Cement MCQ with answer and solution

Concept

In the dry process, raw materials are ground, mixed and fed to the kiln in dry powder form.

Step-by-step solution

1. Cement is made by the dry process or the wet process. 2. In the wet process, raw materials are mixed with water to form a slurry. 3. In the dry process, raw materials are crushed, ground and mixed in the dry state. 4. This dry raw meal is fed to the rotary kiln, so the answer is the dry process.

Explanation

In the dry process, limestone and clay are dried, ground into fine powder and mixed without water. This dry raw meal goes to the rotary kiln. It uses less fuel than the wet process, so it is common in modern plants.

Why the other options are wrong

B: 'Moist process' is not a standard cement manufacturing method. C: Grinding is only one step, not the whole process. D: The wet process uses slurry with water, not a dry state.

Shortcut

Dry state means dry process.

Common mistake

Confusing the grinding step with the name of the manufacturing process.