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TLS Online TPP Program

#Question id: 346

The partial negative charge in a molecule of water occurs because ________.

#Section 4: Fundamentals of Biological Engineering

  1. the oxygen atom donates an electron to each of the hydrogen atoms

  2. the electrons shared between the oxygen and hydrogen atoms spend more time around the oxygen atom nucleus than around the hydrogen atom nucleus

  3. the oxygen atom has two pairs of electrons in its valence shell that are not neutralized by hydrogen atoms

  4. one of the hydrogen atoms donates an electron to the oxygen atom

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TLS Online TPP Program

#Question id: 36358

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which of the following statements is/are correct regarding SignalP ? 
TLS Online TPP Program

#Question id: 40801

#Section 5: Bioprocess Engineering and Process Biotechnology

A first-order reaction is 50% complete in 40 minutes. Calculate the time required for the reaction to reach 79% completion.
TLS Online TPP Program

#Question id: 40802

#Section 5: Bioprocess Engineering and Process Biotechnology

The rate constant for a first-order reaction is 4.606×10−3 s−1. How much time is required for the initial reactant concentration to drop from 2.0 M to 0.2 M?
TLS Online TPP Program

#Question id: 40995

#Section 5: Bioprocess Engineering and Process Biotechnology

Q. A rigid tank is being filled with hot water. During the process, 4 kg of water enters the tank with a specific enthalpy of 250 kJ/kg. The tank loses 50 kJ of heat to the surroundings. No water leaves the tank and no shaft work is done.
The energy accumulated inside the tank is:
TLS Online TPP Program

#Question id: 40996

#Section 5: Bioprocess Engineering and Process Biotechnology

Q. Steam flows through a heat exchanger. 8 kg of steam enters with a specific enthalpy of 320 kJ/kg and leaves with a specific enthalpy of 250 kJ/kg. During the process, 100 kJ of heat is supplied to the heat exchanger. No shaft work is involved.
The energy accumulated inside the heat exchanger is:
TLS Online TPP Program

#Question id: 40997

#Section 5: Bioprocess Engineering and Process Biotechnology

Q. An air compressor fills a rigid storage tank. 5 kg of compressed air enters the tank with a specific enthalpy of 300 kJ/kg. During filling, the tank loses 40 kJ of heat to the surroundings. There is no outlet flow and no shaft work.
The increase in stored energy inside the tank is: