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TLS Online TPP Program

#Question id: 4948

RNA molecules can both carry genetic information and be catalytic. This supports the proposal that 

#XL - T Zoology

  1. RNA was the first hereditary information.

  2. protobionts had an RNA membrane.

  3. RNA could make energy.

  4. free nucleotides would not have been necessary ingredients in the synthesis of new RNA molecules.

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TLS Online TPP Program

#Question id: 20168

#XL - P Chemistry

The uncertainty in the momentum of an electron is 1·0 × 10–5 kg ms–1. The uncertainty in its position will be (h = 6·62 x 10–34 kg m2s–1)
TLS Online TPP Program

#Question id: 20169

#XL - P Chemistry

If the radius of first Bohr orbit be a0, then the radius of third Bohr orbit would be
TLS Online TPP Program

#Question id: 20170

#XL - P Chemistry

The first emission line in the atomic spectrum of hydrogen in the Balmer series appears at
TLS Online TPP Program

#Question id: 20171

#XL - P Chemistry

The ratio of specific charge of a proton and an Alpha particle is
TLS Online TPP Program

#Question id: 20172

#XL - P Chemistry

The de-Broglie wavelength of a particle with mass 1g and velocity 100 m/s is
TLS Online TPP Program

#Question id: 20173

#XL - P Chemistry

Which of the following sets of quantum numbers belongs to highest energy ?