Q. Which of the following reactions involves the combination of two elements ?
(A) CaO + CO2 + CaCO3
(B) 4Na+O2→ 2Na2O
(D) NH3+HCI ---NH4CI
(C)SO2+1/2O2---SO3
Answers
Answered by
8
Answer:
option b
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Answered by
2
Answer:
D) NH3 + HCL -----------》 NH4CL
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