In the case of small cuts,bleeding is stopped by applying potash alum. Here alum acts as

Which kingdom is characterized by the presence of a rigid cell wall and the formation of an embryo?

Which one feature is common to leech,cockroach,and scorpion?

$A$ star initially has $10^{40}$ deuterons. It produces energy via the processes:
${}_1H^2 + {}_1H^2 \to {}_1H^3 + p$
${}_1H^2 + {}_1H^3 \to {}_2He^4 + n$
The masses of the nuclei are as follows: $M(H^2) = 2.014 \, amu$,$M(p) = 1.007 \, amu$,$M(n) = 1.008 \, amu$,$M(He^4) = 4.001 \, amu$. If the average power radiated by the star is $10^{16} \, W$,the deuteron supply of the star is exhausted in a time of the order of:

If $p \Rightarrow (q \vee r)$ is false,then the truth values of $p, q, r$ are respectively:

The currents $i_1$ and $i_2$ through the resistors $R_1(=10\,\Omega)$ and $R_2(=30\,\Omega)$ in the circuit diagram with $E_1 = 3\,V$,$E_2 = 3\,V$,and $E_3 = 2\,V$ are respectively: