The two major constituents of Portland cement are

What are the products formed when $AgNO_3$ is heated strongly?

Match the elements given in Column-$I$ with the properties mentioned in Column-$II$ :

Column-$I$	Column-$II$
$A$. $Li$	$1$. Insoluble sulphate
$B$. $Na$	$2$. Strongest monoacidic base
$C$. $Ca$	$3$. Most negative $E^{\circ}$ cell value among alkali metals
$D$. $Ba$	$4$. Insoluble oxalate
	$5$. $6s^2$ outer electronic configuration

Which of the following is $NOT$ obtained when metal carbides react with $H_2O$?

Which of the following order$(s)$ is/are correct?
$(A)$ Thermal stability: $BeSO_4 < MgSO_4 < CaSO_4 < SrSO_4$
$(B)$ Melting point: $NaCl > KCl > RbCl > CsCl$
$(C)$ Solubility: $LiOH < NaOH$
$(D)$ Lattice energy: $KF > KCl > KBr > KI$

'Bordeaux mixture' is used as a fungicide. It is a mixture of