Redox Reactions & Electrochemistry (KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Chemistry): Questions 1 - 4 of 31

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Question number: 1

» Redox Reactions & Electrochemistry » Kohlrausch's Law and Its Applications

Appeared in Year: 2014

MCQ▾

Question

If the molar conductivities C in 5 5cm2mol1 of NaCl, KCl and NaOH at infinite dilution are 126, 150 and 250, respectively, the molar conductivity of KOH (in Scm2mol1 )

Choices

Choice (4) Response

a.

274

b.

526

c.

26

d.

226

Question number: 2

» Redox Reactions & Electrochemistry » Specific and Molar Conductivities

Appeared in Year: 2015

MCQ▾

Question

The molar conductivities of HCl,NaCl,CH3COOHandCH3COONa at infinite dilution follow the order-

Choices

Choice (4) Response

a.

HCl>NaCl>CH3COOH>CH3COONa

b.

CH3COONa>HCl>NaCl>CH3COOH

c.

CH3COOH>CH3COONa>HCl>NaCl

d.

HCl>CH3COOH>NaCl>CH3COONa

Question number: 3

» Redox Reactions & Electrochemistry » Electrode Potentials

Appeared in Year: 2015

MCQ▾

Question

The standard reduction potentials (in v) of a few metal ion/metal electrodes are given below.

Cr3Cr=0.74;Cu2Cu=+0.34;Pb2Pb=0.13;AgAg=+0.8 . The reducing strength of the metals follows the order.

Choices

Choice (4) Response

a.

Cr>Pb>Cu>Ag

b.

Pb>Cr>Ag>Cu

c.

Ag>Cu>Pb>Cr

d.

Cr>Ag>Cu>Pb

Question number: 4

» Redox Reactions & Electrochemistry » Oxidation Number

Appeared in Year: 2014

MCQ▾

Question

The metal with highest oxidation state present in K2CrO4 , NbCl5 and MnO2 is

Choices

Choice (4) Response

a.

Mn

b.

Nb

c.

K

d.

Cr

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