/10 Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 12345678910 Chapter 1 : Some Basic Concepts of Chemistry This Quiz Contains a set of 10 Questions. The Passing Cut-off is 60%. To start the Quiz, click on the Start Button. All the Best! 1 / 10 If 2 g H₂ reacts completely with oxygen, mass of O₂ required is 8 g 16 g 32 g 4 g 2 / 10 In a reaction, the excess reactant is the one which Remains unused Reacts completely Is limiting Determines yield 3 / 10 Number of moles of atoms in 1 mole of O₃ is 1 2 3 6 4 / 10 The foundation of quantitative chemistry is based on Atomic theory Mole concept Chemical laws Stoichiometry 5 / 10 A reaction gives 80 g product instead of 100 g. Percentage yield is 0.6 0.7 0.8 0.9 6 / 10 The mass of one mole of electrons is approximately 9.1×10⁻³¹ kg 9.1×10⁻²⁸ kg 5.5×10⁻⁷ kg 5.5×10⁻⁴ kg 7 / 10 Which of the following has maximum mass? 1 mole H₂ 1 mole O₂ 1 mole N₂ 1 mole CO₂ 8 / 10 How many moles are present in 22 g of CO₂? 0.25 0.5 1 2 9 / 10 A reaction yields less product than expected due to Side reactions Excess reagent Limiting reagent Balanced equation 10 / 10 Which compound obeys law of multiple proportions with CO? CO₂ H₂O CH₄ NH₃ Your score is 0% Restart quiz
