From which of the following can a milk-like substance be prepared?

What type of circulatory system is present in humans?

The figure shows a system of logic gates. From the study of the truth table,it can be found that to produce a high output $(1)$ at $R$,we must have

$A$ ray of light is incident along a line which meets another line,$7x - y + 1 = 0$,at the point $(0, 1)$. The ray is then reflected from this point along the line $y + 2x = 1$. Find the equation of the line of incidence of the ray of light.

Among the following compounds,which one is not responsible for the depletion of the ozone layer?

The number of radial nodes of $3s$ and $2p$ orbitals are respectively