Two chemical species X and Y combine together to form a product P which
contains both the properties of X and Y.
X + Y → P
X and Y cannot be broken down into simpler substances by simple chemical
reactions. Which of the following concerning the species X, Y and P are correct?
(i) P is a compound.
(ii) X and Y are compounds.
(iii) X and Y are elements.
(iv) P has a fixed composition.
A(i), (ii) and (iii) only
B(i), (ii) and (iv) only
C(ii), (iii) and (iv) only
D(i), (iii) and (iv) only