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  • Which fertilizers promotes fast growth and development of plants?

    all the answers are correct
    phosphorus fertilizer
    Nitrogen fertilizers
    potassium fertilizer
  • Which one is not used to make ceramics?

    silicates
    feldspar
    Stones
    hydrated aluminum silicate
  • The molecular formula of hydrated aluminum silicate is ______.

    Al2O3.SiO2.2H2O
    Al2O3
    Al2O3.SiO2.2H2
    Al2O3.SiO2
  • The coating forms a thin layer over the surface. This process is termed as ______.

    pulverization
    besimerization
    Glazing
    smelting
  • The substance which is not affected by acid, alkali or other chemicals is ______.

    limestones
    ceramics
    wood
    cement
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