This quiz works best with JavaScript enabled. Home > Science > Chemistry > Chemistry – Quiz 28 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Chemistry Quiz 28 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What compound is considered the universal solvent A) Water. B) Glucose. C) Salt. D) Ethanol. Show Answer Correct Answer: A) Water. 2. Which of the following does NOT form a precipitate? A) AgNO3(aq) + 2KBr(aq) $\rightarrow$. B) LiNO3 (aq) + NaC2H3O2(aq) $\rightarrow$. C) Ca(NO3)2(aq) + K2CO3(aq) $\rightarrow$. D) Ba(NO3)2 (aq) + Na2SO4(aq) $\rightarrow$. Show Answer Correct Answer: B) LiNO3 (aq) + NaC2H3O2(aq) $\rightarrow$. 3. The energy of the moving electrons is A) Heat energy. B) Nuclear energy. C) Electrical energy. D) Radiant energy. Show Answer Correct Answer: C) Electrical energy. 4. How is chemical change different from physical change? A) In a physical change a new substance is formed. B) In a physical change a substance is lost. C) In a chemical change a new substance is formed. D) In a chemical change does not obey law of conservation of mass. Show Answer Correct Answer: C) In a chemical change a new substance is formed. 5. What is the precipitate formed when you mix silver nitrate with copper chloride? A) Copper nitrate. B) Copper chloride. C) Silver chloride. D) Silver nitrate. Show Answer Correct Answer: C) Silver chloride. 6. Particles move but stay relatively close to one anther A) Solid. B) Liquid. C) Gas. D) None of above. Show Answer Correct Answer: B) Liquid. 7. An atoms mass number equals the number of A) Protons plus neutrons. B) Protons. C) Neutrons. D) Protons plus electrons. Show Answer Correct Answer: A) Protons plus neutrons. 8. The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind? A) 1/3. B) 1/4. C) 1/6. D) 1/8. Show Answer Correct Answer: D) 1/8. 9. Who is regarded as father of modern chemistry? A) Einstein. B) Lavoisier. C) Ruterford. D) V. Raman. Show Answer Correct Answer: B) Lavoisier. 10. Valence electrons determine an atoms A) Mass. B) Chemical properties. C) Electric charge. D) Period. Show Answer Correct Answer: B) Chemical properties. 11. What is hottest part of the gas flame is called? A) Dark zone. B) Blue zone. C) Luminous zone. D) Non-luminous zone. Show Answer Correct Answer: D) Non-luminous zone. 12. Magnesium ion A) Mg+. B) Mg2+. C) Mg. D) Mg2-. Show Answer Correct Answer: B) Mg2+. 13. Which subatomic particle would have the greatest potential energy? A) An electron on an outer orbital. B) A proton in the nucleus. C) A neutron in the nucleus. D) An electron on an inner orbital. Show Answer Correct Answer: A) An electron on an outer orbital. 14. Which of the following is not one of the major elements present in the human body? A) Oxygen. B) Zinc. C) Carbon. D) Potassium. Show Answer Correct Answer: B) Zinc. 15. The Chemical Symbol of Sodium is A) Na. B) Sd. C) So. D) Br. Show Answer Correct Answer: C) So. 16. What is the CORRECT formula of ammonium sulfide? A) NH4SO3. B) (NH4)2SO4. C) (NH4)2S. D) NH3S. Show Answer Correct Answer: C) (NH4)2S. 17. If the atomic number is 10 and the atomic mass is 23.10, how neutrons does that atom have? A) 10. B) 23.10. C) 13. D) 23. Show Answer Correct Answer: C) 13. 18. The oil used in the froth floatation process is A) Pine oil. B) Olive oil. C) Coconut oil. D) Kerosene oil. Show Answer Correct Answer: A) Pine oil. 19. Which biomolecule contain your genetics? A) Carbohydrate. B) Lipid. C) Nucleic Acid. D) Protein. Show Answer Correct Answer: C) Nucleic Acid. 20. One difference between carbon-12 and carbon-14 is that carbon-14 has A) Two more protons than carbon-12. B) Two more electrons than carbon-12. C) Two more neutrons than carbon-12. D) A and C only B and C only. Show Answer Correct Answer: C) Two more neutrons than carbon-12. ← 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