This quiz works best with JavaScript enabled. Home > Grammar > Advanced > Syntax > Valency – Quiz 18 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Valency Quiz 18 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. An inflated balloon is placed in a refrigerator. Which statement describes the movement of the gas particles in the balloon? A) The particles move more slowly and become closer together. B) The particles move more slowly and become further apart. C) The particles move faster and become closer together. D) The particles move faster and become further apart. Show Answer Correct Answer: A) The particles move more slowly and become closer together. 2. According to Bohr's model, how many electrons are needed to fill the second energy level? A) 8. B) 6. C) 4. D) 10. Show Answer Correct Answer: A) 8. 3. Which of the following is a monovalent element? A) Magnesium. B) Zinc. C) Sodium. D) Calcium. Show Answer Correct Answer: C) Sodium. 4. Which of the following elements have a valency of 4? A) Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs). B) Carbon (C), Silicon (Si), Germanium (Ge), Tin (Sn), Lead (Pb). C) Nitrogen (N), Phosphorus (P), Arsenic (As), Antimony (Sb). D) Oxygen (O), Fluorine (F), Chlorine (Cl), Bromine (Br). Show Answer Correct Answer: B) Carbon (C), Silicon (Si), Germanium (Ge), Tin (Sn), Lead (Pb). 5. What does 2n$^{2}$ represent? A) Number of electrons present in a shell. B) Number of electrons present in a shell. C) Maximum number of electrons that can be accommodated in a shell. D) Maximum number of electrons present in a shell. Show Answer Correct Answer: C) Maximum number of electrons that can be accommodated in a shell. 6. The correct chemical formula for Zincate is: A) ZnO$_{3}$$^{2-}$. B) ZnO$_{2}$$^{2-}$. C) ZnO$^{2-}$. D) ZnO$^{-}$. Show Answer Correct Answer: B) ZnO$_{2}$$^{2-}$. 7. What is the valency of sulfur in H2SO4? A) 6. B) 4. C) 2. D) 8. Show Answer Correct Answer: A) 6. 8. The Valency of a group 2 element is A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 9. What is the valency of Copper [I]? A) 1. B) 2. C) 3. D) None of the above. Show Answer Correct Answer: A) 1. 10. Cross Method Review:What is the ionic formula for a compound made between Calcium and Iodine? A) CaI. B) CaI$_{2}$. C) Ca$_{2}$I. D) Ca$_{2}$I$_{2}$. Show Answer Correct Answer: B) CaI$_{2}$. 11. Anions occur when A) The inner shell is full. B) The outer shell is almost full. C) The outer shell is full. D) There is no outer shell. Show Answer Correct Answer: B) The outer shell is almost full. 12. When an element exists as a molecule, each unit consists of two or more ..... A) Ions. B) Radicals. C) Atoms. D) Valency. Show Answer Correct Answer: C) Atoms. 13. Which role does "the decision" have in this sentence "The decision surprised us all." ? A) Agent. B) Affected. C) Affecting. D) Actor. Show Answer Correct Answer: C) Affecting. 14. An atom that loses or gains electrons is called a(n) A) Isotope. B) Proton. C) Neutron. D) Ion. Show Answer Correct Answer: D) Ion. 15. Carbon is considered an element, while carbon dioxide is considered a compound. This is because carbon dioxide is ..... A) A gas at room temperature. B) Made of two different elements. C) Given off by green plants. D) Useful to human beings. Show Answer Correct Answer: B) Made of two different elements. 16. If an electron is removed, an ion becomes A) An atom. B) Positive. C) Negative. D) Neutral. Show Answer Correct Answer: B) Positive. 17. Element or compound?H$_{2}$O A) Element. B) Compound. C) All the above. D) None of the above. Show Answer Correct Answer: B) Compound. 18. Which element has '0' valency? A) Helium. B) Chlorine. C) Bromine. D) None of the above. Show Answer Correct Answer: A) Helium. 19. Calcium has valency of A) +2. B) -1. C) +1. D) -2. Show Answer Correct Answer: A) +2. 20. Which atom is most likely to form a 1-ion? A) F. B) S. C) K. D) Na. Show Answer Correct Answer: A) F. 21. What is the valency of an element with 4 electrons in its outermost shell? A) 2. B) 8. C) 6. D) 4. Show Answer Correct Answer: D) 4. 22. How many valence electrons are found in atoms of group 15? A) 4. B) 5. C) 2. D) 3. Show Answer Correct Answer: B) 5. 23. Silicon atom has ..... valence electrons. A) 0. B) 2. C) 4. D) 6. Show Answer Correct Answer: C) 4. 24. Intransitive verbs need a direct object to be complete A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 25. Adding heat to a solid makes the particles move ..... A) Particles in a solid are not moving. B) Slower. C) At the same rate as before the heat was applied. D) Faster. Show Answer Correct Answer: D) Faster. 26. I am sodium. I have 11 electrons. My electronic distribution in shells are A) 0.2, 8. B) 1, 8, 2. C) 8, 1, 2. D) 2, 8, 1. Show Answer Correct Answer: D) 2, 8, 1. 27. $Cr_{2_{ }}O_7^{-2}$ A) Peroxide. B) Permanganate. C) Plumbite. D) Dichromate. Show Answer Correct Answer: D) Dichromate. 28. Formula of "sodium oxide" A) $Na_1O$. B) $Na_2O$. C) $O_2Na$. D) $Na_3O$. Show Answer Correct Answer: B) $Na_2O$. 29. Bromine A) 1. B) 2. C) 4. D) 2, 3. Show Answer Correct Answer: A) 1. 30. Provide an example of a compound and its valency. A) Carbon Dioxide (CO2)-Carbon (valency 4), Oxygen (valency 2). B) Ammonia (NH3)-Nitrogen (valency 3), Hydrogen (valency 2). C) Water (H2O)-Hydrogen (valency 1), Oxygen (valency 2). D) Sodium Chloride (NaCl)-Sodium (valency 1), Chlorine (valency 3). Show Answer Correct Answer: C) Water (H2O)-Hydrogen (valency 1), Oxygen (valency 2). ← 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