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The first aid for acid burn in a laboratory in

ASodium carbonate

BSodium bi carbonate

CSodium hydroxide

DSodium Acetate

Answer:

B. Sodium bi carbonate

Read Explanation:

  • When a chemical burn occurs from an acid in a laboratory, the affected area should be flushed immediately with plenty of water. Afterward, a mild, weak base like sodium bicarbonate (baking soda) should be applied to neutralize the remaining acid safely.

  • Using a strong alkali like sodium hydroxide is dangerous because it is highly corrosive and will cause a severe chemical base burn on top of the existing acid burn, making the tissue injury much worse.


Related Questions:

Professional ethics of a teacher mainly relate to :
The proponent of Concept Attainment Modelis:

The following are two statements:

Assertion (A) and Reason (R)

Assertion (A) : Teaching support system whether traditional or modern is implemented to enhance efficiency and maintain quality in teaching learning processes.

Reason (R) : In order for learning outcomes to align with instructional goals, scaffolding is necessary to start with.

വിദ്യാർത്ഥികളിൽ ശ്രവണനൈപുണി വികസിപ്പിക്കുന്നതിനായി അധ്യാപികയ്ക്ക് സ്വീകരിക്കാവുന്ന കൂടുതൽ ഫലപ്രദമായ മാർഗ്ഗം ഏതാണ് ?
Which step is crucial in the syntax of the teaching model for memory level and understanding level ?