Question

Which of the following involves combination of two elements ?

(a) N2(g) + 3H2(g) + 2NH3(g)
(b) CaO(s) + CO2(g) - CaCO3(g)
(c) 2502(g) + O2(g) → 2503f(g)
(d) NH3(g) + HCl(g) - NH4Cl(s)​

Answer 1

Answer:

option a is right ........

Answer 2

Answer:

Answer is as follows:-

Explanation:

2502(g) + O2(g) → 2503f(g)

Option c is correct

Explanation:- Here, combination reaction is the reaction in which two reactants reacts with each other to form a product....

hence [c] is the correct option

In other sense,

except (c) all other are not chemical equations because the arrow is not given....

So, the option (c) is correct...