MCQ
Which of the following acid will release maximum amount of heat when completely neutralised by strong base $NaOH$ ?
- A$1\,M\,\,HCl$
- B$1\,M\,\,HNO_3$
- C$1\,M\,\,HClO_4$
- ✓$1\,M\,\,H_2SO_4$
${H_2}S{O_4}\,\, \to \,\,2{H^ \oplus }\, + \,S{O_4}^{2 - }$
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(Atomic mass : $Cl =35.5 \,amu , H =1\, amu$ )
$(I)$ $Be$ has smaller atomic radius compared to $Mg$
$(II)$ $Be$ has higher ionization enthalpy than $Al.$
$(III)$ Charge/radius ratio of $Be$ is greater than that of $Al$.
$(IV)$ Both Be and $Al$ form mainly covalent compounds.
(Rounded-off to the nearest integer) $\left[ h =6.63 \times 10^{-34}\, Js , c =3.00 \times 10^{8} \,ms ^{-1}\right.$ $,$ $\left. N _{ A }=6.02 \times 10^{23}\, mol ^{-1}\right]$