Question

(4) Shifting one term from one side of an equation to another side with change of
sign is know as
(c) distributive
(d) associatively
(a) Commutative (b) transposition
(5) Value of x in 35 + x = 8x is
(c) 5
(d) 6
(a) 8
(b) 7
(6) If x = 3 then 3x + 5 is
(d) 15
(c) 12
(b) 14
5L
(a) 10​

Answer 1

Answer:

In early production, first calcium cyanamide was converted into dicyandiamide, which was heated above its melting temperature to produce melamine. Today most industrial manufacturers use urea in the following reaction to produce melamine: 6 (NH2)2CO → C3H6N6 + 6 NH3 + 3 CO.