Consider the reaction represented by the equation: Ca(OH)2(aq) + CO2(g) → CaCO3(s) + H2O(l). In the reaction above, CO2 acts as
A. an acidic oxide B. an oxidizing agent C. a basic oxide D. a dehydrating agent Correct Answer: Option A A. an acidic oxideIn which of the following compound (s) will heat be absorbed on adding water? l. KNO3 II. Concentrated H2SO4 III. NH4CI
A. I only B. lll only C. l and lll only D. ll and lll only Correct Answer: Option B B. lll onlyWhich of the following statements is true of the molecules of a gas under ideal conditions? The molecules
A. move at random B. undergo inelastic collisions C. attract each other D. occupy a large volume Correct Answer: Option A A. move at randomWhich of the following gases is light than air?
A. CO2 B. SO2 C. HCI D. NH3 Correct Answer: Option D D. NH3Products
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