The composition of mixture of clay and lime stone in the raw for cement material is __________________?
Correct answer: A. 75% lime stone and 25% clay
- A. 75% lime stone and 25% clay
- B. 25% lime stone and 75% clay
- C. 15% lime stone and 55% clay
- D. 55% lime stone and 15% clay
Explanation
The usual cement raw mix contains approximately 75% calcareous material, mainly limestone, and 25% argillaceous material, mainly clay. Hence the stated composition is 75% limestone and 25% clay. Students may choose b by reversing the roles, although limestone is the major component because calcium compounds form most of the cement.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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
729 free Thermochemistry and Energetics of Chemical Reactions MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Exothermic and Endothermic Reactions questions
The important function of burning zone in the rotary kilm is __________________?
Argillaceous material does not include________________?
What is clinker ?
Which sequence of steps is correct for the manufacture of cement ?
Cement is a mixture of so many compounds roasted in rotary kiln. Which substances has greater percentage ?
Cement is a mixture of________________?