Science, asked by nirmala1212rkpdelhi, 1 month ago

Q1.2) Which of the combination reactions contains at least one compound in its reactants?
A. CaO + H2O = Ca(OH)2
B. 4Fe + 3022Fe,
C. 4K + 02 → 2K O
D. 4k + O2 →2k 2O

Answers

Answered by neeraj131221

2

Answer:

(a) is the answer trust me

Answered by swastikpanda449

1

Answer:

A.cao+h20=ca(oh)2

Explanation:

think you might know the defination of compound now 3022fe is not a compound because it does not have combination of different element similarly o2 is not compound either so A is the correct answer.

please mark it as brainliest

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