Which of the following statements is incorrect?

  • A
    $NaHCO_3$ and $KHCO_3$ have the same crystal structure.
  • B
    On heating,$LiNO_3$ decomposes into $Li_2O$,$NO_2$,and $O_2$.
  • C
    Among alkali metals,$Li$ metal imparts a red colour to the flame.
  • D
    $Li_2SO_4$ does not form alum.

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By which method can the concentration of alkali metals be determined?

Select the incorrect statement.

Difficult
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Give uses of $sodium$ $hydrogen$ $carbonate$.

Match the following:
Elements Ore
$1$. Lithium $a$. Beryl
$2$. Sodium $b$. Spodumene
$3$. Beryllium $c$. Gypsum
$4$. Calcium $d$. Carnallite

Select the $INCORRECT$ statement regarding the solution of an alkali metal in liquid $NH_3$?

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