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TLS Online TPP Program
#Question id: 7498
#General Aptitude
Two trains of length 250 m and 140 m are running on parallel lines in the same direction at 58 km/h and 32 km/h respectively. Find the time taken by the slower train to pass the driver of the faster one.
TLS Online TPP Program
#Question id: 18639
#Section 7: Recombinant DNA technology and Other Tools in Biotechnology
Which one of the following techniques is used for the evaluation of phylogenetic trees?
TLS Online TPP Program
#Question id: 1875
#Section 2: General Biology
What is the best description of an antibody that would prevent infection with HIV?
TLS Online TPP Program
#Question id: 3667
#Section 3: Genetics, Cellular and Molecular Biology
In an ______________ plasmid, replication occurs in two stages. In the first stage, the double stranded circular plasmid DNA replicates to form another double-stranded circular DNA and a single-stranded circular DNA, In the second stage, the complementary strand is synthesized on the single-stranded DNA to make another double-stranded DNA.
TLS Online TPP Program
#Question id: 14232
#Section 5: Bioprocess Engineering and Process Biotechnology
Nutrient medium is to be heated from 10⁰C to 28⁰C is a single-pass countercurrent shell-and-tube heat exchanger before being pumped into a fed-batch fermenter. Medium passes through the tubes of the exchanger; the shell-side fluid is water which enters with flow rate 3 x 10^4 kg h^- 1 and temperature 60⁰C pre-heated medium is required at a rate of 50 m^3 h^-1. The density, viscosity and heat capacity of the medium are the same as water; the thermal conductivity of the medium is 0.54 Wm^- 1 ⁰C^ - 1. It is proposed to use 30 steel tubes with inner diameter 5 cm; the tubes will be arranged in line. The pipe wall is 5-mm thick; the thermal conductivity of the metal is 50 Wm^- 1 ⁰C^ - 1. The maximum linear shell-side fluid velocity is estimated as 0.15 m s^-1. What is the rate of heat transfer?