Recently Active Questions

what is remainder when 111111 ......123 times 1 is divided by 271 ...

Q1) GIVE STRUCT. OF S2O3 ????????? (NOTE : no negative 2- charge of compound) ...

sorry posting almost when day is over :P 1)Calculate the concentrations of the non-ionised acid of the ions in a 0.1 M formic acid at equilibrium. ( Ka =1.7* 10^-4) 2)A certain weak acid has Ka=10^-4 Calculate the equilibrium ...

Ques1) The dissociation const of HCN is 5 x 10 -10 . The pH of the soln prepared by mixing 1.5 moles of HCN and 0.15 moles of KCN in water and making up the total volume to 0.5 dm3 is (a) 8.302 (b) 7.303 (c) 10.302 (d)9.302 Q ...

I learnt this Arihant Differential Calculus book. Please explain how ths has been derived or formulated. 1) If ax2 + bx + c > 0, for all x belonging to R a > 0 and D < 0 2) If ax2 + bx + c > 0, for all x belonging ...

1) The benzyl cation in C6H5CH=CH-COOH is:- (a) Linearly placed w.r.t benzene ring and carboxyl group (b) Triangular shaped (c) Tetrahedral in shape (d) At 90 ° to the plane of benzene ring 2) The dipole moment of vinyl chlo ...

*Image* Figure shows a smooth track a part of which is a circle of radius R. A block of mass m is pushed against a spring constant k fixed at the left end and is then released.Find the initial compression of the spring so tha ...

Nitrogen fluoride is more stable than any of Nitrogen chloride and Nitrogen iodide. The last two are unstable and explosive. Why is this so ? ...

is it necessary to study inversion of organic compounds and oblique collisions ...

We have 12 Coins. One of them (we dont know which one?) has different weight from the others. With three time scaling (the scale has two pans) find the differrent coin. source:mathlinks ...

A 2kg is slid along the frictionless floor with initial transverse velocity(10m/s)along k axis.Describe the motion(a) in car's frame.(b) in ground frame. What are cold welded joints(regarding friction)? Three forces are actin ...

if 3 continuous and differentiable functions a(x),b(x),c(x) are inserted b/w ex and f(x) , then sequence becomes a GP.If g(x),k(x),l(x) are 3 continuous and differentiable function inserted b/w them ,then sequence is AP.It is ...

Passage *Image* When g(x) and h(x) will be solved by someone..I will post the remaining questions of this passage Sorry Nishant sir ,if u think this question doesnt deserve to be QOD ...

Passage: Curve f(x)=a(x-1)5+b(x-1)4 has 2 identical critical points . b is the constant number satisfying inequality b+1 >b 2 .Also limit lim [ 5ymax-b5 - 25.mod(b) ] b→0 sin5b 25.a2.sinb exists and is equal to L Q1 if u ...

Please explain why nitride of Lithium is more stable than nitride of Potassium. ...

find the no of roots of: sin2 πx= log x ...

sin({x}{y})=cos({x}{y}) ...

Find the condition such that the line px+qy=r intersects ellipse x2/a2 + y2/b2 =1 in points whose eccentric angles differ by π/4 ...

Q1) when a dielectric slab is inserted between the plates of a parallel plate capacitor the energy of the system decreases.What can be said about the force on the slab exertd by the feild? Q2) A positive charge of 2*10^-8 cou ...

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*Image* WICH IS MORE ACIDIC? AND Y??????? ...

find the possible number of ordered triads (m,n,p) where 1≤m≤100 1≤n≤50 1≤p≤25 and (2^m )+(2^n)+(2^p) is divisible by 3........ ...

For what real values of 'a' and 'b' all the maximum of the function f(x)= (5a2/3x3) + 2ax2 - 9x +b are positive and maximum is at point x0=-5/9?? ...

0∫1 tan-1 (1 – x+ x2) dx ...

8. Pure phosphine is not combustible while impure phosphine is combustible, this combustibility is due to the presence of _______ A. P2H4 B. N2 C. PH5 D. P2O5 9. Hydrolysis of NCl3 indicates A. N- --- Cl+ polatrity B. N+ --- ...

PLEASE FIND THE MODULAS AND AMPLITUDE OF ii where i = -1 ...

y=(x-[x])[x] 0∫3 y.dx = ??? ...

what is the hybridization of Ti in (NH4)2[TiCl6]? i'm getting a very strange answer... d5s [3] plz try it out... ...

*Image* bLOCK a OF MASS M is released from rest.No friction anywhere..It undergoes 2 completely inelastic collisions.,first with the plane and then with a block of B mass 2m. and sticks to it.A total of 21J mechanical energy ...

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