/10 Report a question What's wrong with this question? You cannot submit an empty report. Please add some details. 12345678910 Chapter 1 : Chemical Reactions and Equations 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 Blackening of silver ornaments occurs due to reaction with oxygen nitrogen carbon dioxide sulphur compounds 2 / 10 Which reaction requires heat for decomposition? Thermal Photochemical Electrolytic Neutralization 3 / 10 Production of electricity from chemical energy occurs in batteries electrolysis photosynthesis combustion 4 / 10 Addition of oxygen to a substance during a reaction signifies reduction oxidation neutralization decomposition 5 / 10 Exchange of ions between sodium sulphate and barium chloride solutions forms sodium chloride barium sulphate sulphuric acid sodium hydroxide 6 / 10 Extraction of iron in a blast furnace mainly involves decomposition reduction neutralization displacement 7 / 10 A chemical equation represents a reaction using words only symbols and formulae diagrams numerical values 8 / 10 Storing food in airtight containers helps mainly by preventing reduction hydrolysis fermentation oxidation 9 / 10 In the reaction Fe₂O₃ + 2Al → Al₂O₃ + 2Fe, the reduced substance is iron oxide aluminium aluminium oxide iron 10 / 10 Respiration is regarded as the reverse of photosynthesis because it absorbs energy releases oxygen consumes glucose releases energy Your score is 0% Restart quiz
