MCQ
Which of the following is solid in nature
- A$NO$
- B${N_2}O$
- C${N_2}{O_3}$
- ✓${N_2}{O_5}$
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($1$) The compound $R$ is
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($2$) The compound $T$ is
($A$) glycine
($B$) alanine
($C$) valine
($D$) serine
Given the answer question ($1$) and ($2$) 
Count the number of atoms existing in their zero oxidation state in each molecule. Their sum is . . . . .
$E_{{A^{3 + }}/A}^o = 1.50\,\,V\,,$ $E_{{B^{2 + }}/B}^o = 0.3\,\,V,$
$E_{{C^{3 + }}/C}^o = - \,0.74\,\,V,$ $E_{{D^{2 + }}/D}^o = - \,2.37\,\,V.$
The correct sequence in which the various metals are deposited at the cathode is