Question
Name two metals which displace hydrogen from dilute acid and name two metals which cannot displace hydrogen from dilute acids.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| Material medium | Refractive index |
| Canada balsam | $1.53$ |
| Rock salt | $1.54$ |
| Carbon disulphide | $1.63$ |
| Dense flint glass | $1.65$ |
| Ruby | $1.71$ |
| Sapphire | $1.77$ |
| Diamond | $2.42$ |