# The molar conductance at infinite dilution of aluminium sulphate is 858ohm-1cm2mol-1. Given the molar ionic conductance of sulphate ions as 160ohm-1cm2mol-1 ,the molar ionic conductance of Al3+ ion is

1.  378 ohm-1cm2mol-1

2.  189 ohm-1cm2mol-1

3.  698 ohm-1cm2mol-1

4.  349 ohm-1cm2mol-1

4

189 ohm-1cm2mol-1

Explanation :
No Explanation available for this question

# When an aqueous solution of sulphuric acid is electrolysed, the ion discharged at the anode is

1.  Hydrogen

2.  Hydroxyl

3.  Sulphate

4.  Oxygen

4

Hydroxyl

Explanation :
No Explanation available for this question

# The standard electrode potentials, E0 for the half cell reactions are as Zn→Zn2++2e-,E0=0.76V,Fe→Fe2++2e-,Eo=0.41V,the EMF of the cell reaction Fe2++Zn →Zn2++ Fe is

1.  -0.35 V

2.  +0.35 V

3.  +1.17 V

4.  -1.17 V

4

+0.35 V

Explanation :
No Explanation available for this question

# In a galvanic cell, which one of the following statement is not correct

1.  Anode is negatively charged

2.  Cathode is positively charges

3.  Reduction takes place at the anode

4.  Reduction takes place at the cathode

4

Reduction takes place at the anode

Explanation :
No Explanation available for this question

# Which of the following compounds is the most easily reduced

1.  ZnO

2.  H2O

3.  Fe2O3

4.  Ag2O

4

Ag2O

Explanation :
No Explanation available for this question

# Resistance of a conductivity cell filled with a solution of an electrolyte of concentration 0.1M is 100Ω. The conductivity of this solution is 1.29Sm-1. Resistance of the same cell filled with 0.2M of the same solution is 520Ω. The molar conductivity of 0.02M solution of the electrolyte will be

1.  1240x10-4Sm2mol-1

2.  1.24x10-4Sm2mol-1

3.  12.4x10-4Sm2mol-1

4.  124x10-4Sm2mol-1

4

124x10-4Sm2mol-1

Explanation :
No Explanation available for this question

# If ∧c for NH4OH is 11.5Ω-1cm2mol-1,its degree of dissociation would be (given that λoNH=73.4 and λoOH-=197.6Ω-1cm2mol-1)

1.  0.0848

2.  0.0424

3.  0.0212

4.  0.004

4

0.0424

Explanation :
No Explanation available for this question

1.  MnO4-can be used in aqueous HCl

2.  Cr2O72- can be used in aqueous HCl

3.  MnO4-can be used in aqueous H2SO4

4.  Cr2O72-can be used in aqueous H2SO4

4

MnO4-can be used in aqueous HCl

Explanation :
No Explanation available for this question

# Strong electrolytes are those which

2.  Conduct electricity

3.  Dissociate into ions at high dilution

4.  Completely dissociate into ions at all dilutions

4

Explanation :
No Explanation available for this question

# Iodin and bromine are added to a solution containing I-and Br-ions. What reaction would occur if the concentration of each species was 1M [E0(I-)=0.54V,E0(Br2,Br+)=1.08V]

1.  2Br-+I2→2Br2+2I-

2.  I2+Br2→2I-+2Br+

3.  2Br-+2I-→I2+Br2

4.  Br2+2I-→2Br-+I2

4