Which of the following oxides is strongly basic?

$A$ space $2.5 \ cm$ wide between two large plane surfaces is filled with oil. The force required to drag a very thin plate of area $0.5 \ m^2$ just midway between the surfaces at a speed of $0.5 \ m/s$ is $1 \ N$. The coefficient of viscosity in $kg/(m \cdot s)$ is:

Which of the following reagents can form a hydrazone with alkanone?

$A$ patient who excretes a large quantity of sodium in urine has:

What is the formula of Carborundum?

In which of the following compounds is the oxidation state of iodine fractional?