ACE GATE & PSUs with Ankush Gupta | Chemical Engg.

This is a message I received from one of your friends, and I’m truly grateful that I was able to contribute, even a little, to his success. 🙏

One thing he mentioned was that most interview questions came from Thermodynamics — and this is something I keep repeating: fundamentals never betray you.

He was kind enough to mention me, but honestly, it was his hard work, discipline, and dedication that made this possible.

For the past 15 years, I’ve been working for this feeling — being able to guide students in building strong fundamentals and confidence. 🌱

Thank you for trusting me. I’ll continue to guide you sincerely in your preparation journey.

#Thermodynamics #FundamentalsFirst #StudentSuccess #Grateful

3 days ago | [YT] | 12

ACE GATE & PSUs with Ankush Gupta | Chemical Engg.

🌪️🔥 Grashof vs Reynolds — Regime Trap

In natural convection, the ratio Gr / Re^2 indicates:



📌 Answer + explanation tomorrow (pinned comment)
❓ Confused between streamline vs flow field? Ask below 👇
🎥 Want a full concept video? Tell me!

1 week ago | [YT] | 0

ACE GATE & PSUs with Ankush Gupta | Chemical Engg.

For natural convection from a vertical plate, if the plate height is doubled while all fluid properties remain same, the Nusselt number will:



📌 Answer + explanation tomorrow (pinned comment)
❓ Confused between streamline vs flow field? Ask below 👇
🎥 Want a full concept video? Tell me!

1 week ago | [YT] | 0

ACE GATE & PSUs with Ankush Gupta | Chemical Engg.

🧪📏 Reynolds vs Froude — Model Similarity Trap

A ship model is tested in a towing tank. To correctly predict wave resistance of the prototype, which similarity must be satisfied?



📌 Answer + explanation tomorrow (pinned comment)
❓ Confused between streamline vs flow field? Ask below 👇
🎥 Want a full concept video? Tell me!

1 week ago | [YT] | 0

ACE GATE & PSUs with Ankush Gupta | Chemical Engg.

⚖️🧠 Thermodynamics — Gibbs Phase Rule Check 👀

A non-reactive system at equilibrium has:
🔹 2 liquid phases
🔹 1 vapor phase
🔹 3 components

The degrees of freedom (F) of the system is:





📌 Answer + step-by-step logic in pinned comment tomorrow
❓ Count phases carefully — liquid phases ≠ components ⚠️
🎥 Want a short video on tricky Phase Rule cases? Tell me 👇

2 weeks ago | [YT] | 2

ACE GATE & PSUs with Ankush Gupta | Chemical Engg.

🧲🧠 CRE — Effect of Catalyst Deactivation

A catalyst deactivates as:
a = 1 / (1 + kt)

For a first-order reaction in a batch reactor, the conversion after time t, compared to fresh catalyst, will be:



📌 Answer + explanation tomorrow (pinned).
❓ Doubts? Ask below 👇
🎥 Want a full video? Tell me!

2 weeks ago | [YT] | 0

ACE GATE & PSUs with Ankush Gupta | Chemical Engg.

🧪🧠 Mass Transfer — Gas Absorption — Hatta Number Insight

In gas absorption with chemical reaction, a Hatta number ≫ 1 indicates:



📌 Answer + explanation tomorrow (pinned).
❓ Doubts? Ask below 👇
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2 weeks ago | [YT] | 1

ACE GATE & PSUs with Ankush Gupta | Chemical Engg.

🚰🧠 Fluid Mechanics — Velocity Scaling in Turbulent Flow

For turbulent flow in a smooth pipe, if the velocity is doubled, the pressure drop per unit length increases by a factor of:



📌 Answer + explanation tomorrow (pinned).
❓ Doubts? Ask below 👇
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2 weeks ago | [YT] | 0

ACE GATE & PSUs with Ankush Gupta | Chemical Engg.

🌊🧠 Fluid Mechanics — Two-Layer Flow in a Pipe

Two immiscible liquids flow in a horizontal pipe:
🔹 Density₁ = 800 kg/m³ (top layer)
🔹 Density₂ = 1200 kg/m³ (bottom layer)

Both layers have the same average velocity (2 m/s).
The pressure drop per meter equals that of a single fluid with density:

2 weeks ago | [YT] | 0

ACE GATE & PSUs with Ankush Gupta | Chemical Engg.

🔥🧠 Thermodynamics — Real Gas — Joule–Thomson Effect Trap

A gas follows the equation: P(V − b) = RT  (b > 0)

For this gas, the Joule–Thomson coefficient (μJT) is:



📌 Answer + explanation tomorrow (pinned).
❓ Doubts? Ask below 👇
🎥 Want a full video? Tell me!

2 weeks ago | [YT] | 0