TLS Online TPP Program

#Question id: 768


MicroRNAs are important gene regulators, but the miRNAs are also regulated in turn by other RNAs. Which, if any, of the following classes of RNA are not known to contain RNAs that regulate miRNAs?

#SCPH05 I Biotechnology
  1. Pseudogene RNA

  2. Ribosomal RNA

  3. Long noncoding RNA

  4. Circular RNA

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TLS Online TPP Program

#Question id: 15462

#SCPH05 I Biotechnology

What is the enthalpy of 150 g formic acid at 70°C and 1 atm relative to 25°C  and 1 atm? (Cp for formic acid is 0.524 cal g-1 °C-1)

TLS Online TPP Program

#Question id: 15463

#SCPH05 I Biotechnology

A system in which there is exchange of energy but not of mass, is called a/an    ______                 system

TLS Online TPP Program

#Question id: 15464

#SCPH05 I Biotechnology

The quantity of heat required to evaporate 1 kg of a saturated liquid is called

TLS Online TPP Program

#Question id: 15465

#SCPH05 I Biotechnology

50 g benzaldehyde vapour is condensed at 179°C. What is the enthalpy of the liquid relative to the vapour?  (Standard latent heat for vaporisation for benzaldehyde is 38.40 kJ gmol-1)

TLS Online TPP Program

#Question id: 15466

#SCPH05 I Biotechnology

Water at 25°C enters an open heating tank at a rate of 10 kg h-1. Liquid water leaves the tank at 88°C at a rate of 9 kg h-1; 1 kg h-1 water vapour is lost from the system through evaporation. At steady state, what is the rate of heat input to the system?
h (liquid water at 25°C = 104.8 kJ kg-1
h (liquid water at 88°C = 368.5 kJ kg-1
h (saturated steam at 88°C = 2656.9 kJ kg-1)

TLS Online TPP Program

#Question id: 15467

#SCPH05 I Biotechnology

Fumaric acid is produced from Malic acid using Fumarase. Calculate standard heat of reaction for the following transformation:
C4H6O5 → C4H4O4 + H2O
Given: (Δhc°)malic acid= -1328.8 kJ/gmol 
   (Δhc°)Fumaric acid= -1334.0 kJ/gmol