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Q-1 A swimmer is trying to cross a river. The total time taken by him doesn't depend upon : (a) viscosity of river water (b) speed of river water (c) his speed (w.r.t. river water) (d) width of the river Q-2 It is found that ...
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Can some of you guys who have given their bits exam share some info about it ......like which topics in chem phy and maths had more questions...for eg. i have been told by some of my friends that in chem physical chem was mor ...
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How do we differentiate between the compounds containing SO32- and SO42- anions? in all books i've seen ,both the anions ( SO32- and SO42-) have same tests and both give same products. ...
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evaluate the limit: \lim_{x\rightarrow \propto } \frac{x^{2}(1+sin^{2}x)}{(x+sinx)^{2}} ...
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the conditions for a good leaving group are given as 1. It should polarize the bond which connects it to the carbon so that the carbon has some positive charge, making it more reactive towards the nucleophile; i.e., it should ...
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find the solution set for z given that, |z+a| + |z-a| = |a| where a = real number ...
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2007 IIT-JEE question Q- A spherical portion has been removed from non-conducting solid sphere having charge uniformly distributed in its volume as shown in the figure.The electric field inside the emptied space is (A) zero e ...
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which one of the following contains the most acidic hydrogen and why? *Image* ...
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Figure below shows six concentric conducting spheres A,B,C,D,E and F with radii R,2R,3R,4R,5R and 6R respectively.Conducting spheres B and C & D and E are connected using conducting wires as shown in figure.Find the equivalen ...
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Ques- Find all complex numbers 'z' which satisfy: 4z^{2} + 8\left|z \right|^{2}=8 Ques- Find all complex numbers 'z' which satisfy z3 = conjugate of 'z' ...
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which of the following two are chiral molecules. mark all the asymmetric carbons in both. 1. *Image* 2. *Image* ...
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Chlorination of methane involves two kinds of steps: one initiation step and two propagation steps. but while calculating the enthalpy of the whole chlorination of methane , only the enthalpies of two propagation steps are ad ...
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can somebody explain me how are these redistributions in the capacitors done for eg *Image* is redistributed as *Image* similar redistribution is done when dielectrics are made in series. what is the concept behind this redis ...
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Q- how many coulombs of charge is present on 1-g N-3 ion ? ...
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Q1 Define and differentiate between the two terms below: Standard reduction/oxidation potential & Discharge potential Q2 Corrosion is an example of electrolysis but any electrolysis reaction requires a minimum E.M.F. across t ...
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How do we find out whether a particular compound is better oxidising/reducing agent in alkaline or acidic medium? for eg , SO2 is more powerful reducing agent in an alkaline medium than in acidic medium. how do we know this ? ...
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Q1 A solid sphere has a very small cavity at its center (volume of cavity→0).This cavity contains a source of electric field which varies as E(x) = k/x5 + k'/x3 (where 'x' = radial distance from the center & k,k' are positi ...
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Q-1 A point charge q is located a distance d from an infinite plane. Determine the electric flux through the plane due to the point charge. Q-2 A point charge q is located a very small distance from the center of a very large ...
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balance the reactions: (i) SO2 + Na2CrO4 + H2SO4 → Na2SO4 + Cr2(SO4)3 +H2O (ii) C2H5OH + I2 + OH- → CHI3 + HCO2- + H2O + I- I am facing the same problem in both the reactions for eg taking (i) reaction step I S4+ → S6+ ...
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what is the oxidation state and no. of unpaired electrons of Fe in [Fe(H2O)5NO]SO4 the answer for oxidation state is given +1 and no. of unpaired electrons is given 3 how can these both be simultaneously true no of unpaired e ...
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Sum to 'n' terms 1/(1 - x)(1 - x3) + x2/(1 - x3)(1 - x5) + x4/(1 - x5)(1 - x7) + .......... also find Sum if 'n' = ∞ , given that |x|<1 ...
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Let S_{n} = \sum_{1}^{n}{\frac{n}{n^{2}+kn+k^{2}}} and T_{n} = \sum_{1}^{n-1}{\frac{n}{n^{2}+kn+k^{2}}} for n=1,2,3.......then, (A) Sn < Π/3√3 (B) Sn > Π/3√3 (C) Tn < Π/3√3 (D) Tn > Π/3√3 plz somebody ...
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ques- solve for θ: tan2θ.tanθ = 1 i found two ways of solving this but both of them are giving different answers I - by using tan2θ = 2tanθ/1-tan2θ and solving for tanθ ,i got tanθ = ± 1/√3 ie θ = nΠ± Π/6 II - ...
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If cos(A-B)=1/2 and sin(A+B)=1/2 ,find the smallest positive values of A and B and also their most general values . ...
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can anyone plz explain me why electron gain enthalpy denoted by reacton: X + e- → X- of all elements is mostly negative in value.This means that X- is more stable than X for most elements .How? plz explain. ...
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When the moon is setting at any given place ,the angle that is subtended at its center by the radius of earth passing through the given place is 57' If the earth's radius be 6400 km ,find approximately the distance of the moo ...
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A ball swings in a vertical circle at the end of a rope 1.5 m long. when the ball is 36.9° past the lowest point on its way up, its total acceleration is =( -22.5 i + 20.2 j).at that instant find the magnitude of radial acce ...
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find the period of following function: f(x+\lambda ) = 1 + \sqrt{2f(x) - f^{2}(x)} i have a doubt in answer ...
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A function f(x) is a polynomial function in sin-1x ( ie f(x) = a(sin-1x )n + b(sin-1x )n-1 + c(sin-1x )n-2..........+ k) the conditions given on f(x) are: 1. f(x) is an onto function. 2. f o f o f o f o f o f o...........o f ...
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what is meant by positive and negative phase in an orbital *Image* the blue part in the figure is known as positive phase and orange part is known as negative phase.What do these signify with respect to struture?? do these ph ...
