Identify substance J based on its reactions with water and hydrochloric acid, given it produces a golden yellow flame.

To identify substance J, we need to synthesize the observations and inferences from the provided table:

1. Preliminary Test (top of page): "A persistent golden yellow colour" indicates the Presence of Sodium (Na) in the sample.
2. Test (i) - Dissolving J in water and testing with litmus:
   • Observation: "Turns red litmus paper blue and has no effect on blue litmus paper."
   • Inference: "Solution is alkaline. Substance is an amide or salt of a weak acid and a strong base which undergoes hydrolysis."
   • This confirms J forms an alkaline solution.
3. Test (iii) - Adding dilute hydrochloric acid to the solution of J:

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