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Specify the coordination geometry around and hybridisation of N and B atoms in a 1:1 complex of BF3 and NH3 (a)N:tetrahedral,sp3;B:tetrahedral,sp3 (b)N:pyramindal,sp3;B:pyramindal,sp3 (c)N:pyramindal,sp3;B:planar,sp2 (d)N:pyr ...

Amongst the C-X bond ,the correct bond energy order is - (a)C-Cl>C-Br>C-I (b)C-I>C-Cl>C-Br (c)C-Br>C-Cl>C-I (d)C-I>C-Br>C-Cl ...

pleaseeee i wanted the date of each tests my id :giridharg1@gmail.com ...

1 gm of dry green algae absorbs 4.7 x 10 to the power -3 mole of CO2 per hour by photosynthesis as starch,how long would it take for the algae to double their own weight????? ...

Prove that : Any prime number of the form (4k+1) can be expressed as the sum of two perfect squares. [k∈I] ...

Q1 Identify the least stable ion amongst the following-(a)Li-(b)Be-(c)B-(D)C- ...

If φ(N) is the number of integers which are less than N and prime to it and if x is prime to N then show that xφ(N)-1≡0.mod(N) ...

In five throws with single die what is the chance of throwing a) three aces exactly b) three aces atleast ...

Show that ax+a and ax-a are always even whatever a and x may be I did it by taking four cases for a and x [EE,EO,OE,OO] where E and O denote even and odd respectively Is any shorter method available ? ...

If p is prime ,and x is prime to p,show that xpr-pr-1-1 is divisible by pr ...

which is more strong?? covalent bond or electrovalent bond Give reasons also. ...

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f(x+1) ≥ f(x) + 1 f(x+5) ≤ f(x) + 5 g(x) = f(x) + 1 - x find g(2008) ...

well watz sumation of n harmonic terms suppose 1/a 1/a+b 1/a+2b ..........1/a+<n-1>b ie for n terms . wat is sumation.>>>>>>>furmula<<<<<< ...

Find the angle? sin(sin-110) ...

For an ideal binary solution with PA0> PB0,then which relation between XA and YA is correct a) XA=YA b)XA >YA c)XA < YA d)XA/XB<YA/YB ...

*Image* In the arrangement shown in the figure, the appreciable friction exisits b/w the wedge and body m. The friction coeff being equals to @.The masses of pulley and thread are negligible. Show that the acc of body m relat ...

Ok here r a few ques i found quite tricky...well at least to me they were tricky..and hence i cud not solve them:)so pls do me a favour and solve them for me. 1)Solve |2x-1/x-1|>2 2)Solve |x/x-1|+|x|=x2/|x-1| 3)solve (x+3) ...

Why does a spacecraft follow a series of elongated elliptical orbits before setting itself towards the orbits of the moon or other planets? ...

If p and q are any two positive integers ,show that (pq)! is divisible by (p!)q.q! and by (q!)p.p! ...

*Image* A block of mas m rests on a bracket of mass M. The coeff of friction b/w the block and bracket are @s and @k. The bracket rests on a frictionless surface. Show that the max force F that can be applied if the block is ...

1) Let f(x) = x3+x2+100x+7sinx then show that the eqn 1 / [y-f(!)] + 2 / [y-f(2)] + 3 / [y-f(3)] = 0 has exactly one root lying in (f(1) , f(2)). 2) Let f(x) and g(x) be two functions which cuts each other orthogonally. At th ...

*Image* A block of mas m rests on a bracket of mass M. The coeff of friction b/w the block and bracket are @s and @k. The bracket rests on a frictionless surface. Show that the max force F that can be applied if the block is ...

Find general solution of congurence 98x-1≡0(mod 139) ...

Show that a12-b12 is divisible by 91 if a and b are both prime to 91 ...

hie ppl..cant u help me out wid dis...for IIT jeee thermodynamics do we need the 1st chapter of HCVERMA part 2.....reply as soon as spoosible..!!! ...

Under thermodynamic control what would be major product *Image* ...

If p is a prime number and a is prime to p,and if a square number c2 can be found such that c2-a is divisible by p, then show that a(p-1)/2-1 is divisible by p ...

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which is stabler a)aryrl carbocation b)vinyl cabocation For the aryl carbocation , there are 2 reso structure posible for it and there even no hyperconjugation for vinyl carbocation.So aryl must be stabler But in the most rec ...