Chemistry-
General
Easy
Question
The pesticide DDT slowly changes to
- CCl3-CHO and chlorobenzene
- p, p’-Dichlorodiphenylethene
- p, p’ – Dichlorodiphenyldichloroethane
- p, p’-Dichlorodiphenyldichloroethane
The correct answer is: p, p’-Dichlorodiphenyldichloroethane
Related Questions to study
chemistry-
The colour of the above complex is
The colour of the above complex is
chemistry-General
chemistry-
The oxidation state of copper in the above complex is
The oxidation state of copper in the above complex is
chemistry-General
chemistry-
The above complex is obtained by
The above complex is obtained by
chemistry-General
physics-
System shown in figure is released from rest. Pulley and spring are massless and friction is absent every where. The speed of 5 kg block when 2 kg block leaves the contact with ground is [k=40 N/ 
and 
]
System shown in figure is released from rest. Pulley and spring are massless and friction is absent every where. The speed of 5 kg block when 2 kg block leaves the contact with ground is [k=40 N/ and ]
physics-General
physics-
A perfectly elastic ball 
of mass m moving with velocity 
collides elastically with three exactly similar balls 
lying on a smooth table as shown. Velocities of the four balls after the collision are
A perfectly elastic ball of mass m moving with velocity collides elastically with three exactly similar balls lying on a smooth table as shown. Velocities of the four balls after the collision are
physics-General
physics-
A particle moves from P to Q in a path as shown, along the perimeter of the circle of radius R. If the time taken by the particle from P to Q through 
is equal to T, the average angular speed over the time T is
A particle moves from P to Q in a path as shown, along the perimeter of the circle of radius R. If the time taken by the particle from P to Q through is equal to T, the average angular speed over the time T is
physics-General
physics-
Starting from rest a wheel rotates with uniform angular acceleration 
. After 4s, if the angular acceleration ceases to act, its angular displacement in the next 4 s is
Starting from rest a wheel rotates with uniform angular acceleration . After 4s, if the angular acceleration ceases to act, its angular displacement in the next 4 s is
physics-General
physics-
A car is moving with a speed of 
on a circular path of radius 500 m. If its speed is increasing at the rate of 
, the net acceleration of the car is
A car is moving with a speed of on a circular path of radius 500 m. If its speed is increasing at the rate of , the net acceleration of the car is
physics-General
physics-
The angular velocity of second's hand in a wall clock is : (in 
)
The angular velocity of second's hand in a wall clock is : (in )
physics-General
physics-
A particle initially at rest starts moving from point A on the surface of a fixed smooth hemisphere of radius 
as shown. The particle looses its contact with hemisphere at point B. C is centre of the hemisphere. The equation relating 
and 
is
A particle initially at rest starts moving from point A on the surface of a fixed smooth hemisphere of radius as shown. The particle looses its contact with hemisphere at point B. C is centre of the hemisphere. The equation relating and is
physics-General
physics-
A block of mass 2 kg is released from rest on rough surface as shown in figure. Find the work done on the block by
A) gravity
B) force of friction when the block is displaced downwards by 2 m ? 
A block of mass 2 kg is released from rest on rough surface as shown in figure. Find the work done on the block by
A) gravity
B) force of friction when the block is displaced downwards by 2 m ?
physics-General
physics-
A small block slides with velocity 
on the horizontal frictionless surface as shown in fig. The block leaves the surface at point C. The angle 
in the fig is :
A small block slides with velocity on the horizontal frictionless surface as shown in fig. The block leaves the surface at point C. The angle in the fig is :
physics-General
physics-
Block A has a weight of 300 N and block 'B' has a weight of 50 N. Determine the distance 'B' mu raise from rest before. "A" obtains a speed of 
. Neglect the mass of cord and pulleys?
Block A has a weight of 300 N and block 'B' has a weight of 50 N. Determine the distance 'B' mu raise from rest before. "A" obtains a speed of . Neglect the mass of cord and pulleys?
physics-General
physics-
In the ideal pulley-particle system shown, the mass 
is connected with a vertical spring of spring constant 
. If the mass is released from rest when the spring is undeformed, find the maximum compression of the spring.
In the ideal pulley-particle system shown, the mass is connected with a vertical spring of spring constant . If the mass is released from rest when the spring is undeformed, find the maximum compression of the spring.
physics-General
physics-
One end of a spring of natural length ' h ' and spring constant ' k ' is fixed at the ground and the other is fitted with a smooth ring a mass ' m ' which is allowed to slide, on a horizontal rod fixed at a height ' h ' as shown in figure. Initially the spring makes an angle of 37° with the vertical when the system is released from rest. Find the speed of the ring when the spring becomes vertical? 
One end of a spring of natural length ' h ' and spring constant ' k ' is fixed at the ground and the other is fitted with a smooth ring a mass ' m ' which is allowed to slide, on a horizontal rod fixed at a height ' h ' as shown in figure. Initially the spring makes an angle of 37° with the vertical when the system is released from rest. Find the speed of the ring when the spring becomes vertical?
physics-General
