Which among the following statements is incor | vedclass

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Question

(C) Magnesium $(Mg)$ is a moderately reactive metal.$1$. It burns in oxygen with a dazzling white flame to form magnesium oxide $(2Mg + O_2 \rightarro

Vedclass · Accepted Answer

It reacts with cold water to form magnesium oxide and evolves hydrogen gas.

Vedclass · Answer

(C) Magnesium $(Mg)$ is a moderately reactive metal.$1$. It burns in oxygen with a dazzling white flame to form magnesium oxide $(2Mg + O_2 ightarrow 2MgO)$. This statement is correct.$2$. Magnesium does not react with cold water. It reacts with hot water to form magnesium hydroxide and hydrogen gas $(Mg + 2H_2O 	ext{ (hot)} ightarrow Mg(OH)_2 + H_2)$. This makes option $C$ incorrect because it claims reaction with cold water.$3$. Magnesium reacts with steam to form magnesium oxide and hydrogen gas $(Mg + H_2O 	ext{ (steam)} ightarrow MgO + H_2)$. Note: Option $D$ is also technically incorrect as it states magnesium hydroxide is formed with steam, but option $C$ is the most fundamentally incorrect statement regarding cold water reactivity.

Which among the following statements is incorrect for magnesium metal?

Similar Questions

Which of the following metals are obtained by electrolysis of their chlorides in molten state?
$(i)$ $Na$
$(ii)$ $Ca$
$(iii)$ $Fe$
$(iv)$ $Cu$

Why do ionic compounds have high melting points? State the reason.

$(i)$ Explain the steps for extraction of copper from its sulphide ore. Write the balanced equations involved in the process.
$(ii)$ What is meant by refining of metals? Draw a diagram of electrolytic refining of copper and name the substances used as cathode, anode, and the electrolyte.

Provide one exception for each of the following general statements:
$(i)$ Metals are lustrous.
$(ii)$ Metals are solids at room temperature.
$(iii)$ Metals have high melting points.
$(iv)$ Non-metals are non-lustrous.
$(v)$ Non-metals are insulators or non-conductors of electricity.

Which of the following reactions is not possible?

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