In curing cement plasters water is sprinkled from time to time. This helps in

  • Option 1)

    keeping it cool

  • Option 2)

    developing interlocking needle­-like crystals of hydrated silicates

  • Option 3)

    hydrating sand and gravel mixed with cement

  • Option 4)

    converting sand into silicic acid.

 

Answers (1)

As we learnt in 

Oxide of Silicon -

SiO2 form three dimensional network

- wherein

Due to lack of formation of \pi - bonds with oxygen

 

 

Water helps in hydration of calcium aluminates and calcium silicates which change in to their colloidal gets by developing interlocking needle like crystals of hydrated silicates.


Option 1)

keeping it cool

This is incorrect option

Option 2)

developing interlocking needle­-like crystals of hydrated silicates

This is correct option

Option 3)

hydrating sand and gravel mixed with cement

This is incorrect option

Option 4)

converting sand into silicic acid.

This is incorrect option

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