JEE Main & Advanced Chemistry The s-Block Elements / s-ब्लॉक के तत्व Question Bank Alkaline Earth Metals

  • question_answer
    Setting of cement is an [DPMT 1984]

    A) Exothermic reaction

    B) Endothermic reaction

    C) Neither exothermic nor endothermic

    D) None of these

    Correct Answer: A

    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 \[-Si-O-Si\]- and \[-Si-O-Al-\] chains.


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