This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 2 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The amount of KClO$_{3}$ needed to supply sufficient oxygen for burning 112 L of CO gas at N.T.P is ..... A) 9.859 g. B) 6.023 g. C) 308.25 g. D) 204.16 g. Show Answer Correct Answer: D) 204.16 g. 2. What is the mass percent of carbon in carbon dioxide? A) 40. B) 27. C) 32. D) 10. Show Answer Correct Answer: B) 27. 3. The product of reacting propene with hydrochloric acid is: A) 2-chloropropane. B) 2-chloropropene. C) 2-chloropropyne. D) Chloropropane. Show Answer Correct Answer: A) 2-chloropropane. 4. Which of the following is not postulated in Dalton's atomic theory? A) Mass is neither created nor destroyed. B) Matter consists of indivisible atoms. C) There is a rearrangement in the atoms of reactants in a chemical reaction. D) Compounds are formed due to the combinmation of atoms of various elements in a fixed ratio. Show Answer Correct Answer: A) Mass is neither created nor destroyed. 5. How many Oxygen atoms are in H$_{2}$O? A) 1. B) 2. C) 0. D) 4. Show Answer Correct Answer: A) 1. 6. Equivalent mass of HNO3 (At.mass of N=14) A) 65. B) 67. C) 63. D) 64. Show Answer Correct Answer: C) 63. 7. Naturally occurring chlorine is 75% Cl$^{35}$ which has an atomic mass of 35 amu and 25% Cl$^{37}$ which has a mass of 37 amu . Calculate the average atomic mass of chlorine- A) 35.5 amu. B) 36.5 amu. C) 71 amu. D) 72 amu. Show Answer Correct Answer: A) 35.5 amu. 8. How many common scales does temperature have? A) 3. B) 1 to 100. C) -273.15 to +273.15. D) All of the above. Show Answer Correct Answer: A) 3. 9. If the kinetic energy of an electron is increased four times, the wavelength of the de-Broglie wave associated with it would become A) Two times. B) Half. C) One fourth. D) Four times. Show Answer Correct Answer: B) Half. 10. How many significant figures are in 0.0025? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 11. Negative charge of carbanion can be dispersed by ..... A) (+I) effect and resonance. B) (-I) effect and resonance. C) Hyperconjugation. D) (+M) effect and resonance. Show Answer Correct Answer: B) (-I) effect and resonance. 12. How many significant figures:4.20 cm A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: C) 3. 13. If 10 volumes of dihydrogen react with 5 volumes of dioxygen, how many volumes of water vapor are produced? A) 5 volumes. B) 10 volumes. C) 15 volumes. D) 20 volumes. Show Answer Correct Answer: B) 10 volumes. 14. Silver chloride is A) AgBr. B) AgCl$_{2}$. C) AgCl$_{3}$. D) AgCl. Show Answer Correct Answer: D) AgCl. 15. Formula of baking soda A) NaHCO3. B) Nacl. C) H2SO4. D) None of the above. Show Answer Correct Answer: A) NaHCO3. 16. How many unpaired electrons does an atom of chromium contain?this can be tricky ..... A) 2. B) 3. C) 4. D) 5. E) 6. Show Answer Correct Answer: E) 6. 17. What is the mass of 66 lb of sulfur in g A) 300000g. B) 3000g. C) 300g. D) 30000g. Show Answer Correct Answer: D) 30000g. 18. Atomic mass of carbon A) 12. B) 20.14. C) 3.3. D) 20.22. Show Answer Correct Answer: A) 12. 19. Bonds between metal and non metal A) Ionic compounds. B) Molecular compounds. C) All the above. D) None of the above. Show Answer Correct Answer: A) Ionic compounds. 20. Capital letter as a unit indicates the A) SI unit. B) IUPAC system. C) Name. D) CGS system. Show Answer Correct Answer: C) Name. 21. The formula for Silver [I] chloride is: A) AgCl. B) SiCl. C) AgCl$_{2}$. D) AgCl$_{2}$. Show Answer Correct Answer: A) AgCl. 22. 1 Kg = A) 1000g. B) 100g. C) 10g. D) 1g. Show Answer Correct Answer: A) 1000g. 23. How many valence electrons are in an atom of Ar? A) 2. B) 8. C) 4. D) 1. Show Answer Correct Answer: B) 8. 24. Weight of oxygen in one mole each of Fe$_{2}$O$_{3}$ and FeO is in the simple ratio of A) 3:2. B) 1:2. C) 2:1. D) 3:1. Show Answer Correct Answer: D) 3:1. 25. Molecular mass of nitric acid A) 63. B) 53. C) 62. D) 52. Show Answer Correct Answer: A) 63. ← 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 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 10Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books