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In which of the following are the $s$-block elements arranged in the correct order of their melting points?
An alloy which does not contain copper is
Easy
View SolutionMatch the following:List-$I$ List-$II$ $A$. Alkali metals $I$. $ns^2 np^6$ $B$. Alkaline earth metals $II$. $ns^1$ $C$. Halogens $III$. $ns^2 np^5$ $D$. Noble gases $IV$. $ns^2$
| List-$I$ | List-$II$ |
|---|---|
| $A$. Alkali metals | $I$. $ns^2 np^6$ |
| $B$. Alkaline earth metals | $II$. $ns^1$ |
| $C$. Halogens | $III$. $ns^2 np^5$ |
| $D$. Noble gases | $IV$. $ns^2$ |
The two major constituents of Portland cement are
DifficultAP EAMCET 2022
View SolutionMatch the following items in Column-$I$ with the corresponding items in Column-$II$.
Column-$I$ Column-$II$ $I$. $Na_2CO_3 \cdot 10H_2O$ $A$. Portland cement ingredient $II$. $Mg(HCO_3)_2$ $B$. Castner-Kellner process $III$. $NaOH$ $C$. Solvay process $IV$. $Ca_3Al_2O_6$ $D$. Temporary hardness
| Column-$I$ | Column-$II$ |
|---|---|
| $I$. $Na_2CO_3 \cdot 10H_2O$ | $A$. Portland cement ingredient |
| $II$. $Mg(HCO_3)_2$ | $B$. Castner-Kellner process |
| $III$. $NaOH$ | $C$. Solvay process |
| $IV$. $Ca_3Al_2O_6$ | $D$. Temporary hardness |
DifficultJEE MAIN 2019
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