Match the following lists:
| List-I (Property of Cement) | List-II (Apparatus) |
|---|---|
| A.Specific gravity | 1.Blaine's apparatus |
| B.Setting time | 2.Le-Chatelier's flask |
| C.Soundness | 3.Autoclave |
| D.Fineness | 4.Vicat's apparatus |
Select the correct answer using the code given below (A-B-C-D):
- A1 - 2 - 3 - 4
- B2 - 1 - 4 - 3
- C2 - 4 - 3 - 1Correct
- D4 - 2 - 1 - 3
Solution
Concept
Each cement property is tested with a standard apparatus.
Step-by-step solution
1. Specific gravity: Le-Chatelier's flask, so A-2. 2. Setting time: Vicat's apparatus, so B-4. 3. Soundness: Autoclave test, so C-3. 4. Fineness: Blaine's air permeability apparatus, so D-1. 5. Code is 2-4-3-1, which is option (C).
Explanation
Le-Chatelier's flask measures specific gravity, and Vicat's apparatus measures setting time. The autoclave test checks soundness. Blaine's apparatus measures fineness as specific surface.
Why the other options are wrong
(A) Blaine's apparatus is not used for specific gravity. (B) Blaine's is not used for setting time, and Vicat's is not used for soundness. (D) Vicat's apparatus is not used for specific gravity.
Common mistake
Mixing up Le-Chatelier's flask (specific gravity) with Le-Chatelier's apparatus (soundness).
Correct answer: C) 2 - 4 - 3 - 1