Stainless steel is an alloy comprising of
Fe and C
Fe and Ni
Fe, C and Ni
Fe, C and Al
Correct answer is C
Stainless steel comprises iron (Fe), chromium (Cr), manganese (Mn), silicon (Si), carbon (C) and, in many cases, significant amounts of nickel (Ni) and molybdenum (Mo).
The valence electrons of 12Mg are in the
3s orbital
2px
2s orbital
1s orbital
Correct answer is A
12Mg=2,8,2
=1s22s22p63s2
The preferential discharge of ions during electrolysis is influenced by the
mechanism of electrolysis
electrolytic reactions
nature of the electrode
type of electrolytic cell
Correct answer is C
The preferential discharge of ions is influenced by:
- The position of the ions in the electrochemical series
- The concentration of the ions in the electrolyte
- The nature of the electrode
When a salt is added to its saturated solution, the salt
dissolves and the solution becomes super saturated
dissolves and the solution becomes unsaturated
precipitates and the solution remains unchanged
dissolves and crystals are formed
Correct answer is C
The point of saturation is the point it gets to and from thence, the solution can no longer take in the salt anymore. From this point, it begins to form precipitate while the solution remains unchanged.