Chemistry-
General
Easy
Question
In which of the following cells net cell reaction is: 
The correct answer is:
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A lead shot of diameter 1mm falls through a long column of glycerin The variation of the velocity ‘v’ with distance covered (s) is represented by
A lead shot of diameter 1mm falls through a long column of glycerin The variation of the velocity ‘v’ with distance covered (s) is represented by
Physics-General
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The graph shows the change ' 
' in the length of a thin uniform wire used by the application of force ‘F’ at different temperatures T1 and T2 The variation suggests that
The graph shows the change ' ' in the length of a thin uniform wire used by the application of force ‘F’ at different temperatures T1 and T2 The variation suggests that
Physics-General
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The load versus extension graph for four wires of same material is shown. The thinnest wire is represented by the line
The load versus extension graph for four wires of same material is shown. The thinnest wire is represented by the line
Physics-General
Physics-
In given figure, a wire loop has been bent so that it has three segments: segment ab (a quarter circle), bc (a square corner), and ca (straight). Here are three choices for a magnetic field through the loop:
Where 
is in milliteslas and t is in seconds. If the induced current in the loop due to 
and 
are 
respectively then
In given figure, a wire loop has been bent so that it has three segments: segment ab (a quarter circle), bc (a square corner), and ca (straight). Here are three choices for a magnetic field through the loop:
Where is in milliteslas and t is in seconds. If the induced current in the loop due to and are respectively then
Physics-General
Physics-
Two parallel plates of infinite dimensions are uniformly charged. The surface charge density on one is 
will on the other is 
,field intensity at point C will be-
Two parallel plates of infinite dimensions are uniformly charged. The surface charge density on one is will on the other is ,field intensity at point C will be-
Physics-General
Physics-
A hemisphere (radius R) is placed in electric field as shown in fig. Total outgoing flux is -
A hemisphere (radius R) is placed in electric field as shown in fig. Total outgoing flux is -
Physics-General
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A plank with a uniform sphere placed on it, rests on a smooth horizontal plane. Plank is pulled to right by a constant force F. If the sphere does not slip over the plank.
A plank with a uniform sphere placed on it, rests on a smooth horizontal plane. Plank is pulled to right by a constant force F. If the sphere does not slip over the plank.
Physics-General
Physics-
A yo-yo is resting on a rough horizontal table. Forces F1 , F2 and F3 are applied separately as shown. The correct statement is
A yo-yo is resting on a rough horizontal table. Forces F1 , F2 and F3 are applied separately as shown. The correct statement is
Physics-General
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A thin rod of mass M and length L is struck at one end by a ball of clay of mass m, moving with speed v as shown in figure. The ball sticks to the rod. After the collision, the angular momentum of the clay-rod system about A, the midpoint of the rod, is
A thin rod of mass M and length L is struck at one end by a ball of clay of mass m, moving with speed v as shown in figure. The ball sticks to the rod. After the collision, the angular momentum of the clay-rod system about A, the midpoint of the rod, is
Physics-General
Physics-
A uniform rod of mass M is hinged at its upper end. A particle of mass m moving horizontally strikes the rod at its mid point elastically. If the particle comes to rest after collision find the value of M/m =?
A uniform rod of mass M is hinged at its upper end. A particle of mass m moving horizontally strikes the rod at its mid point elastically. If the particle comes to rest after collision find the value of M/m =?
Physics-General
Physics-
A uniform rod AB of length L and mass M is lying on a smooth table. A small particle of mass m strike the rod with a velocity v0 at point C a distance x from the centre O. The particle comes to rest after collision. The value of x, so that point A of the rod remains stationary just after collision, is :
A uniform rod AB of length L and mass M is lying on a smooth table. A small particle of mass m strike the rod with a velocity v0 at point C a distance x from the centre O. The particle comes to rest after collision. The value of x, so that point A of the rod remains stationary just after collision, is :
Physics-General
Physics-
A uniform rod AB of length L and mass M is lying on a smooth table. A small particle of mass m strike the rod with a velocity v0 at point C at a distance x from the centre O. The particle comes to rest after collision. The value of x, so that point A of the rod remains ststionary just after collision is:
A uniform rod AB of length L and mass M is lying on a smooth table. A small particle of mass m strike the rod with a velocity v0 at point C at a distance x from the centre O. The particle comes to rest after collision. The value of x, so that point A of the rod remains ststionary just after collision is:
Physics-General
Physics-
A ball of mass m moving with velocity v, collide with the wall elastically as shown in the figure. After impact the change in angular momentum about P is:
A ball of mass m moving with velocity v, collide with the wall elastically as shown in the figure. After impact the change in angular momentum about P is:
Physics-General
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A thin uniform straight rod of mass 2 kg and length 1 m is free to rotate about its upper end when at rest. It receives an impulsive blow of 10 Ns at its lowest point, normal to its length as shown in figure. The kinetic energy of rod just after impact is
A thin uniform straight rod of mass 2 kg and length 1 m is free to rotate about its upper end when at rest. It receives an impulsive blow of 10 Ns at its lowest point, normal to its length as shown in figure. The kinetic energy of rod just after impact is
Physics-General
Physics-
Two equal masses each of mass M are joined by a massless rod of length L. Now an impulse MV is given to the mass M making an angle of 30° with the length of the rod. The angular veloctiy of the rod just after imparting the impulse is
Two equal masses each of mass M are joined by a massless rod of length L. Now an impulse MV is given to the mass M making an angle of 30° with the length of the rod. The angular veloctiy of the rod just after imparting the impulse is
Physics-General
