepal Hydrogen Family MCQ Quiz CEE Nepal Posted by Nepal Quiz الأربعاء، 2 أبريل 2025 _chemistry Quiz Hydrogen Family 1. Which isotope of hydrogen is the most abundant in nature? A) Deuterium B) Tritium C) Protium D) Heavy hydrogen Submit2. The chemical formula of heavy water is: A) H₂O B) D₂O C) T₂O D) HDO Submit3. Hydrogen molecule exists in which of the following forms? A) Atomic hydrogen B) Molecular hydrogen C) Ionic hydrogen D) All of the above Submit4. Which of the following processes is used for large-scale hydrogen production? A) Electrolysis of water B) Steam reforming of methane C) Decomposition of ammonia D) Photolysis of water Submit5. Which of the following metals does not react with hydrogen? A) Sodium B) Copper C) Calcium D) Magnesium Submit6. Hydrogen is placed in Group 1 because: A) It has one valence electron B) It forms ionic hydrides C) It is a non-metal D) It has an atomic number of 1 Submit7. Which of the following statements about hydrogen is incorrect? A) It has the lowest atomic mass B) It is a non-metal C) It does not form covalent bonds D) It is the lightest element Submit8. Which of the following is not a hydride? A) NaH B) CaH₂ C) H₂O D) CO₂ Submit9. What is the oxidation state of hydrogen in NaH? A) +1 B) -1 C) 0 D) +2 Submit10. Hydrogen is used as a fuel because: A) It is abundant B) It has high calorific value C) It produces less pollution D) All of the above Submit11. The major impurity in hydrogen produced by the electrolysis of water is: A) Oxygen B) Carbon dioxide C) Nitrogen D) Carbon monoxide Submit12. Hydrogen is stored as liquid at: A) High pressure B) Room temperature C) Low temperature D) Normal atmospheric conditions Submit13. Which of the following is a use of heavy water? A) Rocket fuel B) Nuclear reactor coolant C) Fertilizer D) Medicine Submit14. Hydrogen bonding is strongest in which of the following? A) H₂O B) NH₃ C) HF D) CH₄ Submit15. The most stable form of hydrogen at room temperature is: A) Atomic hydrogen B) Molecular hydrogen C) Ionic hydrogen D) None of the above Submit16. Which of the following metals reacts with both acids and hydrogen gas? A) Zinc B) Iron C) Platinum D) Copper Submit17. Which of the following substances can produce hydrogen gas when reacted with water? A) Copper B) Sodium C) Gold D) Lead Submit18. Hydrogenation reactions are commonly used in: A) Organic chemistry B) Electroplating C) Water purification D) Nuclear reactions Submit19. Which of the following elements does not show hydrogen bonding? A) Oxygen B) Nitrogen C) Sulfur D) Fluorine Submit20. Which of the following is not an isotope of hydrogen? A) Protium B) Deuterium C) Tritium D) Helium Submit21. Hydrogen bonding occurs between molecules containing which of the following elements? A) Sodium B) Oxygen C) Carbon D) Nitrogen Submit22. Which of the following is the method of preparing hydrogen gas in the laboratory? A) Electrolysis of water B) Heating sodium with water C) Heating calcium with water D) All of the above Submit23. Hydrogen reacts with chlorine to form: A) Hydrogen chloride B) Chlorine gas C) Hydrochloric acid D) Chlorine hydroxide Submit24. Which of the following is used to separate hydrogen gas from a mixture? A) Diffusion B) Filtration C) Distillation D) Absorption Submit25. Hydrogen is used in which of the following industrial processes? A) Manufacture of ammonia B) Production of sulfuric acid C) Manufacturing of steel D) All of the above Submit26. The bond dissociation enthalpy of H₂ is: A) Low B) High C) Zero D) Negative Submit27. The reducing nature of hydrogen can be best described by its ability to: A) Donate electrons B) Accept electrons C) Form covalent bonds D) None of the above Submit28. Hydrogenation of unsaturated fats results in the formation of: A) Saturated fats B) Oils C) Gases D) Water Submit29. Which of the following compounds contains the highest percentage of hydrogen by weight? A) Water B) Methane C) Hydrogen chloride D) Ammonia Submit30. In the reaction between hydrogen and oxygen, the product is: A) Water B) Hydrogen peroxide C) Hydrogen peroxide D) Ozone Submit31. Which of the following gases is commonly used as a hydrogen fuel? A) Natural gas B) Hydrogen gas C) Carbon dioxide D) Methane Submit32. Which is the primary component of the fuel used in hydrogen fuel cells? A) Oxygen B) Hydrogen C) Nitrogen D) Carbon Submit33. The density of hydrogen gas compared to air is: A) Greater B) Less C) Equal D) None of the above Submit34. The main environmental advantage of using hydrogen as a fuel is: A) It does not produce CO₂ emissions B) It is cheap C) It is abundant D) It produces water as a by-product Submit35. Which of the following statements is true about hydrogen's role in plants? A) It is essential for photosynthesis B) It acts as a catalyst C) It is used in nitrogen fixation D) It is not involved in any process in plants Submit36. Hydrogen gas is produced in which of the following reactions? A) Electrolysis of water B) Combustion of hydrogen C) Reaction of metals with acids D) All of the above Submit37. The bond length of H₂ is approximately: A) 0.74 Å B) 0.95 Å C) 1.09 Å D) 1.32 Å Submit38. In a hydrogen atom, the electrons are located in which shell? A) K shell B) L shell C) M shell D) N shell Submit39. What is the shape of the hydrogen molecule (H₂)? A) Linear B) Bent C) Tetrahedral D) Planar Submit40. Hydrogen's electron affinity is: A) High B) Low C) Zero D) Negative Submit41. Which of the following compounds is an example of hydrogen bonding? A) NaCl B) H₂O C) CO₂ D) NH₃ Submit42. Which of the following is the most important use of hydrogen in the chemical industry? A) Hydrogenation B) Dehydrogenation C) Electroplating D) Water purification Submit43. Hydrogen is most commonly used in which of the following energy applications? A) Nuclear power plants B) Hydrogen fuel cells C) Wind energy D) Hydroelectric plants Submit44. The boiling point of hydrogen is: A) -252.87°C B) -196.4°C C) -100°C D) 0°C Submit45. Which of the following reactions produces hydrogen as a by-product? A) Steam reforming of methane B) Electrolysis of water C) Reaction of sodium with water D) All of the above Submit46. Which of the following is a common test for the presence of hydrogen gas? A) Flame test B) Litmus test C) Pop test D) Iodine test Submit47. The atomic number of hydrogen is: A) 1 B) 2 C) 6 D) 8 Submit48. The chemical symbol of hydrogen is: A) He B) H C) Hy D) Ho Submit49. What is the first ionization energy of hydrogen? A) 13.6 eV B) 2.2 eV C) 5.1 eV D) 3.5 eV Submit50. Hydrogen was discovered by: A) Lavoisier B) Boyle C) Cavendish D) Newton Submit
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