This quiz works best with JavaScript enabled. Home > Class 11 > 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 (25 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 is a monovalent electropositiveclear. B) It forms basic oxideclear. C) It is a non-metaldone. D) It has low electron affinity. Show Answer Correct Answer: C) 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=3 $\rightarrow$ n=2. B) N=4 $\rightarrow$ n=2. C) N=5 $\rightarrow$ n=2. D) N=6 $\rightarrow$ n=2. Show Answer Correct Answer: C) N=5 $\rightarrow$ n=2. 9. A covalent bond is a chemical bond where two atoms share ..... A) Protons. B) Neutrons. C) Valence electrons. D) The same group on the periodic table. Show Answer Correct Answer: C) 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) Methane is a polar molecule, while water is nonpolar. B) Water boils at a lower temperature than methane. C) Methane has stronger intermolecular forces than water. 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) Iron. B) Nickel. C) Vanadium(V) oxide. D) Molybdenum. Show Answer Correct Answer: C) Vanadium(V) oxide. 14. The freezing point of heavy water is A) 0$^\circ$C. B) 3.8$^\circ$C. C) 4$^\circ$C. D) 1$^\circ$C. Show Answer Correct Answer: B) 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 polar covalent bond. B) An ionic bond. C) A hydration shell. D) A hydrogen bond. Show Answer Correct Answer: D) A hydrogen bond. 22. Lighter shades (blond) are caused by which pigment? A) Eumelanin. B) Pheomelanin. C) Melanin. D) No pigment. Show Answer Correct Answer: B) 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) Methanol. C) Water. D) Acetone. Show Answer Correct Answer: C) Water. 25. Choose the correct option:-Hydrogen reacts with active metals to form these. A) Nitrates. B) Metal Carbonates. C) Sulfates. D) Metal Hydrides. Show Answer Correct Answer: D) Metal Hydrides. 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