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1. *Image* 2. Let Points P,Q correspond to the complex numbers a,b in the complex plane. If |a| = 4 and 4a2-2ab+b2 = 0 , then the area of the triangle OPQ, (O = Origin) is : ...

*Image* ...

Can someone tell me how to Find the equivalent Molar Mass for disproportionation reactions? Eg. H3PO2→PH3 + H3PO4 ...

1.) 1L solution containing NH4Cl and NH4OH has OH- concentration 10-6 moles/litre. Which of the following can be precipitated when solution is added to 1L soution of 0.1M metal ions? 1.Ba(OH)2(Ksp=5x10-3) 2.Ni(OH)2(Ksp=1.6x10 ...

Three rods of identical cross-sectional area and made from the same metal form the sides of an isosceles triangle ABC, right angeled at B. The points A and B are maintained at temperatures T and (√2)T respectively. In stead ...

Let z=a(cos π/5 + isin π/5), a∈r, | a | ≤1. Then z2010 +z2011............. equals? a) z2010/1-a b) a2010/1-a c) za2010/1-z d) a2010/1-z ...

A uniform rod of length 27 m is rotating through one end through a fixed axis perpendicular to rod.ratio of angular and linear momentum? Options: 3,9,18,27 My answer is 9 but correct one is 18 which comes if we take MV=MWL/2 ...

The sum of roots of the equation x + 1 - 2 log2 (2x + 3) + 2 log4 (10 - 2-x) = 0 is a) log211 b) log212 c) log213 d) log214 ...

Q)In which of these compounds in there no hydrogen bonding? K2HPO4 K2HPO3 KH2PO3 CH3COOH What is the procedure for getting the answers? The structures of these compounds i have not come across in my study so is there any othe ...

plz give some short method for the following type quest. . Q1 - find the sum of all the numbers greater then 10000 formed with digits 0,2,4,6,8. no digit being repeated. Q 2 -whats the ans for this : how many numbers are divi ...

For the dissociation reaction N2O4→2NO2 the degree of dissociation α in terms of Kp and total equilibrium pressure P.. ...

\hspace{-16}$Calculate $\mathbf{\int_{0}^{1}x^{2012}.(x^2-1)^5dx}$ ...

1.. *Image* 2.. *Image* ...

for a liquid normal boiling point is 351 K statement: at 351 K and 2 atm pressure , change in gibbs energy ΔG is positive. true or false? and why ...

The oxoanions of which element(in its highest oxidation state) shows least tendency to polymerise? A)B B)Cl C)S D)P doubts : on what factors does tendency to polymerize depend on?? ...

The oxoanions of which element(in its highest oxidation state) shows least tendency to polymerise? A)B B)Cl C)S D)P doubts : on what factors does tendency to polymerize depend on?? ...

1. The no. of tangents to the curve y = cos(x+y) , |x| ≤ 2Π, that are parallel to the line x+2y=0 is ? 2. If 2008θ=Π, and 2 .\sum_{r=1}^{r=n} \sin(r\theta)\cos(r^2\theta) is an INTEGER , then find the least integral n ? ...

Find solution set of logx2 . log2x2 =log4x2 ...

'a' and 'b' are integers. Solve 2(a2-b)=b2-a ...

In presence of external magnetic field d-orbitals are a)3-fold degenerate b)5-fold degenerate c)7-fold degenerate d)non-degenerate e)none of these answer in the key was (d) or (e) ..(i don't remember!!!) why is the answer not ...

The molal lowering of vapour pressure of a liquid is 1.008 mm Hg at 25oC in a very dilute solution containing non volatile solute.The vapour pressure of the liquid at 25oC is 'A'x10 mm Hg.The value of 'A' is...... [ Integer t ...

∫03 (x2+1)d([x]). [.]→ G.I.F. ...

if a particle covers half of distance with 30m/s. Then what should be the velocity of particle at other half distance,so that its average velocity will be 60m/s. ...

multi correct A neutron collides head on with a stationary hydrogen atom in ground state.Which of the following are correct( take mass of neutron ≈ hydrogen) A) if kinetic energy of neutron is less than 13.6 eV , collision ...

1. ARRANGE IN INCREASING LATTICE ENERGY LiCO3 , Na2CO3 , K2CO3 2. COMPOUND WITH HIGH LATTICE ENERGY : LiF OR LiBr (reasons also plz) ...

1. If nitrogen gas molecule goes straight up with its rms speed at 0°c from the surface of the earth and there are no collisions with other molecules, then it will rise to an approx. height of (a) 8 km (b) 12 km (c) 12 m (d) ...

Let f(x)=x (| x- π|) (2 + cos2x), x∈R. Then the function f: R→R is A) one - one but not onto B) onto but not one one C) both one-one and onto D) neither one one nor onto ...

Let f(x)=x (| x- π|) (2 + cos2x), x∈R. Then the function f: R→R is A) one - one but not onto B) onto but not one one C) both one-one and onto D) neither one one nor onto ...

i'm talking about the problem 8.5 (page 264) it is asked to find the species which do not show dispropotionation among ClO-,ClO2-,ClO3-,ClO4- . And also write reactions.... first Q is easy ....but how to write the reactions ? ...

at 300K vapour pres. of pure benzene and pure tolune are 100mm and 30mm of Hg rep. also they form ideal soln.a soln. of benzene and tol. is prep. by mixin 3 mole of tolun in 2 moles of benz. at 300K. 1)at wht external pressur ...