Which of the following is wrong statement?
Ni(CO)4 has oxidation number +4 for Ni
Ni(CO)4 has zero oxidation number for Ni
Ni is metal
CO is gas
H2C2O4 + KMnO4 in acidic medium reacts to have change in oxidation number of Mn from
7 to 5
2 to 7
5 to 7
7 to 2
Carborandum is
Al2O3
AlCl3
CuCO3
SiC
D.
SiC
When silicon reacts with carbon, it forms carborandum. Hence, it is represented as SiC.
Frenkel and Schottky defects are
nucleus defects
non-crystal defects
crystal defects
nuclear defects