1
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

For a $$\mathrm{Ag}-\mathrm{Zn}$$ button cell, net reaction is

$$\begin{gathered} \mathrm{Zn}(s)+\mathrm{Ag}_2 \mathrm{O}(s) \longrightarrow \mathrm{ZnO}(s)+2 \mathrm{Ag}(s) \\ \Delta G_f^{\circ}\left(\mathrm{Ag}_2 \mathrm{O}\right)=-11.21 \mathrm{~kJ} \mathrm{~mol}^{-1} \\ \Delta G_f^{\circ}(\mathrm{ZnO})=-318.3 \mathrm{~kJ} \mathrm{~mol}^{-1} \end{gathered}$$

Then, $$E^{\circ}$$ cell of the button cell is

A
$$3.182 \mathrm{~V}$$
B
$$-1.621 \mathrm{~V}$$
C
$$1.591 \mathrm{~V}$$
D
$$-1.591 \mathrm{~V}$$
2
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

Which of the following oxyacid does not contain $$\mathrm{P}-\mathrm{O}-\mathrm{P}$$ bond?

A
Isohypophosphoric acid
B
Pyrophosphorus acid
C
Diphosphoric acid
D
Hypophosphoric acid
3
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

Niobium crystallises in body centred cubic structure. If density is $$8.55 \mathrm{~g} \mathrm{~cm}^{-3}$$, then the atomic radius of niobium is (atomic mass of niobium $$=93 u$$ )

A
163 pm
B
143 pm
C
182 $$\mathop A\limits^o $$
D
152 $$\mathop A\limits^o $$
4
AIIMS 2018
MCQ (Single Correct Answer)
+1
-0.33

The IUPAC name of the complex $$[\mathrm{Pt}\left(\mathrm{NH}_3\right)_3 \mathrm{Br}\left(\mathrm{NO}_2\right) \mathrm{Cl}] \mathrm{Cl}$$ is

A
triamine chloridobromidonitro platinum (IV) chloride
B
triamine bromidochloridonitro platinum (IV) chloride
C
triamine bromidochloridonitro platinum (II) chloride
D
triamine chloridobromidonitro platinum (II) chloride
EXAM MAP