........... सीमेंट का मुख्य घटक है-
The main constituent of ............ cement is-

  • 1

    MgOH

  • 2

    CaCO3

  • 3

    SiO2

  • 4

    MnO

Answer:- 3

Post your Comments

Your comments will be displayed only after manual approval.

Test
Classes
E-Book