This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Chemistry Part Ii > Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 9 Hydrogen Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Hydrochloric acid dissolves the ..... present in bones A) Calcium oxide. B) Calcium phosphate. C) Hydrogen phosphate. D) None of the above. Show Answer Correct Answer: B) Calcium phosphate. 2. Detonating mixture A) Hydrogen oxygen mixture. B) An explosive. C) Hydrogen oxygen mixture and is explosive in nature. D) None of the above. Show Answer Correct Answer: C) Hydrogen oxygen mixture and is explosive in nature. 3. Which country is planning on using hydrogen vehicles more than batteries in the future? A) United States. B) South Korea. C) China. D) Japan. Show Answer Correct Answer: D) Japan. 4. [CO + H2] + H2O $\rightarrow$ CO2 + H2 the given reaction represents A) Passing stream over red hot coke. B) Water gas shift reaction. C) All the above. D) None of the above. Show Answer Correct Answer: B) Water gas shift reaction. 5. Which of the following statement is not correct for the element having electronic configuration 1s2, 2s2p6, 3s1 A) It has low electron affinity. B) It is a monovalent electropositiveclear. C) It forms basic oxideclear. D) It is a non-metaldone. Show Answer Correct Answer: D) It is a non-metaldone. 6. What is the occurrence of Hydrogen? A) Free State. B) Combined State. C) Both. D) None of the above. Show Answer Correct Answer: C) Both. 7. Covalent bonding occurs between what? A) Non metal and non metal. B) Metal and metal. C) Chemical and ions. D) Isotopes and liquids. Show Answer Correct Answer: A) Non metal and non metal. 8. What is the transition for Blue? A) N=4 $\rightarrow$ n=2. B) N=5 $\rightarrow$ n=2. C) N=3 $\rightarrow$ n=2. D) N=6 $\rightarrow$ n=2. Show Answer Correct Answer: B) N=5 $\rightarrow$ n=2. 9. A covalent bond is a chemical bond where two atoms share ..... A) Valence electrons. B) Neutrons. C) The same group on the periodic table. D) Protons. Show Answer Correct Answer: A) Valence electrons. 10. How do you define electronegativity? A) Measure of the tendency of an atom to attract a bonding pair of electrons. B) Measure of the tendency of an atom to repel a bonding pair of electrons. C) Measure of the attractive force between hydrogen and a neighbouring atom. D) Measure of the amount of sharing capability of electrons. Show Answer Correct Answer: A) Measure of the tendency of an atom to attract a bonding pair of electrons. 11. Why does water have a higher boiling point than methane? A) Water boils at a lower temperature than methane. B) Methane has stronger intermolecular forces than water. C) Methane is a polar molecule, while water is nonpolar. D) Water has a higher boiling point than methane due to hydrogen bonding. Show Answer Correct Answer: D) Water has a higher boiling point than methane due to hydrogen bonding. 12. In which of the following pairs, electron gain enthalpies of constituent elements are nearly the same or identical?(A) Rb and Cs(B) Na and K(C) Ar and Kr(D) I and AtChoose the correct answer from the options given below: A) A and B. B) B and C. C) A and C. D) C and D. Show Answer Correct Answer: C) A and C. 13. What is the name of the catalyst used in the contact process? A) Vanadium(V) oxide. B) Molybdenum. C) Nickel. D) Iron. Show Answer Correct Answer: A) Vanadium(V) oxide. 14. The freezing point of heavy water is A) 4$^\circ$C. B) 0$^\circ$C. C) 1$^\circ$C. D) 3.8$^\circ$C. Show Answer Correct Answer: D) 3.8$^\circ$C. 15. Which of the following appear to be clear (are not cloudy)? A) Solution. B) Suspension. C) Colloid. D) None of the above. Show Answer Correct Answer: A) Solution. 16. What explains the very high melting and boiling point of water A) Strong dipole-dipole bonds between water molecules. B) Strong hydrogen bonds between water molecules. C) Dispersion forces which are present in all molecules. D) Asymmetrical shape of the polar bonds. Show Answer Correct Answer: B) Strong hydrogen bonds between water molecules. 17. The physical property of water that allows it to stick to ther polar substances is referred to as: A) Cohesion. B) Adhesion. C) Van der Waals Forces. D) Ionic bonding. Show Answer Correct Answer: B) Adhesion. 18. Why don't we use Nitric acid in preparation of Hydrogen gas? A) Because nitric acid oxidizes hydrogen to water. B) It forms a coating and the reaction is stopped. C) No hydrogen gas is produced. D) I don'tknow. Show Answer Correct Answer: A) Because nitric acid oxidizes hydrogen to water. 19. Water's polarity is primarily due to: A) Unequal sharing of electrons between hydrogen and oxygen. B) Equal sharing of electrons between hydrogen and oxygen. C) The presence of only oxygen atoms in the water molecule. D) The absence of hydrogen atoms in the water molecule. Show Answer Correct Answer: A) Unequal sharing of electrons between hydrogen and oxygen. 20. Hydrogen fluoride is a liquid unlike other hydrogen halides since: A) Hydrogen fluoride molecules associate due to hydrogen bonding. B) Fluorine is highly reactive. C) Hydrogen fluoride is the weakest acid of all hydrogen halides. D) None of the above. Show Answer Correct Answer: A) Hydrogen fluoride molecules associate due to hydrogen bonding. 21. The partial negative charge at one end of a water molecule is attracted to a partial positive charge of another water molecule. What is this type of attraction called? A) A hydrogen bond. B) An ionic bond. C) A hydration shell. D) A polar covalent bond. Show Answer Correct Answer: A) A hydrogen bond. 22. Lighter shades (blond) are caused by which pigment? A) Eumelanin. B) Melanin. C) Pheomelanin. D) No pigment. Show Answer Correct Answer: C) Pheomelanin. 23. A fuel cell is used to convert chemical energy into ..... A) Mechanical energy. B) Electrical energy. C) Potential energy. D) None of the above. Show Answer Correct Answer: B) Electrical energy. 24. In a laboratory experiment, which of the following substances would you expect to have the highest surface tension due to hydrogen bonding? A) Ethanol. B) Acetone. C) Water. D) Methanol. Show Answer Correct Answer: C) Water. 25. Choose the correct option:-Hydrogen reacts with active metals to form these. A) Metal Hydrides. B) Metal Carbonates. C) Nitrates. D) Sulfates. Show Answer Correct Answer: A) Metal Hydrides. 26. H2O2 is the hydride of A) O2. B) H2O. C) Both. D) None of them. Show Answer Correct Answer: A) O2. 27. Which of the following substances is used as a drying agent for hydrogen gas? A) Concentrated sulphuric acid. B) Quicklime (CaO). C) Silica gel. D) Calcium chloride. Show Answer Correct Answer: D) Calcium chloride. 28. The pH of a strong acid would be: A) 12-13. B) 5-6. C) 8-9. D) 1-2. Show Answer Correct Answer: D) 1-2. 29. Which statement describes characteristics of a 0.01 M KOH(aq) solution? A) The solution is acidic with a pH less than 7. B) The solution is basic with a pH greater than 7. C) The solution is acidic with a pH greater than 7. D) The solution is basic with a pH less than 7. Show Answer Correct Answer: B) The solution is basic with a pH greater than 7. 30. What is fed into the cathode compartment of the hydrogen fuel cell? A) Hydrogen gas. B) Oxygen gas. C) Water. D) None of the above. Show Answer Correct Answer: B) Oxygen gas. 31. Explain how hydrogen bonds influence the boiling point of water. A) Hydrogen bonds increase the boiling point of water by decreasing the energy required to break them. B) Hydrogen bonds have no effect on the boiling point of water. C) Hydrogen bonds raise the boiling point of water by requiring more energy to break the strong intermolecular forces. D) Hydrogen bonds lower the boiling point of water by weakening intermolecular forces. Show Answer Correct Answer: C) Hydrogen bonds raise the boiling point of water by requiring more energy to break the strong intermolecular forces. 32. What is the effect of temperature on hydrogen bonding? A) Temperature has no effect on hydrogen bonding. B) Lower temperatures weaken hydrogen bonding. C) Higher temperatures weaken hydrogen bonding. D) Higher temperatures strengthen hydrogen bonding. Show Answer Correct Answer: C) Higher temperatures weaken hydrogen bonding. 33. What is the main factor that determines the boiling point of a substance? A) Hydrogen bonding. B) Ionic bonding. C) Dispersion interactions. D) Dipole-dipole interactions. Show Answer Correct Answer: A) Hydrogen bonding. 34. What is the difference between a battery and a fuel cell? A) Fuel cells are cheaper than batteries. B) A fuel cell can be used only in a car, while batteries have lots of uses. C) A battery eventually dies, but a fuel cell continually recharges itself. D) None of the above. Show Answer Correct Answer: C) A battery eventually dies, but a fuel cell continually recharges itself. 35. What is the test for Oxygen gas? A) Red flame. B) Glowing splint. C) Litmus paper. D) "Pop" sound. Show Answer Correct Answer: B) Glowing splint. 36. Commercially H is prepared by A) Bosch process. B) Ostwald process. C) Both. D) None of the above. Show Answer Correct Answer: A) Bosch process. 37. Hydrogen has isotopes A) 5. B) 3. C) 2. D) 4. Show Answer Correct Answer: B) 3. 38. A:Dihydrogen is inert in natureB:It has high H-H bond enthalpy. A) A is true but B is false. B) A is false but B is true. C) A and B are true but B is not the correct explanation of A. D) A and B are true and B is correct explanation of A. Show Answer Correct Answer: D) A and B are true and B is correct explanation of A. 39. Which of the following quantum numbers describes the size of an atomic orbital? A) "n". B) "l". C) Size of orbital is not define. D) "m". Show Answer Correct Answer: A) "n". 40. Which is the strongest intermolecular force below" A) Ion-dipole. B) Ion-ion. C) H-bonding. D) London Dispersion Forces. Show Answer Correct Answer: B) Ion-ion. 41. What is a common use of hydrogen fuel cells today? A) Fueling vehicles. B) Powering smartphones. C) Heating homes. D) Running household appliances. Show Answer Correct Answer: A) Fueling vehicles. 42. The promoter used in the Bosch process is: A) Chromic oxide. B) Iron oxide. C) Molybdenum. D) Copper. Show Answer Correct Answer: A) Chromic oxide. 43. Hydrogen is odorless, colorless and tasteless gas A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 44. In a chemistry lab experiment, Krish is observing the reaction taking place in a shift converter. Which of the following reactions is he likely to observe? A) [CO + H2] + H2O $\rightarrow$ CO2 + H2. B) C + H2O $\rightarrow$ [CO+H2]. C) All the above. D) None of the above. Show Answer Correct Answer: A) [CO + H2] + H2O $\rightarrow$ CO2 + H2. 45. Which of the following statements about hydrogen are correct? A) Hydrogen ion, H, exists freely in solution. B) Dihydrogen does not act as a reducing agent. C) Hydrogen never acts as cation in ionic salts. D) Hydrogen has three isotopes of which deuterium is the most common. Show Answer Correct Answer: C) Hydrogen never acts as cation in ionic salts. 46. Given a salt, predict an acid-base pair which would produce the salt:KBr A) Ca(OH)$_{2}$ + HCl. B) KH + OHBr. C) NH$_{4}$OH + HF. D) KOH + HBr. Show Answer Correct Answer: D) KOH + HBr. 47. Which of the following is electron-deficient? A) (SiH$_{3}$)$_{2}$. B) (BH$_{3}$)$_{2}$. C) (CH$_{3}$)$_{2}$. D) PH$_{3}$. Show Answer Correct Answer: B) (BH$_{3}$)$_{2}$. 48. Which is a colloid? A) Fog. B) Rain water. C) Rice in water. D) Air. Show Answer Correct Answer: A) Fog. 49. An acid which can not give hydrogen gas with metal A) Hydrochloric acid. B) Carbonic acid. C) Nitric acid. D) Sulphuric acid. Show Answer Correct Answer: C) Nitric acid. 50. What is the balanced overall equation for a hydrogen fuel cell? A) H$_{2}$ (g) + 2OH$^{-}$(aq) $\rightarrow$ 2H$_{2}$O(l). B) 2H$_{2}$(g) + O$_{2}$(g) $\rightarrow$ 2H$_{2}$O(l). C) 2H$_{2}$O(l) + O$_{2}$(g) + $\rightarrow$ 4OH$^{-}$(aq). D) H$_{2}$(g) + O$_{2}$(g) $\rightarrow$ 2H$_{2}$O(l). Show Answer Correct Answer: B) 2H$_{2}$(g) + O$_{2}$(g) $\rightarrow$ 2H$_{2}$O(l). 51. Current leaves the electrolyte through the A) Cathode. B) Anode. C) None. D) None of the above. Show Answer Correct Answer: A) Cathode. 52. Determine the total number of neutrons in three isotopes of hydrogen A) 4. B) 2. C) 3. D) 1. Show Answer Correct Answer: C) 3. 53. What group and period is Hydrogen in? A) Group 3, Period 8. B) Group 1, Period 1. C) Group 3, Period 1. D) Group 1, Period 6. Show Answer Correct Answer: B) Group 1, Period 1. 54. Hydrogen fuel cells create what kind of energy? A) Thermal. B) Mechanical. C) Electric. D) Solar. Show Answer Correct Answer: C) Electric. 55. What are the emissions of a hydrogen fuel cell. A) Hydrogen gas. B) Water. C) Oxygen gas. D) Nothing at all. Show Answer Correct Answer: B) Water. 56. Which of the following would best remove Sharpie marker from your wall if this marker is known to be non-water soluble? A) Salt water. B) Distilled water. C) Ammonia (nitrogen trihydride). D) Acetone (finger nail polish remover). Show Answer Correct Answer: D) Acetone (finger nail polish remover). 57. What effect does agriculture runoff have on water quality A) Hi:). B) It creates algae. C) It makes the turbidity levels high. D) It creates algae and decrease levels of dissolved oxygen. Show Answer Correct Answer: D) It creates algae and decrease levels of dissolved oxygen. 58. Water free from the soluble salt of calcium and magnesium is called ..... A) A ) hard water. B) B) soft water. C) All the above. D) None of the above. Show Answer Correct Answer: B) B) soft water. 59. French Chemist and Biologist who named the element Hydrogen A) Antoine-Lavoisier. B) Robert Boyle. C) Paracelsus. D) Henry Cavendish. Show Answer Correct Answer: A) Antoine-Lavoisier. 60. WHICH IS THE SERIES CANT BE OBTAIN IN HYDROGEN SPECTRUM A) Alpha series. B) Pfund series. C) Brackett series. D) Lymans series. Show Answer Correct Answer: A) Alpha series. 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