Chemistry-
General
Easy
Question
The accompanying figure depicts the change in concentration of species X and Y for the reaction X→Y as a function of time the point of intersection of the two curves represents,
- Data insufficient to predict
The correct answer is:
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Calculate the order of the reaction in A and B :
Calculate the order of the reaction in A and B :
chemistry-General
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For a hypothetical reaction ;A+B
C the following data was obtained in three different experiments:
Suggest rate law :
For a hypothetical reaction ;A+BC the following data was obtained in three different experiments:
Suggest rate law :
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Select the law that corresponds to data shown for the following reaction 
Select the law that corresponds to data shown for the following reaction
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Select the rate low that corresponds to the data shown for the following reaction A+BC
Select the rate low that corresponds to the data shown for the following reaction A+BC
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An impulse J is applied on a ring of mass m along a line passing through its centre O and parallel to horizontal surface. The ring is paced on a rough horizontal surface. The linear velocity of centre of ring when it starts rolling without slipping is
An impulse J is applied on a ring of mass m along a line passing through its centre O and parallel to horizontal surface. The ring is paced on a rough horizontal surface. The linear velocity of centre of ring when it starts rolling without slipping is
physics-General
physics-
Two springs, of force constants
, are connected to a mass 
as shown. The frequency of the mass is 
. If both are made four times their original values, the frequency of oscillation becomes
Two springs, of force constants, are connected to a mass as shown. The frequency of the mass is . If both are made four times their original values, the frequency of oscillation becomes
physics-General
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The variation of velocity of particle moving along a straight line is shown in the figure The distance travelled by the particle in
The variation of velocity of particle moving along a straight line is shown in the figure The distance travelled by the particle in
physics-General
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The velocity-time graph of a stone thrown vertically upward with an initial velocity of 1 -30ms is shown in the figure The velocity in the upward direction is taken as positive and that in the downward direction as negative What is the maximum height to which the stone rises?
The velocity-time graph of a stone thrown vertically upward with an initial velocity of 1 -30ms is shown in the figure The velocity in the upward direction is taken as positive and that in the downward direction as negative What is the maximum height to which the stone rises?
physics-General
physics-
The velocity time graph of a body moving in a straight line is shown in the figure The displacement and distance travelled by the body in 6 sec are respectively (in metres) .
The velocity time graph of a body moving in a straight line is shown in the figure The displacement and distance travelled by the body in 6 sec are respectively (in metres) .
physics-General
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An elevator is going up The variation in the velocity of the elevator is as given in the graph What is the height to which the elevator takes the passengers
An elevator is going up The variation in the velocity of the elevator is as given in the graph What is the height to which the elevator takes the passengers
physics-General
chemistry-
Compounds (A) and (B) are -
Compounds (A) and (B) are -
chemistry-General
physics-
Two springs of force constant 
and 
are connected to a mass as shown below. The frequency of oscillation of the mass is
Two springs of force constant and are connected to a mass as shown below. The frequency of oscillation of the mass is
physics-General
physics-
For a particle executing SHM the displacement 
is given by 
Identify the graph which represents the variation of potential energy (PE) as a function of time and displacement
.
For a particle executing SHM the displacement is given by Identify the graph which represents the variation of potential energy (PE) as a function of time and displacement.
physics-General
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A mass is suspended by means of two coiled spring which have the same length in unstretched condition as in figure. Their force constant are 
and 
respectively. When set into vertical vibrations, the period will be
A mass is suspended by means of two coiled spring which have the same length in unstretched condition as in figure. Their force constant are and respectively. When set into vertical vibrations, the period will be
physics-General
physics-
The bob of a simple pendulum is displaced from its equilibrium position 
to a position 
which is at height 
above and the bob is then released. Assuming the mass of the bob to be and time period of oscillations to be 
the tension in the string when the bob passes through is
The bob of a simple pendulum is displaced from its equilibrium position to a position which is at height above and the bob is then released. Assuming the mass of the bob to be and time period of oscillations to be the tension in the string when the bob passes through is
physics-General
