Argillaceous material does not include________________?
Correct answer: B. marine shells
- A. vlay
- B. marine shells
- C. slate
- D. blast furnace slag
Explanation
Argillaceous materials are rich in silica and alumina and include clay, slate and some industrial slags. Marine shells are mainly calcium carbonate, so they are calcareous rather than argillaceous. Students may choose d because blast furnace slag is an industrial waste, but it can serve as an argillaceous material in cement manufacture.
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About Exothermic and Endothermic Reactions
Exothermic reactions release heat to the surroundings and have negative enthalpy change, while endothermic reactions absorb heat and have positive enthalpy change. The topic uses energy profiles to identify reactants, products and activation energy, and includes bond energy, enthalpy diagrams, calorimetry and Hess's law for calculating overall heat changes.
Practise Thermochemistry and Energetics of Chemical Reactions
728 free Thermochemistry and Energetics of Chemical Reactions MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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