This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry – Quiz 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 14 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which are the people who prescribe medicines A) Pharmacists. B) Doctors. C) None. D) None of the above. Show Answer Correct Answer: B) Doctors. 2. How many grams of Na$_{2}$CO$_{3}$ should be dissolved to make 100 cm$^{3}$ of 0.15 M Na$_{2}$CO$_{3}$ solution? A) 3.6 g. B) 1.59 g. C) 2.80g. D) 4.32 g. Show Answer Correct Answer: B) 1.59 g. 3. Atoms of the same element that have different masses are called A) Moles. B) Isotopes. C) Nuclides. D) Neutrons. Show Answer Correct Answer: B) Isotopes. 4. What is the mass of 4.5 moles of water? A) 24.5 g. B) 81.0 g. C) 85.6 g. D) 68.5 g. Show Answer Correct Answer: B) 81.0 g. 5. G of CaCO3 is treated with 1 L of 1 N HCI. What would be the weight of CO2 liberated after the completion of the reaction? A) 55 g. B) 11 g. C) 22 g. D) 33 g. Show Answer Correct Answer: A) 55 g. 6. Solvent is best defined as- A) A mixture in which the substances are spread out evenly between one another and cannot be told apart. B) The ability of a substance to dissolve in another substance. C) A substance that dissolves in another substance. D) A substance into which another substance dissolves. Show Answer Correct Answer: D) A substance into which another substance dissolves. 7. Kg of N$_{2}$ (g) and 10.0 kg of H$_{2}$ (g) are mixed to produce NH$_{3}$ (g). The limiting reagent in this reaction is: A) H$_{2}$. B) H. C) N$_{2}$. D) N. Show Answer Correct Answer: A) H$_{2}$. 8. Number of moles of CO$_{2 }$present in 22.0g of carbondioxide is A) 2. B) 22. C) 0.5. D) 0.25. Show Answer Correct Answer: C) 0.5. 9. No of alpha hydrogen atom in CH3-CH2+ is A) 1. B) 2. C) 3. D) 4. E) 3. Show Answer Correct Answer: C) 3. 10. What volume of 0.250 M HCl (aq) is required to react completely with 22.6 g of sodium carbonate according to the reaction:Na$_{2}$CO$_{3}$ (s) + 2HCl (aq) $\rightarrow$ 2NaCl (aq) + H$_{2}$O + CO$_{2}$ A) 1000 ml. B) 1704 ml. C) 2600 ml. D) 1802 ml. Show Answer Correct Answer: B) 1704 ml. 11. Elements having same atomic number but different atomic mass number is A) Isobars. B) Isotopes. C) Isotones. D) Isodiapheres. Show Answer Correct Answer: B) Isotopes. 12. Acidified potassium dichromate is an example of ..... A) An alkali. B) A reducing agent. C) A fuel. D) An oxidising agent. Show Answer Correct Answer: D) An oxidising agent. 13. N x 22.4 litres = volume A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 14. Given the following:42.07% Na, 18.89% P, and 39.04% O, determine the empirical formula. A) NaPO$_{2}$. B) Na$_{2}$PO$_{3}$. C) Na$_{3}$PO$_{4}$. D) NaPO$_{4}$. Show Answer Correct Answer: C) Na$_{3}$PO$_{4}$. 15. What term describes alkane molecules that contain C-C single bonds? A) Saturated. B) Unsaturated. C) All the above. D) None of the above. Show Answer Correct Answer: A) Saturated. 16. HNO$_{3}$ is called as A) Nitrous acid. B) Nitric acid. C) Hydrazoic acid. D) Ammonia. Show Answer Correct Answer: B) Nitric acid. 17. The correct electronic configuration of Cr (Z=24) is A) [Ar] 3d$^{ 5}$ 4s $^{1}$. B) [Ar] 3d$^{ 4}$ 4s 2. C) [Ar] 3d$^{ 9}$ 4s 2. D) [Ar] 3d$^{ 10}$ 4s $^{1}$. Show Answer Correct Answer: A) [Ar] 3d$^{ 5}$ 4s $^{1}$. 18. Which of the following sub levels does not exist A) 2p. B) 3d. C) 2d. D) 5f. E) 4f. Show Answer Correct Answer: C) 2d. 19. Limiting reagent A) Catalyses a chemical reaction. B) Speeds up a chemical reaction. C) Stops a chemical reaction. D) Does not impact a chemical reaction. Show Answer Correct Answer: C) Stops a chemical reaction. 20. Molecular mass of methane is A) 18u. B) 16u. C) 20u. D) None of the above. Show Answer Correct Answer: B) 16u. 21. What is the molecular formula of Lactic acid ( Empirical formula CH$_{2}$O ) if n=3, A) CH$_{2}$O. B) C$_{4}$H$_{6}$O$_{6}$. C) C$_{3}$H$_{6}$O$_{3}$. D) None of the above. Show Answer Correct Answer: C) C$_{3}$H$_{6}$O$_{3}$. 22. The representation for sulphate ion is A) SO42-. B) SO3-. C) SU2-. D) All. Show Answer Correct Answer: A) SO42-. 23. The weight of carbon monoxide having same number of oxygen atoms as are present in 88 g of carbon dioxide are: A) 44 g. B) 112 g. C) 12 g. D) 32 g. Show Answer Correct Answer: B) 112 g. 24. Which kind of mixture is air? A) HOMOGENOUS. B) HETEROGENOUS. C) None of the above. D) All of the above. Show Answer Correct Answer: A) HOMOGENOUS. 25. 1mole of O$_{2}$ gas A) 32 g of oxygen. B) 22.4 L of oxygen. C) N$_{A }$number of molecules. D) All of these. Show Answer Correct Answer: D) All of these. ← 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 8Class 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 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books