19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
At 18º C, the conductance of H+ and CH3COO– at infinite dilution are 315 and 35 mho cn2 eq–1 respectively. The equivalent conductivity of CH3 COOH at infinite dilution is…..mho cm2 eq–1 [CBSE AIPMT 2010]
Assertion (A) On dilution, the equivalent as well as molar conductivity of solution increases. Reason (R) With dilution, the number of current carrying particles per cm3 increases. [AIIMS 2010]
Which of the following expressions correctly represents the equivalent conductance at infinite dilution of Al2(SO4)3, Given that o Al and o SO are the equivalent conductance at infinite dilution of the respective …
Standard electrode potential of cell is (EºAg+/Ag = 0.80V)
If the salt bridge is removed suddenly from a working cell, the voltage
Which one of the following is not a function of a salt bridge?
Standard solution of KNO3 is used to make salt bridge because
Which of the following has been universally accepted as a reference electrode at all temperatures and has been assigned a value of zero volts?
The electrochemical cell stops working after some time because
Which one of the following statements is incorrect regarding an electrochemical cell?
Galvanic cell is a device in which
What is the cell reaction occurring in Daniell cell (Galvanic cell)? (a) Cu s ZnSO aq CuSO aq Zn s -> (b) Zn s CuSO aq Cu s ZnSO -> (c) Ni s ZnSO aq NiSO s Zn s -> (d) 2Na s CdSO aq Na SO aq…
Which cell converts electrical energy into chemical energy?
Cr O 14H 6e 2Cr 7H O; -> E 1.33V. At [Cr O ]l 4.5 millimoles, [Cr3+] = 15 millimoles, E is 1.067 V. The pH of the solution is nearly equal to [KCET 2016]
Standard electrode potential for Sn4+/Sn2+ couple is +0.15 V and that for the Cr3+/Cr couple is –0.74V. These two couples in their standard state are connected to make a cell. The cell potential will be: [AIPMT 2011]
For the reduction of silver ions with copper metal, the standard cell potential was found to be +0.46 V at 25ºC. The value of standard Gibbs energy, ∆Gº will be (F = 96500 C mol–1) [CBSE AIPMT 2010]
How many coulombs are required to deposit 50 g of aluminium when the electrode reaction is Al 3e Al -> [RPMT 2010]
KMnO4 is manufactured on a large scale by (a)fusing MnO2 with KOH and then oxidizing the fused mixture with KNO3
Which of the following compounds is green in colour ?
Which of the following oxides of chromium is amphoteric in nature ?
The transition metals sometimes form nonstoichiometric compounds. These compounds have (a) definite structures and definite proportions
The transition elements are
Which of the following ions is expected to the coloured in solution ?
Which of the following electronic configurations represents Fe3+ ?
Which of the following does not possess unpaired electrons ?