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Prove 2<e<3 ... ...

Q. Correct order of bond length is (a) CO>CO+ (b) NO+ > NO (c) N2>N2+ (d) O2+>O2 ans: (a) ...

Why is Finkelstien reaction not reversible? ...

if I(n)=\int \frac{x^{n}}{(ax^{2}+bx+c)^{1/2}} dx n belongs to N find I(n+1) in terms of I(n) and I(n-1) ...

Prove that 2 is algebraic (For extreme beginners :D) Also prove that 2 + 3 is algebraic ...

let x and y be two numbers chosen at random from set {1,2,3......n}with replacement.let Qn(p) denote probability that (xp-1 -yp-1) is divisible by p then find Qn(p) in terms of p and n and find Q25(3) ...

Q1. [] represents the GINT. Then the value of the infinite series [ 2008/2 ] + [ 2009/4 ] + [ 2011/8 ] + [ 2015/16 ] + [ 2023/32 ] + ...... is? I need a short method for this.. All i could do was calculate tr = [ 2007+2r-1/2r ...

A student performs an experiment to determine they Young's modulus of a wire,exactly 2m long,by Searle's method.In a particular reading,the student measures the extension in the length of the wire to be 0.8 mm with an uncerta ...

whats the order of basic nature of the compounds NF3,PF3,AsF3,SbF3,BiF3 ? And why ? ...

single choice correct Q1 WHich pair can form alloy ? a)Zn,Pb b)Fe,Hg c)Fe,C d)C,Pt Q2 consider [Ag(NH3)2]+,[Ag(CN)2]-,[Ag(S2O3)2]3- Which of the following are true abt these ?? a)Ag+ acts as lewis base b)hybd of Ag+ is sp2 c) ...

Let f(x) = [3+4Sinx] (where [] denotes greatest integer). Then, find the sum of all the values of "x" in [Ï€ ,2Ï€] where f(x) fails to be differenciable..... Answer : 12Ï€ ...

Q1 which is not covalent a)CO2 b)SiO2 c)BaO d)CsNO3 Q2 In SiO2 what is coordination no. of Si and O ?? Q3 **deleted ** Q4 The [1 1 1] plane is parallel to which plane in 3D space ? Q5 Find miller indices of plane with interce ...

Ques1) Find the solution of dy/ dx = (x+y) 2 /(x+2) (y-2) Ques2) Find the solution of dy/dx = (x-1) 2 + (y-2) 2 tan -1 ( y-2/x-1 )/(xy - 2x - y+2) tan -1 ( y-2/x-1 ) ...

these are ques to which i dont have answers Write the all possible names of following compounds 1)K3[Co(NO2)6] a)Fischer salt b)potassium cobaltnitrite c)potassium hexanitrocobaltate(III) d)potassium cobalt nitrite 2)Na2[Fe(C ...

*Image* *Image* If A − B = 0, then what is the sum of all the possible values of x? OPTIONS 1) - 20/3 2) - 9/7 3) 0 4) 1 5) None of these ...

Q1 Let S denote the set of all values of a for which 4^{x^2}+2(2a+1)2^{x^2}+4a^2-3>0 is satisfied for all reals.. I am getting ans as (-∞,-1) but ans is diff Q2 The number of integral solns of x(\frac{5-x}{x+1})(x+\frac{ ...

The following curve is obtained when molar conductivity (â‹€m) is plotted against the square root of concentration for two electrolytes A and B. *Image* then ,correct answers are (a) B is a strong electrolyte and A is a weak ...

T/F Q1 Lithium is st. reducing agent among alkali metals Q2 BeF2 has highest MP among flourides of 2nd gp.\ more than one correct Q3 ionic oxides having NCl type strucutre and 6:6 cooridnation ar ?? a)SrO b)CaO c)BeO d)MgO Is ...

Complexes in which two metals of different oxidation state are close together are frequently highly coloured.Why? ...

Hey guys , this maths musing problem (of MTG December issue ) is really great , please give it a try ---- NOT FOR THE GREAT SIRS Find the last digit of the sum of the roots of the eqn. ( 1/2 x - 1 )2009 = -1 , and also try th ...

Multiple answers correct. Select out the correct Statement(s) - *Image* ...

1) An Alcohol , on oxidation produces a ketone with the same number of carbon atoms. When the Ketones is oxidized, it yields am acid with a fewer no. of carbon atoms. The alcohol could be:- (a) Primary alcohol (b) Secondary a ...

This one was once asked (2yrs ago) by one of my friends.... Prove that among 39 sequential natural numbers there always is a number with the sum of its digits divisible by 11..... ...

mod (vector a) =a & mod(vector b ) =b ..................then prove that {(vector a)/a^2 - (vector b)/b^2}^2 = {( vector a - vector b)/ab}^2 ...

*Image* ...

an element adopts a cubical crystal structure in which only 68% ocupied.Edge length is 288 pm.If density of element is 7.2 g/cm3 ,the number of atoms in 144g of element ??? Volume=2.4*10^(-23) cc ...

∫ dx/x+√x2-x+1 ...

2MnO-4 + 5 H2O2 + 6H+ ---> 2Mn2+ + 8H2O + 5O2 Which of the following r not true ? A) H2O2 is oxidised to O2 B) H+ IS OXIDIZED TO WATER C)Oxdn no. of Mn changes by 6 D) H2O2 is reduced by H2O ...

sin4x+cos15x=1 tried this way.... => cos15x=1-sin4x => cos15x=(1+sin2x)(1-sin2x)=cos2x(1+sin2x)=cos2x(2-cos2x) => cos15x=2cos2x-cos4x koi chota soln hai kya kisi ke paas ?? ...

sin(ex).cos(ex)=2x-2+22-x ans is given inf soln....par mujhe lagta hai no soln becoz RHS≥2 and LHS≤0.5 ...