Using formula of Stoichiometry, 1mol MgCl₂ : 1mol Mg₂+: 2mol Cl-. There are two moles of chloride ions for every one mole of MgCl₂. So if there is one million Mg₂+ ions in MgCl₂, there will be two million chloride ions in it

Correct Option: A

Using formula of Stoichiometry, 1mol MgCl₂ : 1mol Mg₂+: 2mol Cl-. There are two moles of chloride ions for every one mole of MgCl₂. So if there is one million Mg₂+ ions in MgCl₂, there will be two million chloride ions in it

Sodium bicarbonate (NaHCO₃) is also known as baking soda, bread soda, cooking soda, and bicarbonate of soda. It is primarily used in cooking (baking), as a leavening agent. It reacts with acidic components in batters, releasing carbon dioxide, which causes expansion of the batter and forms the characteristic texture and grain in pancakes, cakes, quick breads, etc.

Correct Option: B

Sodium bicarbonate (NaHCO₃) is also known as baking soda, bread soda, cooking soda, and bicarbonate of soda. It is primarily used in cooking (baking), as a leavening agent. It reacts with acidic components in batters, releasing carbon dioxide, which causes expansion of the batter and forms the characteristic texture and grain in pancakes, cakes, quick breads, etc.

Dry ice, sometimes referred to as “cardice,” is the solid form of carbon dioxide. It is used primarily as a cooling agent. Its advantages include lower temperature than that of water ice and not leaving any residue. It is useful for preserving frozen foods, ice cream, etc., where mechanical cooling is unavailable.

Correct Option: B

Dry ice, sometimes referred to as “cardice,” is the solid form of carbon dioxide. It is used primarily as a cooling agent. Its advantages include lower temperature than that of water ice and not leaving any residue. It is useful for preserving frozen foods, ice cream, etc., where mechanical cooling is unavailable.

Dolomite is a common rock-forming mineral. It is a calcium magnesium carbonate with a chemical composition of CaMg(CO₃)₂. It is the primary component of the sedimentary rock known as dolostone and the metamorphic rock known as dolomitic marble. Dolomite is used in the Pidgeon process for the production of magnesium.

Correct Option: C

Dolomite is a common rock-forming mineral. It is a calcium magnesium carbonate with a chemical composition of CaMg(CO₃)₂. It is the primary component of the sedimentary rock known as dolostone and the metamorphic rock known as dolomitic marble. Dolomite is used in the Pidgeon process for the production of magnesium.

Sodium bicarbonate and organic acid (Formic acid, Acetic acid, Carbonic acid, etc) react vigorously to liberate carbon dioxide. For example, Sodium bicarbonate (NaHCO₃) when treated with acetic acid reacts vigorously to liberate carbon dioxide.
NaHCO_{3 + CH3COOH → CH3COONa + H2O + CO2}

Correct Option: D

Sodium bicarbonate and organic acid (Formic acid, Acetic acid, Carbonic acid, etc) react vigorously to liberate carbon dioxide. For example, Sodium bicarbonate (NaHCO₃) when treated with acetic acid reacts vigorously to liberate carbon dioxide.
NaHCO_{3 + CH3COOH → CH3COONa + H2O + CO2}