Question

Q1. oxidation is a process of -
a)addition of hydrogen
b)addition of oxygen
c)reduction of oxygen
d) none of these

Q2. ca+ ion is isoelectric with
a)mg2+
b)kr
c)na+
d)ar

Q3. calculate the age percentage f water of crystalizaton in a sample of blue vitrol . (molecular mass f blue vitrol = 249.5)
a)42 percent
b)50 percent
c)46 percent
d)36 percent

Answer 1

1 addition of oxygen.