The two major constituents of Portland cement | vedclass

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Question

(A) Portland cement is primarily composed of calcium silicates and aluminates. The main constituents are tricalcium silicate $(3CaO \cdot SiO_2)$,dica

Vedclass · Accepted Answer

$CaO, SiO_2$

Vedclass · Answer

(A) Portland cement is primarily composed of calcium silicates and aluminates. The main constituents are tricalcium silicate $(3CaO \cdot SiO_2)$,dicalcium silicate $(2CaO \cdot SiO_2)$,tricalcium aluminate $(3CaO \cdot Al_2O_3)$,and tetracalcium aluminoferrite $(4CaO \cdot Al_2O_3 \cdot Fe_2O_3)$. Among these,$CaO$ and $SiO_2$ are the most abundant components,with $CaO$ typically accounting for approximately $64 \%$ and $SiO_2$ for approximately $21 \%$ of the composition.

List-$I$ (Chemical)	List-$II$ (Use)
$A$. $KOH$	$I$. Coolant
$B$. $Na_{(l)}$	$II$. Antacid
$C$. $Li$	$III$. Electrochemical Cells
$D$. $Mg(OH)_2$	$IV$. Absorbent for $CO_2$

The two major constituents of Portland cement are

Similar Questions

Match the following:

List-$I$ (Chemical) List-$II$ (Use)

$A$. $KOH$ $I$. Coolant

$B$. $Na_{(l)}$ $II$. Antacid

$C$. $Li$ $III$. Electrochemical Cells

$D$. $Mg(OH)_2$ $IV$. Absorbent for $CO_2$

The correct answer is:

Compare the solubility and thermal stability of the following compounds of the alkali metals with those of the alkaline earth metals: $(i)$ Nitrates,$(ii)$ Carbonates,$(iii)$ Sulphates.

$II-A$ (alkaline earth metals) and $II-B$ (zinc family) resemble in which of the following properties?

What is the nature of metal nitrates?

Which orders are correct?
$(I)$ Thermal stability: $BeSO_4 < MgSO_4 < CaSO_4 < SrSO_4$
$(II)$ Basic nature: $CaO > MgO > BeO > ZnO$
$(III)$ Solubility in water: $LiOH < NaOH < KOH < RbOH$
$(IV)$ Melting point: $NaCl > KCl > RbCl > CsCl > LiCl$

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