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#Question id: 20053


Atoms complete octet in valence shell electron during the bond formation. This postulate was proposed by which scientist ?

#XL - P Chemistry
  1. Powel
  2. Lewis 
  3. Sigdwick 
  4. Mulliken

Answer:- Option(s): 2


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#Question id: 749

#XL - Q Biochemistry

Which of the following is correct for the A form of DNA structures?

TLS Online TPP Program

#Question id: 750

#XL - Q Biochemistry

In strong acid and at elevated temperatures, for example perchloric acid (HClO4) at more than 100°C, nucleic acids tend to:

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#Question id: 751

#XL - Q Biochemistry

The effect of alkali is to change the ___________________ of the DNA structure:

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#Question id: 752

#XL - Q Biochemistry

The A260/A280 ratio of a double-stranded DNA sample can be used to assess its purity. The value for the pure DNA is ----------------

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#Question id: 753

#XL - Q Biochemistry

The renaturation of regions of complementarity between different nucleic acid strands is known as___________

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#Question id: 754

#XL - Q Biochemistry

If the twisting of the DNA is in the same direction as that of the double helix, that is the helix is twisted up before closure, this form of super coiling is known as;

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