“$925$ fine silver” means an alloy of :

  • A

    $7.5 \% \,Ag$ and $92.5\% \ Cu$

  • B

    $92.5 \% \, Ag$ and $7.5 \% \, Cu$

  • C

    $80 \% \,Ag$ and $20  \% \, Cu$

  • D

    $90  \% \,Ag$ and $10 \% \,Cu$

Similar Questions

In a borax bead test under hot condition, a metal salt (one from the given) is heated at point $B$ of the flame, resulted in green colour salt bead. The spin-only magnetic moment value of the salt is ........... $BM$ (Nearest integer)
[Given atomic number of $\mathrm{Cu}=29, \mathrm{Ni}=28$, $\mathrm{Mn}=25, \mathrm{Fe}=26]$

  • [JEE MAIN 2024]

$(a)$ Answer the following questions :

$(i)$ Which element of the first transition series has highest second ionisation enthalpy ?

$(ii)$ Which element of the first transition series has highest third ionisation enthalpy ?

$(iii)$ Which element of the first transition series has lowest enthalpy of atomisation ?

$(b)$ Identify the metal and justify your answer.

$(i)$ Carbonyl $M(CO)_5$  $(ii)$  $MO_3F$

On adding excess of $N{H_3}$ solution to $CuS{O_4}$ solution, the dark blue colour is due to

  • [AIIMS 1982]

Which one of the following does not correctly represent the order of property indicated against it

The transition metals have a less tendency to form ions due to