A uniform rod AB of mass m and length at rest on a smooth horizontal surface. An impulse P is applied to the end B. The time taken by the rod to turn through a right angle is :-

A thin rod of length 4, mass 4m is bent at the points as shown in the fig. What is the moment of inertia of the rod about the axis passing point O & perpendicular to the plane of the paper

A smooth tube of certain mass is rotated in gravity free space and released. The two balls shown in the figure move towards ends of the tube. For the whole system which of the following quantity is not conserved :-

A solid sphere is rolling on a frictionless surface, shown in figure with a translational velocity v m/s. If it is to climb the inclined surface then v should be:

A rod hinged at one end is released from the horizontal position as shown in the figure. When it becomes vertical its lower half separates without exerting any reaction at the breaking point. Then the maximum angle ' ' q made by the hinged upper half with the vertical is

A disc of mass M and radius R rolls on a horizontal surface and then rolls up an inclined plane as shown in the figure. If the velocity of the disc is v, the height to which the disc will rise will be :–

The reaction of with HBr gives

The line parallel to the x-axis and passing through the intersection of the lines  where  is

In this question, we have to find the lines where it lies and what’s its distance from x-axis. If u=ax1+by1+c1=0 and v=ax2+by2+c2=0 are two intersecting lines, then the equation u + kv =0 represents a family of lines. Remember the family of lines

Distance between the two parallel lines and is

When propionic acid is treated with aqueous sodium bicarbonate  is liberated. The ‘C’ of  CO₂ comes from

The following compound is used as

 In the reaction, product P is

The compound X in the reaction
 is

The major organic product formed from the following reaction

  The compound (X) is

The product of acid hydrolysis of P and Q can be distinguished by