Verified Solution • 2025–26 Session
moderate
QJEEM20Ch75fe: JEE Main 2020 Chemistry - Class 11 JEEM20Ch75fe Solution: Match the following compounds (Column-I) with their uses…
Match the following compounds (Column-I) with their uses (Column-II) :
| S.No. | Column-I | S.No. | Column-II |
|---|---|---|---|
| (I) | Ca(OH)2 | (A) | casts of statues |
| (II) | NaCl | (B) | white wash |
| (III) | CaSO4, | (C) | antacid |
| (IV) | CaCO3 | (D) | washing soda preparation |
Multiple Choice Options
- A (I)-(B), (II)-(C), (III)-(D), (IV)-(A)
- B (I)-(B), (II)-(D), (III)-(A), (IV)-(C)
- C (I)-(C), (II)-(D), (III)-(B), (IV)-(A)
- D (I)-(D), (II)-(A), (III)-(C), (IV)-(B)
Step-by-Step Verified Solution
(I) Ca(OH)2 is used in white wash due to its disinfectant nature.
(II) NaCl is used in preparation of washing soda(Na2CO3).
(1) 2NH3 + H2O + CO2
(2) (NH4 )2CO3 + H2O + CO2
(3) NH4HCO3 + NaCl
(4) 2NaHCO3
(III) CaSO4.
(IV) CaCO3 is used as an Antacid.
(II) NaCl is used in preparation of washing soda(Na2CO3).
(1) 2NH3 + H2O + CO2
(2) (NH4 )2CO3 + H2O + CO2
(3) NH4HCO3 + NaCl
(4) 2NaHCO3
(III) CaSO4.
(IV) CaCO3 is used as an Antacid.