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1. Mn2+ +2H2O *Image* MnO2 +4H++2e- E0= -1.23 MnO4- +4H++3e- *Image* MnO2+2H2O E0=+1.70 Select correct statement[s]: a.Mn2+ reacts with MnO4- in acid solution to form MnO2 b.Mn(MnO4)2 is stable in acid soln. c.MnO2 di ...
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1.the radius of the circle whose centre is[-4,0] and which cuts the parabola y2=8x at A and B such that its common chord AB subtends a right angle at the vertex of the parabola is equal to a.4 b.3 c. 18 d.5 2.a normal is draw ...
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infinite number of straight wires each carrying current i are equally placed as shown in the fig. adjacent wires have curent in opposite direction. net magnetic field at point p is *Image* a. μi ln2/4π 3 a k b. μi ln4/4π ...
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1.Determine the magnetic field at the centre of the current carrying wire arrangement shown in the figure. the arrangement extends to infinity. the wires joining the successive squares are along the line passing through the c ...
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if the point [3,4] lies on the locus of the point of intersection of the lines xcos(α)+ysin(α)=a and xsin(α)-ycos(α)=b, (α is variable), the point (a,b) lies on the line 3x-4y=0 then 9a4+16b4+34 is equal to ...
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evaluate *Image* answer given is π2. ...
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{} is fractional func [] is GIF | |is mod *Image* 5. ∫(0 to x)ex-[x]d{x} 6. ∫(0 to 4){ x }dx 7.∫(-5 to 5)min({x+1},{x-1})dx ...
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consider the integrals *Image* let I be the greatest among them. prove that I=I4 ...
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∫ dx/cosx + cosec x ∫ 3cot3x - cotx/tanx - 3tan3x ∫tan{x -k}tan{x+k}tan2x ...
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in order to increase the resistance of a given wire of uniform cross section to 4 times it's value, a fraction of it's length is stretched uniformly till the full length of the wire becomes 3/2 times the original length.what ...
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{Shastras Q-21} a point charge q is brought from infinity and is placed at the center of a conducting neutral spherical shell of inner radius 'a' and outer radius 'b', then work done by external agent is. A}0 B}kq2/2b C}kq2/2 ...
