4. Which of the following equations represents a double decomposition reaction?
(a) H2+C12 → 2HCI
(b) 2NaNO3 → 2NaNO, +O,
(c) AgNO3+ NaCl → AgCl + NaNO3
(d) 2H2 +O2→2H2O
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(C) is the required answer
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Explanation:
In which of the following reactions will heat be evolved?
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