1. Lime has been conventionally classified into how many types?
2. How many brick lined tanks are used in tank slaking method?
3. Which of the following is an example of silicious rock?
(D) all of these
4. Which of the following ions causes the cement to set quickly?
5. What is the initial setting time of cement?
(A) 1 hour
(B) 30 minutes
(C) 15 minutes
(D) 30 hours
6. Which one of the below cannot be used as a substitute for sand?
(B) Quarry dust