Complete GATE BT 2022 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 13–15 of 65. Imported answers require review unless explicitly marked reviewed.

Paper practice 65 questionsPage 5 of 22

Question 13

Open question
BTMCQ1 markNeeds review
For a double-pipe heat exchanger, the inside and outside heat transfer coefficients are 100 and 200 W m

K

, respectively. The thickness and thermal conductivity of the thin-walled inner pipe are 1 cm and 10 W m

K

, respectively. The value of the overall heat transfer coefficient is ________ W m

K

.
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Question 14

Open question
BTMCQ1 markNeeds review
Match the media component (Column I) with its role (Column II).
Column I
Column II
P. Sucrose
1. Anti-foam agent
Q. Zinc chloride
2. Nitrogen source
R. Ammonium sulphate
3. Carbon source
S. Silicone oil
4. Trace element
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Question 15

Open question
BTMCQ1 markNeeds review
The binding free energy of a ligand to its receptor protein is −11.5 kJ mol

at 300 K. What is the value of the equilibrium binding constant?
Use R = 8.314 J mol

K

.
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