Which one of the following statements is correct?

  • A
    $Mg$ plays roles in neuromuscular function and interneuronal transmission
  • B
    The daily requirement of $Mg$ and $Ca$ in the human body is estimated to be $0.2-0.3 \ g$
  • C
    All enzymes that utilise $ATP$ in phosphate transfer require $Ca$ as the cofactor
  • D
    The bone in human body is an inert and unchanging substance

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Which of the following alkali metals is smallest in size?

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Which of the following alkali metal ions has the highest ionic mobility in aqueous solution?

Which one of the following nitrates will leave behind a metal on strong heating?

Match List-$I$ with List-$II$:
List-$I$ List-$II$
$A$. Slaked lime $I$. $NaOH$
$B$. Dead burnt plaster $II$. $Ca(OH)_2$
$C$. Caustic soda $III$. $Na_2CO_3 \cdot 10H_2O$
$D$. Washing soda $IV$. $CaSO_4$

Choose the correct answer from the options given below:

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