Haversian canals are found in

If $x$ is real,then the minimum value of $y = \frac{x^2-x+1}{x^2+x+1}$ is

$C_6H_6 + 3O_3$ $\longrightarrow X \stackrel{Zn / H_2O}{}$ ${\longrightarrow} Y$; $X$ and $Y$ are respectively

What will be the phase difference between virtual voltage and virtual current,when the current in the circuit is wattless (in $^o$)?

Ectophloic siphonostele is found in ...........

$A$ conducting wire frame is placed in a magnetic field which is directed into the paper. The magnetic field is increasing at a constant rate. The directions of induced current in wires $AB$ and $CD$ are