How many corners of $SiO_4$ units are shared in the formation of three-dimensional silicates?

The three lines given by the combined equation $y^3 - 4x^2y = 0$ represent:

If the work done in blowing a bubble of volume $V$ is $W$,then the work done in blowing the bubble of volume $2V$ from the same soap solution will be

The temperature of a body on the Kelvin scale is found to be $x \ K$. When it is measured by a Fahrenheit thermometer,it is found to be $x \ ^\circ F$. The value of $x$ is:

The maximum and minimum melting points of the first and second transition series elements,respectively,are obtained with:

The lungs are covered by which of the following?