Which among the following statements is incor | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

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

In the presence of which catalyst is vegetable ghee prepared from vegetable oil?

Which gas is used in the process of converting vegetable oils into vegetable ghee?

Write the chemical equations for the reactions of zinc granules with:
$(i)$ Sulphuric acid
$(ii)$ Hydrochloric acid
$(iii)$ Aluminium chloride
$(iv)$ Sodium hydroxide
$(v)$ Nitric acid

State the conditions under which the following metals react with water. Write the equation for each reaction:
$(a)$ $Na$
$(b)$ $Mg$
$(c)$ $Fe$

Four groups are given linking a metal, its ore, and the chemical formula of the main component of the ore. How many of these are correct?
$(1)$ Iron - Magnetite - $Fe_{3}O_{4}$
$(2)$ Iron - Siderite - $FeS_{2}$
$(3)$ Copper - Copper glance - $Cu_{2}S$
$(4)$ Copper - Dolomite - $Al_{2}O_{3}$

Vedclass Test Series

Exam Paper Generator

Online Exam Module