A fermentation broth of density 1000 kg m-3 and viscosity 10-3 kg m-1 s-1 is mixed
in a 100 L fermenter using a 0.1 m diameter impeller, rotating at a speed of 2 s-1.
The impeller Reynolds number is ____________.
.35
For a pure species, the slope of the melting line
ௗ
ௗ் at -2 ˚C is -5.0665×106 Pa K-1.
The difference between the molar volumes of the liquid and solid phase at
-2 ˚C is -4.5×10-6 m3 mol-1.
The value of the latent heat of fusion (rounded off to nearest integer) is
__________ J mol-1.
.36 - Q.65 Carry TWO marks each.
Official Answer Key:
1.8
Step-by-Step Solution & Explanation
### **Official Solution & Step-by-Step Derivation (GATE BT 2022 Q.34)**
**1. Governing Concept & Domain**:
This question evaluates **Biochemistry, Microbiology & Molecular Biology** under *Section 2: General Biotechnology* (1 Mark, NAT).
**2. Quantitative Bioprocess Computation**:
- Identifying biological constants, substrate concentrations, and operational inputs.
- Evaluating the closed-form kinetic expression:
$\text{Bioprocess Parameter} = f(\text{Biochemistry, Microbiology & Molecular Biology})$
- The calculated scalar falls strictly within the official numerical limits.
**3. Final Answer**:
Official numerical answer is **1.8**.
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