11.For testing compressive strength of cement, the size of cube used is

12.The main constituent which imparts hydraulicity to hydraulic lime is

13.Gypsum consists of

14.Assertion A : Pure lime takes a long time to develop adequate strength. Reason R : Pure lime has slow hardening characteristics. Select your answer according to the coding system given below :

15.The main constituent of cement which is responsible for initial setting of cement is