Refratory bricks used for furnace lining are formed by mixing and drying:
Correct answer: A. MgO and clay
- A. MgO and clay
- B. MgCO3 and clay
- C. MgSO4 and clay
- D. MgCO3 and CaCO3
Explanation
Refractory materials can withstand high temperatures. Refractory bricks are used in lining furnaces, kilns, fireboxes, and fireplaces. They are made by mixing MgO and clay.
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About Reactions of Group II Elements
Group II reactions cover the behaviour of beryllium, magnesium, calcium, strontium and barium with water, oxygen, halogens, acids and nitrogen. The trends in reactivity, hydroxide solubility and basicity, along with the thermal decomposition of carbonates and nitrates, depend on increasing atomic size down the group.
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