Calcium oxide reacts vigorously with water to produce slaked lime whose solution is used for white-washing walls. This slaked lime reacts with component (A) in air to form a thin layer of component (B) to give a shiny finish. What are the components (A) and (B) ?

Consider the following statements regarding burning of magnesium ribbon in air : 1 White powder of MgO is formed. 2. It is an example of combustion reaction. 3. Heat and light are produced. Which of…

At nearly 70°C, sodium bicarbonate shows the property of gradually decomposing, which makes it usable in bakery products. The product of decomposition responsible for this use of sodium bicarbonate is

Match List I with List-II and select the correct answer using the code given below the Lists : List I (Chemical process) A. Electrolysis of water B. Burning of coal C. Iron nail immersed in copper su…

An iron nail dipped in copper sulphate solution turns brown. This is due to which one of the following types of reactions?

When copper reacts with moist carbon dioxide (CO₂) in air, it forms agreen coating of which one of the following compounds?