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Which of the following does not respond to the chromyl chloride test?

Which of the following does not respond to the chromyl chloride test?

کرومل کلورائد ٹیسٹ کا مندرجہ ذیل میں سے کون سا جواب نہیں دیتا ہے؟
Explanation
  • The chromyl chloride test is used to detect chloride ions (Cl⁻) from ionic chlorides like NaCl but does not work for covalent chlorides.
  • Mercuric chloride (HgCl₂) is a covalent chloride, so it does not respond to the test.