engineering recuitment DRDO CEPTAM STA B Tier I (Sr. Technical Assistant) Mock Test 2022 General Science Chemistry Chemical Reaction
Gypsum (CaSO4.2H2O) is added to clinker during cement manufacturing to
1
to decrease the rate of setting of cement
2
bind the particles of calcium silicate
3
facilitate the formation of colloidal gel
4
impart strength to cement