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Fructose reduces Tollen's reagent due to:
A particle moves a distance x in time t according to equation x = (t + 5)⁻¹. The acceleration of the particle is proportional to:
Two cars P and Q start from a point at the same time in a straight line and their positions are represented by $x_P(t) = at + bt^2$ and $x_Q(t) = ft - t^2$. At what time do the cars have the same velocity?
The distance travelled by a particle starting from rest and moving with an acceleration 4/3 ms⁻², in the third second is
A particle covers half of its total distance with speed v₁ and the rest half distance with speed v₂. Its average speed during the complete journey is
A lift is going up. The total mass of the lift and the passenger is 1500 kg. The variation in the speed of the lift is as given in the graph. The height to which the lift takes the passenger is
The motion of a particle along a straight line is described by the equation x = 8 + 12t - t³, where x is in metre and t is in second. The retardation of the particle when its velocity becomes zero is:
A ball is dropped from a high rise platform at t = 0 starting from rest. After 6 s another ball is thrown downwards from the same platform with a speed v. The two balls meet at t = 18 s. What is the value of v? (take g = 10 ms⁻²)
A particle starts its motion from rest under the action of a constant force. If the distance covered in first 10 s is s₁ and that covered in the first 20 s is s₂, then
Which of the following links amino acids together in a protein?
If the velocity of a particle is $v = At + Bt^2$, where $A$ and $B$ are constants, then the distance travelled by it between 1 s and 2 s is:
A bus is moving at a speed of 10 ms⁻¹ on a straight road. A scooterist wishes to overtake the bus in 100 s. If the bus is at a distance of 1 km from the scooterist, with what speed should the scooterist chase the bus?
A particle shows the distance-time curve as given in this figure. The maximum instantaneous velocity of the particle is around the point:
A person travelling in a straight line moves with a constant velocity v₁ for a certain distance x and with a constant velocity v₂ for the next equal distance. The average velocity v is given by the relation:
A full wave rectifier circuit consists of two p-n junction diodes, a centre-tapped transformer, capacitor and a load resistance. Which of these components remove the ac ripple from the rectified output?
If a ball is thrown vertically upwards with speed $u$, the distance covered during the last $t$ seconds of its ascent is
The x-t graph shown in figure represents
The potential energy of a long spring when stretched by $2 \text{ cm}$ is $U$. If the spring is stretched by $8 \text{ cm}$, potential energy stored in it will be
A ball is thrown vertically upwards. Which of the following graph/graphs represent velocity-time graph of the ball during its flight (air resistance is neglected)
A compound that can form a zwitterion is: