This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 16 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Elements X and Y combine to form two compounds XY and X$_{2}$Y. Find the atomic weight of X and Y, if the weight of 0.1 moles of XY is 10g and 0.05 moles of X$_{2}$Y is 9g A) 30, 20. B) 80, 20. C) 60, 40. D) 20, 30. Show Answer Correct Answer: B) 80, 20. 2. The term used for substances which are formed as a result of chemical reaction A) Reactants. B) Catalyst. C) Products. D) Precipitate. Show Answer Correct Answer: C) Products. 3. The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1:4.The ratio of number of their moles is A) 1:81. B) 3:16. C) 1:4. D) 7:32. Show Answer Correct Answer: D) 7:32. 4. What is a functional group? A) Atoms or group of atoms that give specific characteristics to a molecule. B) Group of molecules that make up a group of atoms. C) Group of molecules that give specific characteristics to an atom. D) Group of atoms that give specific characteristics to an element. Show Answer Correct Answer: A) Atoms or group of atoms that give specific characteristics to a molecule. 5. How much water is produced by complete combustion of 16g methane (CH4)? A) 18 g. B) 36 g. C) 22 g. D) 44 g. Show Answer Correct Answer: B) 36 g. 6. What do we call the chemistry unit to quantify the amount of a substance? A) Particles. B) Kilogram. C) Mole. D) Liter. Show Answer Correct Answer: C) Mole. 7. What is the concentration of nitrate ions if equal volumes of 0.1 MAgNO$_{3}$ and 0.1 M NaCl are mixed together A) 0.1 M. B) 0.2 M. C) 0.05 M. D) 0.25 M. Show Answer Correct Answer: C) 0.05 M. 8. Alkene +? $\rightarrow$ alcohol A) Hydrogen. B) Oxygen. C) Water. D) Carbon dioixde. Show Answer Correct Answer: C) Water. 9. At what temperature degree celsius and degree fahrenheit are same? A) -273.15. B) There is no such temperature. C) -40. D) None of the above. Show Answer Correct Answer: C) -40. 10. Tons of Fe2O3 containing 20% impurities will give iron by reduction with H2 equal to A) 112 tons. B) 80 tons. C) 160 tons. D) 56 tons. Show Answer Correct Answer: B) 80 tons. 11. Atomic mass of Na A) 23. B) 23.5. C) 24. D) 29. Show Answer Correct Answer: A) 23. 12. Gram molecule of sugar in 547.2 gram are:(Mol. mass of sugar = 342) A) 1.6. B) 2.2. C) 342. D) 548. Show Answer Correct Answer: A) 1.6. 13. Number of moles present in 22.0g of carbondioxide is A) 2. B) 22. C) 0.5. D) 0.25. Show Answer Correct Answer: C) 0.5. 14. The valency of copper in CuO is: A) 3+. B) 2+. C) 1+. D) None of the above. Show Answer Correct Answer: B) 2+. 15. The valency of Chlorine in AlCl$_{3}$ is A) 1. B) 3. C) 2. D) None of the above. Show Answer Correct Answer: A) 1. 16. Which of the following is a Chemical fertilizer? A) Urea. B) Sodium nitrate. C) Ammonium sulphate. D) All of these. Show Answer Correct Answer: D) All of these. 17. Which of the following is not used to measure volume? A) Burette. B) Graduated cylinder. C) Volumetric flask. D) None of these. Show Answer Correct Answer: D) None of these. 18. Which of the following reactions is not correct according to the law ofconservation of mass. A) 2Mg(s) + O2(g) $\rightarrow$ 2MgO(s). B) C3H8(g) + O2(g) $\rightarrow$CO2(g) + H2O(g). C) P4(s) + 5O2(g)$\rightarrow$ P4O10(s). D) CH4(g) + 2O2(g) $\rightarrow$ CO2(g) + 2H2O (g). Show Answer Correct Answer: B) C3H8(g) + O2(g) $\rightarrow$CO2(g) + H2O(g). 19. How many Hydrogen atoms are in 4H$_{2}$O? A) 6. B) 8. C) 2. D) 4. Show Answer Correct Answer: B) 8. 20. The maximum number of single covalent bonds held by a carbon atom in organic compound is ..... A) 2. B) 3. C) 4. D) 5. Show Answer Correct Answer: C) 4. 21. If 20.0 g of CaCO3 is treated with 20.0 g of HCl, how many grams of CO2 will be produced? A) 12.05 g. B) 15.6 g. C) 8.8 g. D) 20 g. Show Answer Correct Answer: C) 8.8 g. 22. The number 234, 000 expressed in scientific notation is: A) $2.34 \times 10^3$. B) $2.34 \times 10^4$. C) $2.34\times10^5$. D) $2.34\times10^6$. Show Answer Correct Answer: C) $2.34\times10^5$. 23. The empirical formula and molecular mass of a compound are CH2O and180 g respectively. What will be the molecular formula of the compound? A) C2H4O2. B) HCHO. C) C6H12O6. D) CH3COOH. Show Answer Correct Answer: C) C6H12O6. 24. Which of the following properties generally decreases along a period? A) Ionization Energy. B) Metallic Character. C) Electron Affinity. D) Valency. Show Answer Correct Answer: B) Metallic Character. 25. Zinc sulphate is A) ZnSO$_{4}$. B) ZnSO$_{3}$. C) Zn$_{2}$SO$_{2}$. D) ZnNO$_{3}$. Show Answer Correct Answer: A) ZnSO$_{4}$. ← 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