JEE MAIN 2023 ONLINE 1ST FEBRUARY EVENING SHIFT
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The correct order of bond enthalpy (\(\mathrm{kJ~mol^{-1}}\)) is :
In an amplitude modulation, a modulating signal having amplitude of X Volt is superimposed with a carrier signal of amplitude Y Volt in first case. Then, in second case, the same modulating signal is superimposed with different carrier signal of amplitude 2Y Volt. The ratio of modulation index in the two cases respectively will be :
Let the plane P pass through the intersection of the planes \(2x+3y-z=2\) and \(x+2y+3z=6\), and be perpendicular to the plane \(2x+y-z+1=0\). If d is the distance of P from the point (\(-\)7, 1, 1), then \(\mathrm{d^{2}}\) is equal to :
In figure, a straight line is given for Freundrich Adsorption (\(y=3x+2.505\)). The value of \(\frac{1}{n}\) and \(\log \mathrm{K}\) are respectively.

A Carnot engine operating between two reservoirs has efficiency \(\frac{1}{3}\). When the temperature of cold reservoir raised by x, its efficiency decreases to \(\frac{1}{6}\). The value of x, if the temperature of hot reservoir is \(99^\circ\)C, will be :
Which of the following statements is a tautology?