The numbers $a_n = 6^n - 5n$ for $n = 1, 2, 3, \ldots$ when divided by $25$ leave the remainder:

Which of the following noble gases has the highest polarizability?

Which of the following interhalogen compounds does not exist?

When a certain circuit consisting of a constant $emf$ $E$,an inductance $L$,and a resistance $R$ is closed,the current in it increases with time according to curve $1$. After one parameter ($E$,$L$,or $R$) is changed,the increase in current follows curve $2$,when the circuit is closed a second time. Which parameter was changed and in what direction?

The Biodiversity Act of India was passed by the Parliament in the year:

For the reaction sequence given below, the correct statement$(s)$ is$(are)$
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$(A)$ Both $X$ and $Y$ are oxygen containing compounds.
$(B) \ Y$ on heating with $CHCl _3 / KOH$ forms isocyanide.
$(C) \ Z$ reacts with Hinsberg's reagent.
$(D) \ Z$ is an aromatic primary amine.