Vicat’s apparatus is used to determine the
- AInitial setting time of cement
- BFinal setting time of cement
- CNormal consistency of cement
- DAll of the aboveCorrect
Solution
Concept
Applications of Vicat apparatus for cement
Formula
NONE
Step-by-step solution
1. Vicat’s apparatus is a standard laboratory instrument used for testing hydraulic cement. 2. It uses a plunger to determine the standard or normal consistency of cement paste. 3. With suitable needles substituted, it measures both initial setting time and final setting time of cement. Answer: D
Explanation
Vicat apparatus is a standard laboratory instrument used to evaluate multiple properties of cement paste using different interchangeable attachments. It uses a plunger to find normal consistency and specific needles to determine initial and final setting times. Because it covers all these functions, all option statements are correct.
Why the other options are wrong
A) Option A is correct, but options B and C are also determined using Vicat's apparatus. B) Option B is correct, but options A and C are also determined using Vicat's apparatus. C) Option C is correct, but options A and B are also determined using Vicat's apparatus.
Shortcut
Vicat's apparatus = Measures consistency, initial, and final setting times.
Common mistake
Selecting only initial setting time or consistency instead of recognizing that Vicat's apparatus performs all listed tests.
Correct answer: D) All of the above