Chemistry-
General
Easy

Question

The structure of the major product formed in the following reaction is

  1.    
  2.  
  3.    

The correct answer is:  

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Three solid spheres of mass and radius R are shown in the figure. The M.I. of the system about XX’ axis will be:

Three solid spheres of mass and radius R are shown in the figure. The M.I. of the system about XX’ axis will be:

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Angular velocity of a wheel is 2 rad/sec. Number of turns travelled by the wheel in 5 sec. will be:

Angular velocity of a wheel is 2 rad/sec. Number of turns travelled by the wheel in 5 sec. will be:

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A wheel of mass 10 kg has a moment of inertia of 160 kg-m2 about its own axis. The radius go gyration is :

A wheel of mass 10 kg has a moment of inertia of 160 kg-m2 about its own axis. The radius go gyration is :

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A wheel of radius 20 cm has force applied to it as shown in the figure. The torque produced by the forces 4N at A, 8N at B, 6N at C, 9N at D at angles indicated is :

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Assertion : A reference frame attached to earth is an inertial frame of reference.
Reason : The reference frame which has zero acceleation is called non inertial frame of reference.

Assertion : A reference frame attached to earth is an inertial frame of reference.
Reason : The reference frame which has zero acceleation is called non inertial frame of reference.

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Assertion : Mass is a measrure of inertia of the body in linear motion.
Reason : Greater the mass, greater is the force required to change its state of rest or of uniform motion.

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Reason : Greater the mass, greater is the force required to change its state of rest or of uniform motion.

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A body of mass m rests on horizontal surface. The coefficient of friction between the body and the surface is µ. If the mass is pulled by a force P as shown in the figure, the limiting friction between body and surface will be :

A body of mass m rests on horizontal surface. The coefficient of friction between the body and the surface is µ. If the mass is pulled by a force P as shown in the figure, the limiting friction between body and surface will be :

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A motorcycle is travelling on a curved track of radius 500 m. If the coefficient of friction between road and tyres is 0.5, the speed avoiding skidding will be :

A motorcycle is travelling on a curved track of radius 500 m. If the coefficient of friction between road and tyres is 0.5, the speed avoiding skidding will be :

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The coefficient of static friction, µs , between block A of mass 2 kg and the table as shown in the figure is 0.2. What would be the maximum mass value of block B so that the two blocks do not move? The string and the pulley are assumed to be smooth and massless. (g = 10 m/s2)

The coefficient of static friction, µs , between block A of mass 2 kg and the table as shown in the figure is 0.2. What would be the maximum mass value of block B so that the two blocks do not move? The string and the pulley are assumed to be smooth and massless. (g = 10 m/s2)

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The force–time (F – t) curve of a particle executing linear motion is as shown in the figure. The momentum acquired by the particle in time interval from zero to 8 second will be :

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In the figure given below, the position–time graph of a particle of mass 0.1 kg is shown. The impulse at t = 2 sec is

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A block B is placed on block A. The mass of block B is less than the mass of block A. Friction exists between the blocks, whereas the ground on which the block A is placed is taken to be smooth. A horizontal force F, increasing linearly with time begins to act on B. The acceleration aA and aB of blocks A and B respectively are plotted against t. The correctly plotted graph is:

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A false balance has equal arms. An object weigh X when placed in one pan and Y when placed in other pan, then the weight W of the object is equal to :

A false balance has equal arms. An object weigh X when placed in one pan and Y when placed in other pan, then the weight W of the object is equal to :

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Two masses of 5kg and 10 kg are connected to a pulley as shown. What will be the acceleration of the system (g = acceleration due to gravity) :

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