The organization of living organisms starts with which level?

Two concentric hollow spherical shells have radii $r$ and $R$ $(R \gg r)$. $A$ charge $Q$ is distributed on them such that the surface charge densities are equal. The electric potential at the centre is

When acetaldehyde is reacted with $LiAlH_4$,what is the product formed?

The amount of copper metal deposited at the cathode on passing an electric current of $500 \, mA$ for $20 \, minutes$ in a cupric chloride solution is ............ $g$.

$Neophron$ (vulture) and $Locusta$ (locust) show similarities with respect to the presence of

Where is the very rich museum located in Gujarat?