Lenz's law is a consequence of the law of conservation of:

Sporeine was developed in

Peptidoglycan is present in:

$A$ fire hydrant delivers water of density $\rho$ at a volume rate $L$. The water travels vertically upward through the hydrant and then makes a $90^o$ turn to emerge horizontally at speed $V$. The pipe and nozzle have a uniform cross-section throughout. The force exerted by the water on the corner of the hydrant is

Which of the following pairs will not produce dihydrogen gas?

The number of divisors of $n = 38808$ (excluding $1$ and $n$) is