NEET 2019 · Class 12

Biotechnology: Principles and Processes

DNA precipitation out of a mixture of biomolecules can be achieved by treatment with [NEET 2019]

  1. (A)Chilled ethanol
  2. (B)Methanol at room temperature
  3. (C)Chilled chloroform
  4. (D)Isopropanol

The NCERT line that answers it

Verbatim line

Other molecules can be removed by appropriate treatments and purified DNA ultimately precipitates out after the addition of chilled ethanol.

Chapter
Biotechnology: Principles and Processes
Section
9.3.1 Isolation of the Genetic Material (DNA)
Page
10
Words matched
20 of 20

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

6667, emb=1.0, combined=0.8667). Verified: high — The span explicitly states 'purified DNA ultimately precipitates out after the addition of chilled ethanol,' which directly matches the correct answer A) Chilled ethanol and distinguishes it from the other options.

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