Chemical Engineering
2017 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE CH 2017 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 40–42 of 65. Imported answers require review unless explicitly marked reviewed.
Question 40
Open questionCHMCQ2 marksNeeds review
A fluid flows over a heated horizontal plate maintained at temperature
. The bulk temperature of the fluid is
. The temperature profile in the thermal boundary layer is given by:
Here,
is the vertical distance from the plate,
is the thickness of the thermal boundary layer and
is the thermal conductivity of the fluid.
The local heat transfer coefficient is given byYour answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 41
Open questionCHMCQ2 marksNeeds review
In nucleate boiling, the pressure inside a bubble is higher than the pressure of the surrounding liquid. Assuming that both the liquid and vapour are saturated, the temperature of the liquid will ALWAYS be
Your answerChoose one option.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 42
Open questionCHNAT2 marksNeeds review
The vapor phase composition and relative volatilities (with respect to n-propane) on an ideal tray of a distillation column are
Component | Methane | Ethane | n-Propane |
|---|---|---|---|
Mole fraction in vapor | 0.12 | 0.28 | 0.60 |
Relative volatility | 10 | 4 | 1 |
The mole fraction of n-propane in the liquid phase, rounded to 2 decimal places, is ____________.
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer