IIT JEE 2007 PAPER 1 OFFLINE
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While the piston is at a distance 2L from the top, the hole at the top is sealed. The piston is then released, to a position where it can stay in equilibrium. In this condition, the distance of the piston from the top is :
The total number of moles of chlorine gas evolved is :
Let \(\alpha,\beta\) be the roots of the equation \(x^2-px+r=0\) and \(\frac{\alpha}{2},2\beta\) be the roots of the equation \(x^2-qx+r=0\). Then the value of r is
Two particles of mass m each are tied at the ends of a light string of length 2a. The whole system is kept on a frictionless horizontal surface with the string held tight so that each mass is at a distance 'a' form the centre P (as shown in the figure). Now, the mid-point of the string is pulled vertically upwards with a small but constant force F. As a result, the particles move towards each other on the surface. The magnitude of acceleration, with the separation between them becomes 2x, is

If the cathode is a Hg electrode, the maximum weight (g) of amalgam formed from this solution is:
The sum V\(_1\) + V\(_2\) + ... + V\(_n\) is