Which of the following is the strongest conjugate base?

Who proposed the three-domain system of classification?

Which one of the following reactions does not form a gaseous product?

$A$ long straight wire carrying a current of $30 ~A$ is placed in an external uniform magnetic field of induction $4 \times 10^{-4} ~T$. The magnetic field is acting parallel to the direction of current. The magnitude of the resultant magnetic induction in tesla at a point $2.0 ~cm$ away from the wire is
$\left(\mu_0=4 \pi \times 10^{-7} ~H/m\right)$

Which is the best method for the conservation of wild relatives of plants?

The plant body is differentiated into which of the following parts?