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The increasing order of the ionic radii of the given isoelectronic species is :

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A body of mass m = 3.513 kg is moving along the x-axis with a speed of $5.00ms_{−1}$. The magnitude of its momentum is recorded as

The function $f(x)=tan_{−1}(sinx+cosx)$is an increasing function in

Consider a rubber ball freely falling from a height h = 4.9 m onto a horizontal elastic plate. Assume that the duration of collision is negligible and the collision with the plate is totally elastic. Then the velocity as a function of time the height as function of time will be

In contect with the transition elements, which of the following statements is incorrect ?

For real x, let $f(x)=x_{3}+5x+1$, then

Toluene is nitrated and the resulting product is reduct is reduced with tin and hydrochloric acid. The product so obtained is diazotised and then with cuprous bromide. The reaction mixture so formed contains

The shortest distance between the line $yx=1$ and the curve $x=y_{2}$ is(A) $832 $(B) $823 $(C) $532 $ (D) $43 $

A charge Q is placed at each of the opposite corners of a square. A charge q is placed at each of the other two corners. If the net electrical force on Q is zero, then the Q/q equals