UPSC Chemistry Environmental Chemistry / पर्यावरणीय रसायन Question Bank Environmental Chemistry

  • question_answer
          Which one of the following is not contained in Portland cement? [NDA]

    A) \[C{{a}_{3}}A{{l}_{3}}{{O}_{6}}\]         

    B)          \[C{{a}_{3}}Si{{O}_{5}}\]

    C) \[C{{a}_{2}}Si{{O}_{4}}\]           

    D)          \[C{{a}_{3}}{{(P{{O}_{4}})}_{2}}\]

    Correct Answer: D


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