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TLS Online TPP Program

#Question id: 5249

What is the best explanation for why Bernard Davis didn't observe generalized transduction in his U tube experiments?

#XL - S Microbiology

  1. He used genes that could not be packaged into a bacteriophage head

  2. He used bacterial strains that could not fit through the filter

  3. He used bacterial strains that did not host a prophage.

  4. He used virulent bacteriophage

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TLS Online TPP Program

#Question id: 20140

#XL - P Chemistry

How fast an electron is moving if it has a wavelength equal to the distance it travel in one second?
TLS Online TPP Program

#Question id: 20141

#XL - P Chemistry

If uncertainties in the measurement of position and momentum are equal, the uncertainty in the measurement of velocity is
TLS Online TPP Program

#Question id: 20142

#XL - P Chemistry

Energy equivalent of 10.00 cm–1 is
TLS Online TPP Program

#Question id: 20143

#XL - P Chemistry

The ratio of energy of the electron in ground state of hydrogen to the electron in first excited state of Be+3 is
TLS Online TPP Program

#Question id: 20144

#XL - P Chemistry

The shortest wavelength of H-atom in Lyman series is x, then longest wavelength in Balmer series of He+ is
TLS Online TPP Program

#Question id: 20145

#XL - P Chemistry

The radius of first Bohr orbit is , then de-Broglie wavelength of electron in 3rd orbit is nearly