This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry – Quiz 8 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 8 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The volume of 1.7g of NH3 at STP (273K, 1atm) is A) 1.7L. B) 2.24L. C) 2.8L. D) 3.4L. Show Answer Correct Answer: B) 2.24L. 2. If law of conservation of mass was to hold true, then 20.8 g of BaCl 2 on reaction with 9.8 g of Sulphuric acid will produce 7.3 g of HCl and Barium Sulphate equal to A) 11.65 g. B) 23.3 g. C) 25.5 g. D) 30.6 g. Show Answer Correct Answer: B) 23.3 g. 3. How many seconds are there in 22hours?1. 11 x 72002. 22 x 36003. 11x 720004. 22 x 360005. 792006.7920Choose the correct calculations only A) 1, 3, 5. B) 1, 2, 5. C) 1, 2, 3, 4, 5. D) 1, 4, 6. Show Answer Correct Answer: B) 1, 2, 5. 4. Which of the following pairs has both members from thesame period of the periodic table. A) Na-Ca. B) Na-Cl. C) Ca-Cl. D) Cl-Br. Show Answer Correct Answer: B) Na-Cl. 5. Round 34.216 to three significant figures: A) 34.2. B) 34.22. C) 34.3. D) 34.21. Show Answer Correct Answer: A) 34.2. 6. Nanometer stands for A) 10$^{-5}$ m. B) 10$^{-9}$ m. C) 10$^{+9}$m. D) 10$^{+5}$m. Show Answer Correct Answer: B) 10$^{-9}$ m. 7. The oxidation number of Na is A) 1. B) 2. C) 0. D) -1. Show Answer Correct Answer: C) 0. 8. Volume is the space occupied by a substance. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. The sub-shell with n=6, l=2 can accomodate a maximum of A) 10 electrons. B) 12 electrons. C) 36 electrons. D) 72 electrons. Show Answer Correct Answer: A) 10 electrons. 10. SI unit of density is A) G/m$^{3}$. B) Kg/L. C) G/mL. D) Kg/m$^{3}$. Show Answer Correct Answer: D) Kg/m$^{3}$. 11. H mass of C$_{12}$ atom A) 1 amu. B) 1 u. C) 1 da. D) All of these. Show Answer Correct Answer: D) All of these. 12. Number of atoms in 52u of He are: A) 4. B) 13. C) 20. D) 5000. Show Answer Correct Answer: B) 13. 13. Which out of these will form an anion? A) Ammonium. B) Chlorine. C) Nickel. D) Iron. Show Answer Correct Answer: B) Chlorine. 14. The elements with atomic numbers 9, 17, 35, 53, 85 are called A) Halogens. B) Noble gases. C) Heavy metals. D) Light metals. Show Answer Correct Answer: A) Halogens. 15. A substance with a pH of 8 is a A) Acid. B) Base. C) Neutral. D) None of the above. Show Answer Correct Answer: B) Base. 16. How many grams are in 1.2 x 10$^{24}$ molecules of CO? (molar mass of CO = 28 g/mol) A) 28.2 g. B) 55.8 g. C) 6.02 g. D) 1.2 g. Show Answer Correct Answer: B) 55.8 g. 17. The quantum of light is A) Photon. B) Neutron. C) Electron. D) Proton. Show Answer Correct Answer: A) Photon. 18. The mass of one mole of a substance is known as the A) Molar Mass. B) Formula. C) Chemical Equation. D) Chemical Mass. Show Answer Correct Answer: A) Molar Mass. 19. G of urea on strong heating with NaOH evolves NH$_{3}$. Liberated NH$_{3}$ will combine with which of the following HCl solution? A) 100 mL of 0.2 N HCl. B) 400 mL of 0.2 N HCl. C) 100 mL of 0.1 N HCl. D) 200 mL of 0.2 N HCl. Show Answer Correct Answer: A) 100 mL of 0.2 N HCl. 20. FeCl$_{2}$ A) Ferric chloride. B) Ferrous chloride. C) Ferrum. D) Magnetite. Show Answer Correct Answer: B) Ferrous chloride. 21. If 6.3 g of NaHCO$_{3}$ is added to 15.0 g CH$_{3}$COOH solution, the residue is found to weigh 18.0 g. What is the mass of CO$_{2}$ released in the reaction? A) 4.5g. B) 3.3g. C) 2.6g. D) 2.8g. Show Answer Correct Answer: B) 3.3g. 22. An atom of calcium has 20 protons and 20 neutrons. What is its mass number? A) 20. B) 40. C) 60. D) 80. Show Answer Correct Answer: B) 40. 23. How many moles are in 3.01 x 10$^{22}$ atoms of magnesium? A) 0.0500 moles. B) 1.81 x 10$^{46}$ moles. C) 5.00 x 10$^{21}$ moles. D) 5.00 moles. Show Answer Correct Answer: A) 0.0500 moles. 24. What is the hybridisation and shape of alkyl carbocation? A) Sp$_{2}$ planner. B) Sp$_{2 }$pyramidal. C) Sp$_{3 }$planner. D) None of the above. Show Answer Correct Answer: A) Sp$_{2}$ planner. 25. New substances are always formed when matter undergoes a ..... A) Change in shape. B) Change in temperture. C) Physical change. D) Chemical change. Show Answer Correct Answer: D) Chemical change. ← PreviousNext →Related QuizzesClass 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 1Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 2Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 3Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 4Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 5Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 6Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 7Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 9Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 10Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books