(i) True
Since it has one term, it is a monomial.
(ii) False
2x + 5 = 8
or, 2x + 5 5 = 8 5 [Subtracting 5 from both the sides]
or, 2x = 3
or, x = 3/2 and not x = 2/3
(iii) True
This is because the maximum power of the variable x is 1.
(iv) False
The coefficient of x in 5xy would be 5y.
(v) True
8 − x = 5
or, 8 − 5 = x
or, 3 = x