DNA precipitation out of a mixture of biomolecules can be achieved by treatment with :

1. Isopropanol

2. Chilled ethanol

3. Methanol at room temperature

4. Chilled chloroform

Doubtly Asked 30 Oct 2026 NEET UG 2019 Practice test neet Save WhatsApp Report

1 answer

Best answer

Answer: 2. Chilled ethanol

DNA is precipitated by adding chilled ethanol, and it then appears as fine threads that can be spooled out.

Option 2 is correct. The other alcohols and chloroform are not used for this purpose in the NCERT procedure.

Doubtly AI · 30 Oct 2026 AI-generated · not yet verified Report

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