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Doubt 1- can a rxn be neithr endothermic nor exothermic????? Doubt 2- Wats the difference between ionisation and dissociation??? Doubt 3- We know that K=cα2/(1-α), and we also know that a ...

f:R->[0,infinity) is such dat f(x-1)+f(x+1)=√3 f(x) then find the period of f(x). do we really have a method to find it, my sir told me to do it by hit and trial !! and it was a MSQ but i m nt givn da opt ...

An open can of oil is accidently dropped into a lake; assume the oil spreads over the surface as a circular disc of uniform thickness whose radius increases uniformly at the rate of 10cm/sec. At the moment the radius is 1m th ...

Someone walks into your room and dumps a huge bag of coins all over the floor so that no coins are on top of any other .A robot then comes into the room and is programmed such that if it sees a head, it flips it to tails. if ...

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Two parabolas y2=4a (x-lambda1) and x2=4a (x-lambda2) always touch each other(lambda1,lambda2 being variable parametres). then their point of contact lies on a ...

The angle between tangent drawn from the point (3,4) to the parabola y2 -2y+4x=0 is ...

*Image* What will happen to the basisity of the compound with increase in n ? ...

how to calculate workdone by friction for one cyclic process. does this work done does not depends on the internal energy of the system ...

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When u differentiate a curve, d differential tells d slope of tangent rite???? wel wat if it is a cubic equation and when we diff. it we get a quadratic, but a quadratic eqn. is not a straight line and it cant ...

The rate constant of a first order reaction depends on a)concentration of reaction b)concentration of product c)time d)temperature ...

*Image* Find the current through 1 ohm resistor : ...

What i like best about this site is that there is desk. It is in my opinion the best feature. I like the periodic table a lot also :) ...

if z is a complex no lyin in d foruth qudrnt of d argnd plane and mod (kz/(k+1) +2i) > 2 for all eal values of k (k=!-1) then d range of arg(z) is ...

The pH of an aqueous solution of Ca(OH)2 is 12. If the Ksp of Ca(OH)2is 9*10-6, then the concentration of Ca2+ ions in the solution in mol L-1 is___? ...

If you can solve this question, I dont think you should worry too much about this chapter on a whole. This is probably everything in capacitance. *Image* There are two smooth dielectric slabs of mass m. And dielectric constan ...

If alpha, beta are the roots of x2+px+q=0 and also of x2n + pnxn + qn = 0 and if α/β, β/α are the roots of xn + 1 + (x+1)n = 0 , then prove that n must be an even integer. ...

why the temp of liquid will fall during evaporation of the liquid??? actually ,,, is it all true that the temp will fall ??? ...

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Passengers having seat numbers from 1 to 100 are to be seated in a flight. There are 100 seats only in the plane and the passengers enter the plane according to their seat numbers (passenger having seat number 1 enters 1st an ...

What is levelling effect of water??? ...

What is the probability of a chord in a circle to be of length less than D/2 where D is the diameter? ...

Kindly explain the concept of dissociation of polyprotic acids. ...

This is a very standard problem. Many of you must have solved this one. This is not for those of you who get the 99.5%ile+ in FIITJEE Mathematics tests ;) But for many other mortals who fear things. Pls try to solve this. It ...

Can anyone tell me that is there any rule to replace several springs connected (in series or in parallel) having diff. spring const. to a single spring........ *Image* *Image* ...

two small identical discs, each of mass mlie on a smooth horizontal plane. The discs are interconnected by a light non deformed spring of length l and stiffness x. At a certain moment one of the discs is setin motionin a hori ...

Prove that the segment of the normal to the curve x=2asint+asintcos2t; y=-acos3t contained between the coordinate axis is equal to 2a!!!!!!!!!!!!!! ...

There is a factory of gold in which there are 4 machine each machine produce 100 gm gold coin. one day suddenly due to technical prob. in machine one machine start making coin of 90 gm instead of 100 gm PROBABLITY OF finding ...

A thin rod of length L and mass M is bent at its midpoint into two halves so that the angle between them is 90o. The moment of inertia of the bent rod about an axis passing through the bending point and perpendicular to the p ...