SarkariPYQ

SSC GD 2025 PYQ — Question 36

SSC GD Const 2025 (English) - 21 Feb 2025 - Shift 1 • General Awareness • Q36

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Match the following:

 A.  Citric Acid  1.  Basic
 B.  Quicklime  2.  NaCl
 C.  Common Salt  3.  Found in lemons, limes, and oranges
 D.  Bleaching powder  4. CaOCl₂

 

Show answer & explanation

Correct answer: B

Explanation

The correct answer is option 2 i.e. A-3, B-1, C-2, D-4.

  • Citric Acid is a weak organic acid naturally found in high concentrations in citrus fruits such as lemons, limes, and oranges. It's responsible for their tart flavour.

  • Quicklime is the common name for Calcium Oxide (CaO)(\text{CaO}).

  • When dissolved in water, it forms Slaked Lime (Ca(OH)2) ({Ca(OH)}_2), which is a strong base. Therefore, it is fundamentally basic in nature.

  • Common Salt is the household name for Sodium Chloride (NaCl). It is a neutral salt formed from a strong acid (HCl) and a strong base (NaOH).

  • Bleaching powder is the common name for Calcium Oxychloride (CaOCl₂). It is produced by the action of chlorine gas on dry slaked lime and is used for bleaching cotton and as a disinfectant.