NTA Abhyas NEET2020Chemistryp Block Elements (Group 13 & 14)Practice
Which is correct about setting of cement
Options
- AExothermic reaction
- BEndothermic reaction
- CNeither exothermic nor endothermic
- DNone of these
Correct answer
A. Exothermic reaction
Step-by-step solution
When water is added to cement an exothermic reaction occurs. During this process, the cement reacts with water to form a gelatinous mass which slowly sets into a hard mass having three dimensional network structure involving - S i - O - S i – and - S i - O - A l - chains.