This quiz works best with JavaScript enabled. Home > Grammar > Advanced > Syntax > Valency – Quiz 20 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Valency Quiz 20 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The number of atoms present in a molecule is called its A) Atomicity. B) Valency. C) Symbol. D) Compound. Show Answer Correct Answer: A) Atomicity. 2. What is the formula of aluminium iodide? A) Al$_{3}$I. B) Al$_{1}$I$_{3}$. C) AlI$_{3}$. D) Al$_{3}$I$_{7}$. Show Answer Correct Answer: C) AlI$_{3}$. 3. I am potassium. I have 19 electrons. My valency is A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: A) 1. 4. Carbide is a ..... elements A) Monovalent. B) Divalent. C) Trivalent. D) Tetravalent. Show Answer Correct Answer: D) Tetravalent. 5. What is the charge of an atom that has lost one electron? A) -1. B) -2. C) +1. D) +2. Show Answer Correct Answer: C) +1. 6. What type of bonding is found in a water molecule? A) Covalent Bonding. B) Gravitational Attraction. C) Ionic Bonding. D) Affinity for Oxygen. Show Answer Correct Answer: A) Covalent Bonding. 7. The symbol of which of these elements is NOT a single letter? A) Phosphorous. B) Iron. C) Silver. D) None of the above. Show Answer Correct Answer: C) Silver. 8. Valency of nitrate ion is A) 0. B) 2. C) -1. D) 1. Show Answer Correct Answer: C) -1. 9. What is a valence electron? A) Electrons in the first energy shell. B) Electrons in the second energy shell. C) Electrons in the outer shell. D) Total number of electrons. Show Answer Correct Answer: C) Electrons in the outer shell. 10. Felix came to the office party for cake. A) Intransitive. B) Monotransitive. C) Ditransitive. D) Complex Transitive. E) Copular. Show Answer Correct Answer: A) Intransitive. 11. Valency of Nitride A) 2. B) 5. C) 6. D) 3. Show Answer Correct Answer: D) 3. 12. How do you determine the valency of transition metals? A) Transition metals do not have a valency as they are inert. B) The valency of transition metals is determined by their oxidation states, which can vary due to the involvement of d-orbitals. C) Valency is determined solely by the number of protons in the nucleus. D) The valency of transition metals is fixed and does not change. Show Answer Correct Answer: B) The valency of transition metals is determined by their oxidation states, which can vary due to the involvement of d-orbitals. 13. Which of the following is the correct valency for Bisulphite A) -1. B) -2. C) -3. D) +2. Show Answer Correct Answer: A) -1. 14. The chemical formula for Aluminate is: A) Al$_{2}$O$_{3}$$^{2-}$. B) AlO$_{3}$$^{-}$. C) AlO$_{2}$$^{2-}$. D) AlO$_{2}$$^{-}$. Show Answer Correct Answer: D) AlO$_{2}$$^{-}$. 15. What is the formula of Copper (II) oxide? A) CUO. B) CuO. C) CuO$_{2}$. D) Cu$_{2}$O. Show Answer Correct Answer: B) CuO. 16. Neon is a noble gas, in Group 8. It has eight electrons on its outer shell. What is its valency number? A) 8. B) 0. C) 7. D) 2. Show Answer Correct Answer: B) 0. 17. ClO$_{3}$$^{-}$is the valency of A) Chloride. B) Hypochloide. C) Chlorate. D) Chlorine trioxide. Show Answer Correct Answer: C) Chlorate. 18. What element has the following electron configuration? [Ar] 3d$^{10}$4s$^{2}$4p$^{3}$ A) As. B) P. C) Se. D) Ga. Show Answer Correct Answer: A) As. 19. What is the valency of Mercury in its mercurous form? A) 4. B) 2. C) 1. D) 3. Show Answer Correct Answer: C) 1. 20. The force of attraction between molecules is ..... A) Intermolecular forces. B) Bridge forces. C) Chemical bonds. D) None of the above. Show Answer Correct Answer: A) Intermolecular forces. 21. What is the formula of potassium chloride? A) KCl. B) K$_{1}$Cl$_{7}$. C) Cl$_{7}$K$_{1}$. D) Cl$_{1}$K. Show Answer Correct Answer: A) KCl. 22. How many atoms of aluminum are on each side of the following equation:4Al + 3O$_{2 }$$\rightarrow$ 2Al$_{2 }$O$_{3}$ A) 2. B) 6. C) 1. D) 4. Show Answer Correct Answer: D) 4. 23. The symbol and valency of ammonium is A) NH$_{4}$, valency is 1. B) NH$_{3}$, valency is 1. C) NH$_{3 }$, valency is 2. D) None of the above. Show Answer Correct Answer: A) NH$_{4}$, valency is 1. 24. How many valence electrons are in an atom of K? A) 3. B) 8. C) 4. D) 1. Show Answer Correct Answer: D) 1. 25. Iron(III) ion A) +1. B) +2. C) +3. D) None of the above. Show Answer Correct Answer: C) +3. ← PreviousNext →Related QuizzesAdvanced QuizzesGrammar QuizzesValency Quiz 1Valency Quiz 2Valency Quiz 3Valency Quiz 4Valency Quiz 5Valency Quiz 6Valency Quiz 7Valency Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books