1
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
In electrolysis of NaCl when Pt electrode is taken then H2 is liberated at cathode while with Hg cathode it forms sodium amalgam
A
Hg is more inert than Pt
B
More voltage is required to reduce H+ at Hg than at Pt
C
Na is dissolved in Hg while it does not dissolve in Pt
D
Conc. of H+ ions is larger when Pt electrode is taken.
2
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Standard electrode potentials are
Fe2+/Fe [Eo = $$-$$0.44] and
Fe3+/Fe2+[ Eo = 0.77];
If Fe2+, Fe3+ and Fe blocks are kept together, then
A
Fe3+ increases
B
Fe3+ decreases
C
Fe2+/Fe3+ remains unchanged
D
Fe2+ decreases.
3
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
Cell reaction is spontaneous when
A
$$\Delta $$Go is negative
B
$$\Delta $$Go is positive
C
$$\Delta $$Eored is positive
D
$$\Delta $$Eored is negative
4
AIPMT 2000
MCQ (Single Correct Answer)
+4
-1
Equivalent conductances of Ba2+ and Cl$$-$$ ions are 127 and 76 ohm$$-$$1 cm$$-$$1 eq$$-$$1 respectively. Equivalent conductance of BaCl2 at infinite dilution is
A
139.5
B
101.5
C
203
D
279
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