Multiple Choice Question Answer VI — task. Science CBSE, Class 10.

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1. Which of the following is a decomposition reaction?

NaOH + HCl → NaCl + \(H_2O\)
\(NH_4CNO\) → \(H_2NCONH_2\)
\(2KClO_3\) → 2KCl + \(3O_2\)
\(H_2\) + \(I_2\) → 2HI

2. Identify a, b, c, & d in the following reaction?
\(aAlCl_3\) + \(bCa(OH)_2\) → \(cAl(OH)_3\) + \(dCaCl_2\)

a = 2 b = 3 c = 2 d = 3
a = 3 b = 1 c = 3 d = 2
a = 3 b = 3 c = 3 d = 3
a = 2 b = 1 c = 3 d = 4

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