This quiz works best with JavaScript enabled. Home > English Grammar > Grammar > Advanced > Syntax > Valency – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Valency Quiz 12 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. CaCO$_{3 }$represents A) Calcium Carbonate. B) Sodium carbonate. C) Sodium Chloride. D) Sodium bicarbonate. Show Answer Correct Answer: A) Calcium Carbonate. 2. 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. 3. 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. 4. What is the charge of an atom that has gained one electron? A) -2. B) +1. C) +2. D) -1. Show Answer Correct Answer: D) -1. 5. What is the formula for this compound:Magnesium and Oxygen A) Mg$_{2}$O. B) MgO. C) Mg$_{2}$O$_{3}$. D) MgO$_{3}$. Show Answer Correct Answer: B) MgO. 6. Symbol of Calcium A) Co. B) C. C) Ca. D) Cu. Show Answer Correct Answer: C) Ca. 7. What element in Period 4 has 5 valence electrons? A) As. B) Sb. C) Zr. D) V. Show Answer Correct Answer: A) As. 8. What is the valency of Fluorine? A) 4. B) 1. C) 3. D) 2. Show Answer Correct Answer: B) 1. 9. How many electrons can the first energy level hold? A) 1. B) 8. C) 2. D) 0. Show Answer Correct Answer: C) 2. 10. Which element loses 1 valence electron to form a stable bond? A) Hydrogen (H). B) Chlorine (Cl). C) Oxygen (O). D) Sodium (Na). Show Answer Correct Answer: D) Sodium (Na). 11. 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. 12. 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). 13. Valency of Helium is A) 0. B) 3. C) 1. D) 2. Show Answer Correct Answer: A) 0. 14. Symbol of "Silver" A) Ag. B) AG. C) Ag. D) Au. Show Answer Correct Answer: A) Ag. 15. 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. 16. Valency of "Magnesium" A) $3^+$. B) $2^+$. C) $3^-$. D) $2^-$. Show Answer Correct Answer: B) $2^+$. 17. What element has the chemical symbol-I? A) Iodine. B) Iron. C) Lithium. D) Lead. Show Answer Correct Answer: A) Iodine. 18. Balance this equation ..... Zn+ ..... HCl$\rightarrow$ ..... ZnCl$_{2 }$+ ..... H$_{2}$ A) 1, 1, 2, 1. B) 1, 2, 1, 1. C) 2, 1, 1, 1. D) 1, 1, 1, 2. Show Answer Correct Answer: B) 1, 2, 1, 1. 19. 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. 20. 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. 21. Which of the following is the correct ionic formula for a Barium and Hydrogen compound? A) Ba$_{3}$H$_{4}$. B) Ba$_{2}$H$_{3}$. C) BaH$_{2}$. D) BaH$_{4}$. Show Answer Correct Answer: C) BaH$_{2}$. 22. SYmbol of "Bromine" A) Br. B) B. C) Bi. D) Be. Show Answer Correct Answer: A) Br. 23. 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. 24. Atmoic number of "nitrogen" A) 7. B) 5. C) 9. D) 20. Show Answer Correct Answer: A) 7. 25. 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. 26. What's the chemical name of Natrium? A) Sodium. B) Silicon. C) Magnesium. D) Potassium. Show Answer Correct Answer: A) Sodium. 27. What is the molecular formula of sodium chloride? A) NaCl. B) SCl. C) Na$_{2}$Cl. D) SoCl. Show Answer Correct Answer: A) NaCl. 28. I am Helium. I have two electrons. My valency is A) 2. B) 0. C) 1. D) 3. Show Answer Correct Answer: B) 0. 29. How many characters are there in free fire A) 32. B) 34. C) 33. D) 35. Show Answer Correct Answer: A) 32. 30. Symbol of Sodium is ..... A) S. B) Sd. C) Na. D) None of the above. Show Answer Correct Answer: C) Na. ← 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