Maths-
General
Easy
Question
Let 
be the equation of an ellipse in the xy-plane. A and B are two points whose position vectors are 
then the position vector of a point P on the ellipse such that 
is
The correct answer is:
Let 
lies on the ellipse Now from the diagram, according to given conditions, AP=AB
solving (i) and (ii) we get x =0 and y =
Hence point P has position vector
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A 0.200 M KOH solutions is electrolyzed for 1.5 h using a current of 8.00 A How many moles of O2 were produced at the anode?
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Conductors allow the passage of electric current through them Metallic and electrolytic are the two types of conductors Current carriers in metallic and electrolytic conductors are free electrons and free ions respectively Specific conductance of conductivity of the electrolyte solution is given by the following relation :
where, M and N are the molarity and normality of the solution respectively. Molar conductance of storage electrolyte depends on concentration : 
where, 
molar conductance at infinite dilution
c= concentration of the solution b= constant
The degrees of dissociation of weak electrolytes are calculated as: 
For which of the following electrolytic solution 
and 
are equal ?
Conductors allow the passage of electric current through them Metallic and electrolytic are the two types of conductors Current carriers in metallic and electrolytic conductors are free electrons and free ions respectively Specific conductance of conductivity of the electrolyte solution is given by the following relation :
where, M and N are the molarity and normality of the solution respectively. Molar conductance of storage electrolyte depends on concentration : where, molar conductance at infinite dilution
c= concentration of the solution b= constant
The degrees of dissociation of weak electrolytes are calculated as:
For which of the following electrolytic solution and are equal ?
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A Galvanic cell consists of three compartments as shown in figure The first compartment contains ZnSO4 (1M) and III compartment contains CuSO4 (1M) The mid compartment contain NaNO3(M) Each compartment contains 1L solution:
The concentration of 
ion in III compartment after discharge of 0.1 F charge will be :
A Galvanic cell consists of three compartments as shown in figure The first compartment contains ZnSO4 (1M) and III compartment contains CuSO4 (1M) The mid compartment contain NaNO3(M) Each compartment contains 1L solution:
The concentration of ion in III compartment after discharge of 0.1 F charge will be :
chemistry-General
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A Galvanic cell consists of three compartments as shown in figure The first compartment contains ZnSO4 (1M) and III compartment contains CuSO4 (1M) The mid compartment contain NaNO3(M) Each compartment contains 1L solution:
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The concentration of in mid compartment after discharge of 0.1F of charge will be:
chemistry-General
