Correct option is A
1. Vicats apparatus is used to determine consistency and initial/ final setting time of cement and mortar paste.
2. Soundness test on cement is carried out to detet the presence of uncombined or free lime, magnesia and excess sulphates in cement.
This test is performed with the help of Le- chatelier’s apparatus to determine the volume expansion of cement.
3. Los Angeles apparatus is used for find the Aggregate Abrasion value.
4. Kelli ball apparatus is used for find the workability of fresh mix concrete.
