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Question
Calcium oxide reacts vigorously with water to produce slaked lime.
This reaction can be classified as:
(A) Combination reaction
(B) Exothermic reaction
(C) Endothermic reaction
(D) Oxidation reaction
Options
(A) and (C)
(C) and (D)
(A), (C) and (D)
(A) and (B)
Solution
When calcium oxide reacts with water it produces slaked lime and a huge amount of heat is released, this reaction can be classified as a combination reaction.
Hence, the correct answer is (A) and (B).
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Gas A, which is the major cause of global warming, combines with hydrogen oxide B in nature in the presence of an environmental factor C and a green material D to form a six carbon organic compounds E and a gas F. The gas F is necessary for breathing.
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