This quiz works best with JavaScript enabled. Home > English Grammar > Grammar > Advanced > Syntax > Valency – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Valency Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which group has the greatest number of valence electrons? A) 14. B) 16. C) 18. D) 1. Show Answer Correct Answer: C) 18. 2. Valency of dichromate is A) +1. B) +2. C) -1. D) -2. Show Answer Correct Answer: D) -2. 3. The formula of sodium carbonate is A) NaCO$_{3}$. B) Na(CO$_{3}$)$_{2}$. C) Na$_{2}$CO$_{3}$. D) None of the above. Show Answer Correct Answer: C) Na$_{2}$CO$_{3}$. 4. A subatomic particle that has a negative charge A) Proton. B) Neutron. C) Electron. D) Quark. E) Atom. Show Answer Correct Answer: C) Electron. 5. Which problem is balanced? A) SO$_{2}$ + H$_{2}$0 $\rightarrow$ H$_{2}$SO$_{4}$. B) 2Na + 2H$_{2}$O $\rightarrow$ 2NaOH + H. C) 2Na + 2H$_{2}$O $\rightarrow$ 2NaOH + H$_{2}$. D) PbO$_{2}$ + 2H$_{2}$$\rightarrow$ H$_{2}$SO$_{4}$. Show Answer Correct Answer: C) 2Na + 2H$_{2}$O $\rightarrow$ 2NaOH + H$_{2}$. 6. Determine the valency of chlorine in HCl. A) 4. B) 1. C) 2. D) 3. Show Answer Correct Answer: B) 1. 7. The capacity of the M shell is ..... , but in Potassium, the M shell holds ..... electrons. A) 8 electrons, 18. B) 18 electrons, 8. C) 32 electrons, 18. D) 2 electrons, 8. Show Answer Correct Answer: B) 18 electrons, 8. 8. What is the chemical formula of Magnesium chloride? A) MgCl. B) MgC$_{2 }$. C) MgCl$_{2}$. D) MgC. Show Answer Correct Answer: C) MgCl$_{2}$. 9. The name of KHCO$_{3}$ is A) Potassium carbonate. B) Potassium hydrogencarbonate. C) All the above. D) None of the above. Show Answer Correct Answer: B) Potassium hydrogencarbonate. 10. I am an important element needed for the survival of all the organisms. I have 8 electrons. My valency is A) 0. B) 2. C) 1. D) 3. Show Answer Correct Answer: B) 2. 11. Valency of nitride is A) -2. B) -4. C) -1. D) -3. Show Answer Correct Answer: D) -3. 12. The innermost energy level has a maximum of how many electrons? A) 1. B) 6. C) 2. D) 8. Show Answer Correct Answer: C) 2. 13. NaHCO$_{3 }$represents A) Sodium bicarbonate. B) Calcium Carbonate. C) Sodium carbonate. D) Sodium Chloride. Show Answer Correct Answer: A) Sodium bicarbonate. 14. What is the electronic configuration of oxygen according to Bohr's model? A) 2-8. B) 2-6. C) 2-2. D) 2-4. Show Answer Correct Answer: B) 2-6. 15. What is the name of this ion? SO$_{4}$$^{2-}$ A) Sulfate. B) Sulfur tetroxide ion. C) Sulfide. D) Sulfonate. Show Answer Correct Answer: A) Sulfate. 16. How many valence electrons are in an atom of Se? A) 5. B) 2. C) 8. D) 6. Show Answer Correct Answer: D) 6. 17. What happens when water evaporates? A) The speed of the particles of the water increases. B) Particles of the water vapour are spaced further apart. C) The temperature of the remaining water rises. D) Particles of the water vapour lose energy to their surroundings. Show Answer Correct Answer: B) Particles of the water vapour are spaced further apart. 18. 'Si' is the symbol of ..... element. A) Sulphur. B) Silicon. C) Silver. D) None of the above. Show Answer Correct Answer: B) Silicon. 19. What is the definition of valency? A) The number of electrons in an atom. B) The number of neutrons in an atom. C) The combining capacity of an element. D) The number of protons in an atom. Show Answer Correct Answer: C) The combining capacity of an element. 20. Which of the following is an electropositive trivalent ion? A) Cobalt. B) Magnesium. C) Chromium. D) Nickel. Show Answer Correct Answer: C) Chromium. 21. What is the valency of Lithium? A) 1. B) 2. C) 3. D) None of the above. Show Answer Correct Answer: A) 1. 22. "I went home early yesterday." The word in italic is: A) Agent. B) Goal. C) Location. D) Theme. Show Answer Correct Answer: C) Location. 23. True or False:Law of conservation of energy states that matter can neither be created nor destroyed A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 24. Number of valency in Manganic A) 3+. B) 2-. C) 4-. D) 4+. Show Answer Correct Answer: D) 4+. 25. CaCO$_{3 }$represents A) Sodium Chloride. B) Sodium bicarbonate. C) Sodium carbonate. D) Calcium Carbonate. Show Answer Correct Answer: D) Calcium Carbonate. 26. What is the atomic number? A) The number of protons. B) The number of protons and neutrons. C) The number of neutrons. D) The number of protons and electrons. Show Answer Correct Answer: A) The number of protons. 27. Ionic Bonding is the electrostatic force of attraction between: A) Two non-metals. B) A metal ion and a non-metal ion. C) Molecules of water. D) Protons and neutrons in the nucleus. Show Answer Correct Answer: B) A metal ion and a non-metal ion. 28. What is the charge of an atom that has gained one electron? A) +2. B) +1. C) -1. D) -2. Show Answer Correct Answer: C) -1. 29. What is the formula for this compound:Magnesium and Oxygen A) Mg$_{2}$O$_{3}$. B) MgO$_{3}$. C) MgO. D) Mg$_{2}$O. Show Answer Correct Answer: C) MgO. 30. Symbol of Calcium A) C. B) Cu. C) Co. D) Ca. Show Answer Correct Answer: D) Ca. 31. What element in Period 4 has 5 valence electrons? A) Sb. B) Zr. C) As. D) V. Show Answer Correct Answer: C) As. 32. What is the valency of Fluorine? A) 3. B) 1. C) 4. D) 2. Show Answer Correct Answer: B) 1. 33. How many electrons can the first energy level hold? A) 0. B) 2. C) 1. D) 8. Show Answer Correct Answer: B) 2. 34. Which element loses 1 valence electron to form a stable bond? A) Oxygen (O). B) Hydrogen (H). C) Sodium (Na). D) Chlorine (Cl). Show Answer Correct Answer: C) Sodium (Na). 35. An ion has what type of charge? A) Negative. B) Positive. C) All the above. D) None of the above. Show Answer Correct Answer: A) Negative. 36. Which of the following element has valency of one A) Carbon. B) Sodium. C) Potassium. D) Both (b) and (c). Show Answer Correct Answer: D) Both (b) and (c). 37. Valency of Helium is A) 2. B) 3. C) 1. D) 0. Show Answer Correct Answer: D) 0. 38. Symbol of "Silver" A) Ag. B) AG. C) Au. D) Ag. Show Answer Correct Answer: A) Ag. 39. He coined first time the term Symbol of an element A) John Dalton. B) Aristotle. C) Avogadro. D) Berzelius. Show Answer Correct Answer: D) Berzelius. 40. Valency of "Magnesium" A) $3^-$. B) $3^+$. C) $2^+$. D) $2^-$. Show Answer Correct Answer: C) $2^+$. 41. What element has the chemical symbol-I? A) Iodine. B) Lead. C) Lithium. D) Iron. Show Answer Correct Answer: A) Iodine. 42. Balance this equation ..... Zn+ ..... HCl$\rightarrow$ ..... ZnCl$_{2 }$+ ..... H$_{2}$ A) 2, 1, 1, 1. B) 1, 1, 1, 2. C) 1, 1, 2, 1. D) 1, 2, 1, 1. Show Answer Correct Answer: D) 1, 2, 1, 1. 43. Which of the following elements has zero valency A) Helium. B) Neon. C) Above two. D) None of the above. Show Answer Correct Answer: C) Above two. 44. Anions and Cations form what type of compound? A) Covalent. B) Ionic. C) Balled. D) None of the above. Show Answer Correct Answer: B) Ionic. 45. Which of the following is the correct ionic formula for a Barium and Hydrogen compound? A) Ba$_{2}$H$_{3}$. B) Ba$_{3}$H$_{4}$. C) BaH$_{2}$. D) BaH$_{4}$. Show Answer Correct Answer: C) BaH$_{2}$. 46. SYmbol of "Bromine" A) B. B) Br. C) Be. D) Bi. Show Answer Correct Answer: B) Br. 47. Most suitable element and most widely accepted standard unit for the measurement of atomic mass A) Oxygen. B) Carbon. C) Nitrogen. D) None of the above. Show Answer Correct Answer: B) Carbon. 48. Atmoic number of "nitrogen" A) 7. B) 20. C) 5. D) 9. Show Answer Correct Answer: A) 7. 49. Which one of these is NOT an Ideal Gas Assumption? A) Gas particles are hard, round spheres. B) Gas particles are strongly attracted to one another. C) Gas particles do not take up space. D) Gas particles collide perfectly elastically. Show Answer Correct Answer: B) Gas particles are strongly attracted to one another. 50. What's the chemical name of Natrium? A) Potassium. B) Magnesium. C) Silicon. D) Sodium. Show Answer Correct Answer: D) Sodium. 51. What is the molecular formula of sodium chloride? A) SCl. B) NaCl. C) SoCl. D) Na$_{2}$Cl. Show Answer Correct Answer: B) NaCl. 52. I am Helium. I have two electrons. My valency is A) 1. B) 3. C) 2. D) 0. Show Answer Correct Answer: D) 0. 53. How many characters are there in free fire A) 33. B) 35. C) 34. D) 32. Show Answer Correct Answer: D) 32. 54. Symbol of Sodium is ..... A) S. B) Sd. C) Na. D) None of the above. Show Answer Correct Answer: C) Na. 55. What is affected in this sentence "The birthday cake fell from the table yesterday." A) Fell. B) Yesterday. C) The table. D) The birthday cake. Show Answer Correct Answer: D) The birthday cake. 56. If the atomic number of an element is 12 and its mass number is 24, how many neutrons are contained in the nucleus? A) 6. B) 8. C) 24. D) 12. Show Answer Correct Answer: C) 24. 57. Identify the element in Period 5 that has 1 valence electron? A) Nb. B) Rb. C) Sb. D) Ag. Show Answer Correct Answer: B) Rb. 58. The atom or group of atom carrying either positive or negative charges are commonly known as A) Valency. B) Cation. C) Radicals. D) Anion. Show Answer Correct Answer: C) Radicals. 59. What is the term for combining 2 or more DIFFERENT atoms together? A) Atoms. B) Molecules. C) Compounds. D) Elements. Show Answer Correct Answer: C) Compounds. 60. Acceptance of 3 electrons in a phosphorus atom results in the formation of ..... A) $P_{ }^{3-}$. B) $P^{5+}$. C) $P^{3+}$. D) $P^{5-}$. Show Answer Correct Answer: A) $P_{ }^{3-}$. ← PreviousNext →Related QuizzesAdvanced QuizzesGrammar QuizzesValency Quiz 1Valency Quiz 2Valency Quiz 3Valency Quiz 4Valency Quiz 5Valency Quiz 7Valency Quiz 8Valency Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books