Naturally occurring boron has $20\%\, _5B^{10}$ and $80\%\, _5B^{11}$. The atomic weight of boron is :-

If we consider that $1/6$ of the mass of a carbon-$12$ atom, in place of $1/12$, is taken to be the relative atomic mass unit, the mass of one mole of a substance will

The equivalent weight of a metal is $4.5$ and the molecular weight of its chloride is $80$. The atomic weight of the metal is

When an ion absorbs $6 \times 10^{20}$ electrons,it gets reduced. What is the number of gram equivalents of the ion?

The ratio of equivalent weights of $C_2H_5OH$ in the following reactions is
$(i)$ $C_2H_5OH \longrightarrow CH_3CHO$
$(ii)$ $C_2H_5OH \longrightarrow C_2H_5ONa$

What is the weight of $1$ atom of $H$ in grams? (Atomic mass of $H = 1.008$)