This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 42 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 42 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The acid generally stored in batteries is A) Acetic Acid. B) Nitric Acid. C) Sulphuric Acid. D) Hydrochloric Acid. Show Answer Correct Answer: C) Sulphuric Acid. 2. Which type of reaction is:4 (NH4)3PO4 + 3 Pb(NO3)4 $\rightarrow$ 12 NH4NO3 + Pb3(PO4)4 A) Synthesis. B) Decomposition. C) Single Displacement. D) Double Displacement. Show Answer Correct Answer: D) Double Displacement. 3. Which chemical reaction shows photosynthesis? A) Carbon + oxygen $\rightarrow$ carbon dioxide. B) Water + carbon dioxide + sunlight $\rightarrow$ oxygen + glucose. C) Hydrogen + oxygen $\rightarrow$ water. D) None of above. Show Answer Correct Answer: B) Water + carbon dioxide + sunlight $\rightarrow$ oxygen + glucose. 4. Who discovered protons? A) John Joseph Thomson. B) James Chadwick. C) Ernest Rutherford. D) Robert Millikan. Show Answer Correct Answer: C) Ernest Rutherford. 5. Which type of bonding is present within organic molecules? A) Covalent bond. B) Ionic bond. C) Metallic bond. D) Hydrogen bond. Show Answer Correct Answer: A) Covalent bond. 6. The central region of an atom where its neutrons and protons are is its A) Nucleus. B) Electron cloud. C) Core. D) Center. Show Answer Correct Answer: A) Nucleus. 7. Neutrons have a ..... charge. A) Negative. B) Positive. C) Neutral. D) None of above. Show Answer Correct Answer: C) Neutral. 8. The most electronegative element among the following is A) Oxygen. B) Fluorine. C) Sodium. D) Bromine. Show Answer Correct Answer: B) Fluorine. 9. Atoms tend to be stable and nonreactive if they have ..... valence electrons. A) 3. B) 4. C) 6. D) 8. Show Answer Correct Answer: D) 8. 10. The most important element in organic chemistry. It has 4 valence electrons that can form 4 stable covalent bonds. A) Chlorine. B) Fluorine. C) Silicon. D) Carbon. Show Answer Correct Answer: D) Carbon. 11. What make atoms react with each other and create bonds? A) The atomic number. B) The atomic Mass. C) The electrons of the outer shell. D) The electrons of the inner shell. Show Answer Correct Answer: C) The electrons of the outer shell. 12. Which type of reaction is:2 K + MgBr2 $\rightarrow$ 2 KBr + Mg A) Synthesis. B) Decomposition. C) Single Displacement. D) Double Displacement. Show Answer Correct Answer: C) Single Displacement. 13. One or two letter character that is used to identify an element A) Atomic mass. B) Atomic number. C) Symbol. D) Isotope. Show Answer Correct Answer: C) Symbol. 14. When you mix salad oil and water they immediately separate because A) Salad oil is hydrophobic. B) Hydrogen bonds reform between water molecules. C) Salad oil is too heavy. D) It depends on what kind of oil you are using. Show Answer Correct Answer: A) Salad oil is hydrophobic. 15. Which of the following refers to the attraction between ionic and polar molecules? A) Dispersion forces. B) Dipole-dipole interaction. C) Hydrogen bonding. D) Ion-dipole interaction. Show Answer Correct Answer: D) Ion-dipole interaction. 16. What type of chemical bond is formed between two atoms when electrons are shared? A) Ionic. B) Covalent. C) Hydrogen. D) Spontaneous. Show Answer Correct Answer: B) Covalent. 17. Margaret found an unknown object on the ground while walking on the beach. She discovered that it shatters easily, it does not conduct heat or electricity, and is not shiny. What type of object did she find? A) Metal. B) Non-metal. C) Metalloid. D) None of above. Show Answer Correct Answer: B) Non-metal. 18. Type of intermolecular force present in HF. A) Dipole dipole. B) Dispersion. C) H-bond. D) Ionic. Show Answer Correct Answer: C) H-bond. 19. How many liters would you need to make a 1 M solution if you have 6 mol of Sodium Hydroxide? A) 2. B) 3. C) 4. D) 6. Show Answer Correct Answer: D) 6. 20. Which of the following is produced during the formation of photochemical smog? A) Ozone. B) Methane. C) Hydrocarbons. D) Nitrogen Oxides. Show Answer Correct Answer: A) Ozone. ← PreviousNext →Related QuizzesScience QuizzesChemistry Quiz 1Chemistry Quiz 2Chemistry Quiz 3Chemistry Quiz 4Chemistry Quiz 5Chemistry Quiz 6Chemistry Quiz 7Chemistry Quiz 8Chemistry Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books