Planaria possesses high capacity of

$25 \ mL$ of $3.0 \ M \ HNO_3$ are mixed with $75 \ mL$ of $4.0 \ M \ HNO_3$. If the volumes are additive,the molarity of the final mixture would be $......... \ M$.

Which fibrous mineral substance can withstand red-hot temperatures without being damaged?

The longest distance of the point $(a, 0)$ from the curve $2 x^2+y^2=2 x$ is

If $t_n$ denotes the number of triangles formed with $n$ points in a plane,no three of which are collinear,and if $t_{n+1}-t_n=36$,then $n$ is equal to

The oxidation state and covalency of $Al$ in $[AlCl(H_2O)_5]^{2+}$ are respectively