This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry – Quiz 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part I) Chapter 1 Some Basic Concepts Of Chemistry Quiz 13 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Using the rules for significant figures, the correct answer for the expression (0.02858 x 0.112)/0.5702 will be A) 0.005613. B) 0.00561. C) 0.0056. D) 0.006. Show Answer Correct Answer: B) 0.00561. 2. States of matter A) Solid, liquid and gases. B) Solid and gas. C) Solid & liquid. D) Liquid and gas. Show Answer Correct Answer: A) Solid, liquid and gases. 3. Mass of sucrose C$_{12}$H$_{22}$O$_{11}$ produced by mixing 84 gm of carbon, 12 gm of hydrogen and 56 lit. O$_{2}$ at 1 atm & 273 K according to given reaction, is C(s) + H$_{2}$(g) + O$_{2}$(g) $\rightarrow$ C$_{12}$H$_{22}$O$_{11}$ (s) A) 138.5. B) 155.5. C) 172.5. D) 199.5. Show Answer Correct Answer: B) 155.5. 4. Avogadro's no is the no. of particles present in A) 1 molecule. B) 1 mole. C) 1 atom. D) 1 kg. Show Answer Correct Answer: B) 1 mole. 5. Atomicity of ammonium phosphate molecule is A) 5. B) 10. C) 15. D) 20. Show Answer Correct Answer: D) 20. 6. The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1:4. The ratio of number of their molecule is: A) 1:8. B) 3:16. C) 1:4. D) 7:32. Show Answer Correct Answer: D) 7:32. 7. Dm$^{3 }$at STP is A) Molar volume. B) Molar atomic mass. C) Atomic volume. D) Molecular mass. Show Answer Correct Answer: A) Molar volume. 8. Sugarcane juice and NaCl solution results in A) Homogenous mixture. B) Heterogenous mixture. C) Pure substances. D) None of these are correct. Show Answer Correct Answer: A) Homogenous mixture. 9. Boron has two isotopes boron-10 and boron-11 whose percentage abundances are 19.6% and 80.4% respectively. What is the average atomic mass of boron? A) 10.8. B) 10.6. C) 9.6. D) NNone of these. Show Answer Correct Answer: A) 10.8. 10. How many sigma bonds are there in acetylene molecule? A) 1. B) 3. C) 2. D) 5. Show Answer Correct Answer: B) 3. 11. Mass / molar mass = number of moles (n) A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 12. Number of moles 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. How many moles of magnesium are present in 96u of Magnesium A) 0.25. B) 25. C) 4. D) 0.4. Show Answer Correct Answer: C) 4. 14. A ..... is a transition of matter from one state to another A) Chemical change. B) Phase change. C) All the above. D) None of the above. Show Answer Correct Answer: B) Phase change. 15. Which of the following statements in relation to the hydrogen atom is correct? A) 3s orbital is lower in energy than 3p orbital. B) 3p orbital is lower in energy than 3d orbital. C) 3s and 3p orbitals are of lower energy than 3d orbital. D) 3s, 3p and 3d orbitals all have the same energy. Show Answer Correct Answer: D) 3s, 3p and 3d orbitals all have the same energy. 16. H$_{2 }$and CH$_{4 }$have something in common what is it? A) They have same number of hydrogen atoms. B) They are organic in nature. C) They both are called as molecule. D) They are elements. Show Answer Correct Answer: C) They both are called as molecule. 17. An empirical formula represents A) The simplest whole number ratio of various atoms present in a compound. B) The exact number of different types of atoms present in a molecule of a compound. C) All the above. D) None of the above. Show Answer Correct Answer: A) The simplest whole number ratio of various atoms present in a compound. 18. What is the unit of mole fraction A) Gram. B) Mole. C) Mol/L. D) Unitless. Show Answer Correct Answer: D) Unitless. 19. 18 g of water is A) 3 mol. B) 2 mol. C) 1 mol. D) 0.5 mol. Show Answer Correct Answer: C) 1 mol. 20. 1 gram-atom of oxygen is A) 1 gm of oxygen. B) 16 g of oxygen. C) 22.4 gms of oxygen. D) 8 g of oxygen. Show Answer Correct Answer: B) 16 g of oxygen. 21. Atomic mass of neon A) 20.18. B) 10.81. C) 14.4. D) All are wrong. Show Answer Correct Answer: A) 20.18. 22. How many moles are there in 9 g of water? A) 2. B) 1. C) 0.5. D) None of the above. Show Answer Correct Answer: C) 0.5. 23. Which metal is in the liquid state at room temperature? A) Carbon. B) Hydrogen. C) Mercury. D) Iodine. Show Answer Correct Answer: C) Mercury. 24. 2 KClO$_{3}$ $\rightarrow$ 2 KCl + 3 O$_{2}$ How many moles of oxygen are produced when 6.7 moles of KClO$_{3}$ decompose completely? A) 6.7 mol. B) 1.0 mol. C) 10.1 mol. D) 4.5 mol. Show Answer Correct Answer: C) 10.1 mol. 25. XCO + yO$_{2}$ gives zCO$_{2}$$_{x, y and z are}$ A) 2, 2, 1. B) 1, 2, 2. C) 1, 4, 1. D) 2, 1, 2. Show Answer Correct Answer: D) 2, 1, 2. ← 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