This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part I) Chapter 2 Solutions – Quiz 20 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 20 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Why do solids expand when they are heated? A) The particles get bigger. B) The particles vibrate more and take up more space. C) The particles vibrate more and get closer together. D) The particles stick together. Show Answer Correct Answer: B) The particles vibrate more and take up more space. 2. When we put a substance in water and stir it to see if it dissolves we are testing for ..... A) Relative Density. B) Solubility. C) Mass. D) Temperature. Show Answer Correct Answer: B) Solubility. 3. The units of protein are A) Amino acids. B) Glucose. C) Fatty acid. D) Peptides. Show Answer Correct Answer: A) Amino acids. 4. A beaker of uncovered salt water is left in the lab. What happens to the conductivity after a week? A) The conductivity decreases since the concentration decreases as the water evaporates. B) The conductivity increases, since the concentration decreases as the water evaporates. C) The conductivity decreases, since the concentration increases as the water evaporates. D) The conductivity increases, since the concentration increases as the water evaporates. Show Answer Correct Answer: D) The conductivity increases, since the concentration increases as the water evaporates. 5. What happens to the concentration and conductivity, when you increase the amount of solvent in a solution? A) The concentration increases and conductivity increases. B) The concentration increases and the conductivity decreases. C) The concentration decreases and the conductivity decreases. D) The concentration decreases and the conductivity increases. Show Answer Correct Answer: C) The concentration decreases and the conductivity decreases. 6. When a powdered drink mix was added to water, the liquid turned orange. A student decided the taste was too strong, so he poured out half of the liquid and added more water. Which of the following most likely occurred when more water was added? (5.5C) A) The physical state changed. B) The orange color became lighter. C) The liquid had a sweeter taste. D) None of the above. Show Answer Correct Answer: B) The orange color became lighter. 7. Which symbiotic relationship is described by one individual benefiting and the other being neither harmed nor benefited? A) Mutualism. B) Commensalism. C) Parasitism. D) Competition. Show Answer Correct Answer: B) Commensalism. 8. True or FalseThe rate of dissolving of a solute in a solvent is faster when the solute and solvent are stirred. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. Solve:3(x-2) = 3x-6 A) X = 6. B) X =-6. C) Infinitely many solutions. D) No solutions. Show Answer Correct Answer: C) Infinitely many solutions. 10. A combination of 2 or more substances and the physical properties are maintained is called- A) A mixture. B) A solution. C) A solute. D) A solvent. Show Answer Correct Answer: A) A mixture. 11. The heavier liquid floats on the lighter liquid. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 12. Calculate the Molarity in a solution containing 40.0 g of NaCl dissolved in 500.0 ml of H2O. A) 0.08 M. B) 12.5 M. C) 1.37 M. D) 0.74 M. Show Answer Correct Answer: C) 1.37 M. 13. A combination of two or more substances that cannot easily be separated ..... A) Mixture. B) Solution. C) Solute. D) Solvent. Show Answer Correct Answer: B) Solution. 14. The two components of a solution are the solute and solvent. Which statement describes the solute? A) It is the solid formed in the solution. B) It is the liquid component of the solution. C) It is typically the component of a solution in smaller quantity. D) It is typically the component of a solution in larger quantity. Show Answer Correct Answer: C) It is typically the component of a solution in smaller quantity. 15. Which of the following is NOT a characteristic of HETEROGENEOUS MIXTURE? A) We CAN'T judge by just seeing it. B) Non-uniform in composition. C) We CAN judge by just seeing it. D) None of the above. Show Answer Correct Answer: A) We CAN'T judge by just seeing it. 16. Considering the formation, breaking and strength of hydrogen bond, predict which of the following mixtures will show a positive deviation from Raoult's law? (i) Methanol and acetone. (ii) Chloroform and acetone. (iii) Nitric acid and water. (iv) Phenol and aniline. A) (i) Methanol and acetone. B) (ii) Chloroform and acetone. C) (iii) Nitric acid and water. D) (iv) Phenol and aniline. Show Answer Correct Answer: A) (i) Methanol and acetone. 17. Which of the following is NOT an electrolyte? A) CH3CH2OH. B) KOH. C) CrCl3. D) KI. Show Answer Correct Answer: A) CH3CH2OH. 18. In a solution of 0.2 M sodium bromide, the solvent is the A) Sodium. B) Bromide. C) Sodium bromide. D) Water. Show Answer Correct Answer: D) Water. 19. Describe a solute. A) Part of solution present in largest amount. B) Gets dissolved. C) Water. D) Surrounds and breaks apart. Show Answer Correct Answer: B) Gets dissolved. 20. The process of dissolving a substance in solution A) Solvotion. B) Salvation. C) Solvation. D) Salvution. Show Answer Correct Answer: C) Solvation. 21. What does it mean to be "Soluble" ? A) Capable of being a solid. B) To have soul. C) Capable of being dissolved. D) To sink. Show Answer Correct Answer: C) Capable of being dissolved. 22. Which of the following is NOT an example of a strong electrolyte? A) Strong Acids. B) Strong Bases. C) Soluble Ionic Compounds. D) Covalent Compounds. Show Answer Correct Answer: D) Covalent Compounds. 23. A mixture that is unevenly mixed. (You can see the parts) A) Homogeneous mixture. B) Heterogeneous mixture. C) Concentration. D) Solubility. Show Answer Correct Answer: B) Heterogeneous mixture. 24. Solids are most soluble at ..... temperatures. A) High. B) Low. C) Medium. D) None of the above. Show Answer Correct Answer: A) High. 25. Which solution below has the highest boiling point? A) NaCl 1 M. B) CaCl$_{2}$ 1 M. C) C$_{6}$H$_{12}$O$_{6}$ 1 M. D) AlCl$_{3}$ 1 M. Show Answer Correct Answer: D) AlCl$_{3}$ 1 M. ← PreviousNext →Related QuizzesClass 12 Chemistry (Part I) Chapter 2 Solutions Quiz 1Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 2Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 3Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 4Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 5Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 6Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 7Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 8Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 9Class 12 Chemistry (Part I) Chapter 2 Solutions Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books