The addition of electrons to a substance is called …………
a) oxidation
b) reduction
c) acylation
d) lactation
In reaction Sn+4 + 2e-→ Sn+2………. process is involved .
a) reduction
b) oxidation
c) hydration
d) rusting
The process which involves gain and loss of electrons simultaneously called …………..
a) oxidation reaction
b) reduction reaction
c) redox reaction
d) none of these
Oxidation States and rules for assigning Oxidation states:
Apparent charge on an atom of an element in a molecule or an ion called ………….
a) atomic number
b) mass number
c) oxidation number
d) proton number
Explanation:The oxidation state, or oxidation
number, is the hypothetical charge of an atom if all of its bonds to different
atoms were fully ionic. It describes the degree of oxidation of an atom in a
chemical compound. Conceptually, the oxidation state may be positive, negative
or zero.
Oxidation numbers are useful in …………….
a) naming compounds
b) writing formulas
c) balancing chemical equations
d) all of these
