Recently Active Questions

prove that e^{x}+\sqrt{1+e^{2x}}>(1+x)+\sqrt{2+2x+x^{2}} for x belongs to R(note its ≥ not >) ...

Q1 A_x=\begin{bmatrix} a_{11}+x & a_{12}+x & a_{13}+x\\ a_{21}+x & a_{22}+x &a_{23}+x \\ a_{31}+x & a_{32}+x & a_{33}+x \end{bmatrix} Prove A_x=A(0)+x\sum_{k=1}^{3}{\sum_{l=1}^{3}{A_{lk}}} Q2 If a,b>0 and a3+b3=a-b,then pr ...

1)LET C1 and C2be two parabola x2=y-1 and y2=x-1.let p be any point on c1 and Q be any pont on C2. P' and Q' are the reflection of P and Q respectively w.r.t y=x line then proove: !)Prove PQ>min(PP',QQ') 2)hence determine ...

Does anyone have sufficient material about Back bonding online? What is all this pπ-pπ and dπ-dπ?? ...

1] Salt having least solubility in Water BaCl2 BaNO3 MgSO4 BaSO4 2] Lowest enthalpy of Fusion F2 H2 Cl2 Helium 3] Strongest P-O bond is found in F3PO Cl3PO Br3PO (CH3)3PO 4] Arrange increasing Solubility of Na2SO4 BeSO4 MgSO4 ...

A 4:1 molar mixture of the end CH4 is contained in the vessel at 20 bar pressure. Due to a hole in the vessel the gas mixture leak out. what is the composition of the mixture effising out initially ? ...

20% N2O4 molecules are dissociated in a sample of gas at 27° C and 760mm of Hg. Calculate the density of the equilibrium mixture ? ...

*Image* the cell is ideal. what is th PD across the capacitor?? pleaxe xplain. ...

Phenol reacts with acetone in the presence of hydrochloric acid. Predict the product...... Is diphenyl derivative obtained? ...

*Image* each side has R resi. this sys. will last till infinite series ? ...

Ex=0 and Ey=k y in a 2dimensional plane map the electric field lines. ...

*Image* what is the current flowing in G? PD across 5F capacitor.... PD across 4F capacitor... ...

The OH group of methyl alcohol cannot be replaced by chlorine by the action of (a) Cl 2 (b) H Cl (c)P Cl 3 (d) P Cl 5 ...

Which statement is/are correct about free radical halogenation of alkanes :- 1) The number of product molecules formed by one photon is very high 2) If O2 is added, initially the rate decreases then it increases. 3) Inhibitor ...

1 mole each of Bromo-Derivative (A) and NH3 react to give 1 mole of an organic compound (B). B reacts with Methyl Iodide (CH3I) to give (C). Both B & C react with Nitrous acid to give D & E respy. D is oxidised and subsequent ...

Why the lowest oxide of transition metals is basic,whereas the highest is amphoteric/acidic?? ...

If t1, t2, t3,...tn are the roots of the equation - xn +px + q =0 , then (t1- t2)(t1- t3)(t1- t4) ... (t1- tn) = ? (a) n.p (b) n.t1n +p (c) n.t1n-1 +p (d) n.t1 +p ...

Paper 2 Let x1,x2,....,xn be a sequence of integers such that -1 ≤ xi ≤ 2 for all i belongs to {1,2,...n} ; x1 +x2 + x3 + ....+ xn = 19 x12+x22 +...+xn2 = 99 Let m,M be the least and greatest values of x13 + x23 +...+xn3 ...

In nitroprusside ion, the iron & NO exists as Fe(2) & NO+ rather than Fe(3) & NO.These forms can be differentiated by- a)estimating the conc. Of iron b)measuring the conc. Of CN- c)measuring the solid state magnetic moment d) ...

Is the momentum of a closed system of particles remains constant in an inertial reference frame or not ????? Is the momentum conservation law holds only in inertial frames ?????? Well there is a reason for posting such a simp ...

arrange in inc order of acidity: [Na(H20)6]+ [Sc(H20)6]3+ [Fe(H20)6]3+ [Mn(H20)6]2+ [Ni(H20)6]2+ ...

Consider a planet whose mass and radius is half of the earth,and the surface temperature is abt 800K,Can we predict whether oxygen is in the planet's atmosphere ...

Q1 Boiling CuCl2 with excess copper turnings and conc HCl gives ?? Q2 Cu2+ is more stable than Cu+ due to ?? Q3 CuSO4 + lime = ?? Q4 Yellow mercuric oxide is obtained by? Q5 The iron salt used in blue prints is ?? ...

Assume that the day began 10-12 hrs late.. i forgot to post the question today! here it is in a hurrry.. i modified a question of irodov.. Dont have a final solution .. but the fearless and the conceptful should give it a sho ...

If three normals are drawn from pt. (p,0) to parabola y2=x then p > 2a where a=1/4. True or false. and reason ?? ...

There are 2 irreducible polynomials f and g with rational coeff.Now let there be 2 complex numbers a and b s.t. f (a) = g (b) = 0. Prove that if a+b is rational number, then f and g must have same deg. ...

*Image* The acceleration a of the supporting surface required to keep the centre G of the circular cylinder in a fixed position during the motion if there is no slipping between the cylinder and the support will be :_________ ...

Can anyone please tell me what is a common normal between 2 curves and most important : How does a common normal between two parabolas look like ???? ...

Can anyone please tell me what is a common normal between 2 curves and most important : How does a common normal between two parabolas look like ???? ...

Suppose we have a rotating horizontal disc . A man stands at the edge of the disc. We say that the net moment of inertia of the system is MR2/2 + mR2 where M is the mass of the disc and m is of the man. Then my statement is T ...