Match the following items in column I with the corresponding items in column II. Column I I. $\mathrm{Na}_{2} \mathrm{CO}_{3} .10 \mathrm{H}_{2} \mathrm{O}$ II. $\mathrm{Mg}\left(\mathrm{HCO}_{3}\right)_{2}$ III. NaOH IV. $\mathrm{Ca}_{3} \mathrm{Al}_{2} \mathrm{O}_{6}$ Column II A. Portland cement ingredient B. Castner - Kellner process C. Solvay process D. Temporary hardness

JEE Main · 2019 · 11 Jan 2019 · Shift 2 · s-Block Elements

Match the following items in column I with the corresponding items in column II.

Column I
I.

Na_{2} CO_{3} .10 H_{2} O

II.

Mg (HCO_{3})_{2}

III. NaOH
IV.

Ca_{3} Al_{2} O_{6}

Column II
A. Portland cement ingredient
B. Castner - Kellner process
C. Solvay process
D. Temporary hardness

Answer: A → III, B → IV, C → II, D → I

Taking each compound to its process or property: washing soda

Na X_{2} CO X_{3} \cdot 10 H X_{2} O

is made by the Solvay process;

Mg (HCO X_{3}) X_{2}

is a cause of the temporary hardness of water; sodium hydroxide is manufactured by the Castner

-

Kellner process, the electrolysis of brine; and tricalcium aluminate

Ca X_{3} Al X_{2} O X_{6}

is an ingredient of Portland cement.

JEE Main · 2019 · 11 Jan 2019 · Shift 2 · Match the columns