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TLS Online TPP Program

#Question id: 5760

The fluctuation test of Luria and Delbruck (studying resistance to bacteriophge T1 infection) established that

#XL - S Microbiology

  1. T1 phage was a mutagen.

  2. Mutations could arise prior to the time they were selected

  3. The mutation rate varies greatly from experiment to experiment.

  4. In E. coli the number of mutants per clone was relatively constant.

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TLS Online TPP Program

#Question id: 19628

#XL - P Chemistry

Which of the following pairs constitutes a buffer ?
TLS Online TPP Program

#Question id: 19629

#XL - P Chemistry

Le Chatelier’s principle is applicable to:
TLS Online TPP Program

#Question id: 19630

#XL - P Chemistry

Which of the following is the weakest base?
TLS Online TPP Program

#Question id: 19631

#XL - P Chemistry

When NH4Cl is added to NH4OH solution the dissociation of ammonium hydroxide is reduced. It is due to:
TLS Online TPP Program

#Question id: 19632

#XL - P Chemistry

For the reversible reaction

N2 (g) + 3H2(g) ⇋ 2NH3 + Heat

The equilibrium shifts in forward direction
TLS Online TPP Program

#Question id: 19633

#XL - P Chemistry

A base according to Bronsted concept is a substance which can: