Correct statement of the following

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

Gyspum decreases the rate of setting of cement

The order of percentage of ingredients in portland cement is Ca2SiO4 > Ca3SiO5 > Ca3Al2O6

Setting of cement is dehydration

The raw materials for the manufacture of cement are clay and graphite

answer is A.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

The hot clinkers are cooled by cold air and are mixed with 2-3% gypsum to slow down the process of setting of cement and there by imparting greater strength to it.Portland cement clinker consists ofDicalcium silicate [Ca2SiO4] - 26%Tricalcium silicate [Ca3SiO5] - 57% &Tricalcium aluminate [Ca3Al2O6] - 11%The order of % of ingredients in portland cement isCa3SiO557%>Ca2SiO426%>Ca3Al2O611%Setting of cement is rehydration, when water is added to cement, cement reacts with water of form a gelatinous mass which slowly sets into a hard mass having 3D - network structure.Raw materials for the manfacture of cement are1) Lime stone CaCO32) Clay [Consists SiO2 + Al2O3]3) Gypsum [CaSO4.2H2O]4) MgO + Fe2O3 + SO3

Watch 3-min video & get full concept clarity