Indian Forest Service 2025 Chemical Engineering Paper II Question Paper PDF

Central Government Jobs Engineer 2025

  • Year 2025
  • Conducted By UPSC
  • Questions 8
  • Maximum Marks 200
  • Duration Three Hours
  • Languages English

Exam Details

Detail Information
Examination Indian Forest Service (Main) Examination
Year 2025
Conducting Body UPSC
Paper Chemical Engineering Paper - II
Subject Chemical Engineering
Duration Three Hours
Maximum Marks 200
Number of Questions 8
Question Type Mixed

This document contains the Chemical Engineering Paper II from the Indian Forest Service (Main) Examination 2025, conducted by UPSC. The paper consists of eight questions, with candidates required to attempt five, including compulsory questions 1 and 5. It covers various aspects of Chemical Engineering, with questions carrying equal marks. This paper is crucial for aspirants aiming to understand the exam's scope and difficulty level for the IFS Main examination.

Major Topics Covered

  • Chemical Engineering
  • Thermodynamics
  • Reaction Engineering
  • Mass Transfer
  • Heat Transfer
  • Process Control
  • Fluid Mechanics

Why This Paper is Important

  • Useful for Indian Forest Service (Main) Examination preparation
  • Helps understand the latest exam pattern
  • Useful for practice and self-assessment
  • Covers frequently asked General Studies topics
  • Helpful for analysing question trends

Related Resources

  • Indian Forest Service (Main) Examination 2024 Chemical Engineering Paper II
  • Indian Forest Service (Main) Examination 2025 Chemical Engineering Paper I
  • Engineering Services Examination 2025 Chemical Engineering Paper II
  • Indian Forest Service (Main) Examination 2025 Chemical Engineering Paper II Answer Key
  • Indian Forest Service (Main) Examination Chemical Engineering Syllabus
  • UPSC Chemical Engineering Syllabus
  • Indian Forest Service (Main) Examination Pattern
  • UPSC Exam Pattern

Instructions

  • There are EIGHT questions in all, out of which FIVE are to be attempted.
  • Out of the remaining SIX questions, THREE are to be attempted selecting at least ONE question from each of the two Sections A and B.
  • Attempts of questions shall be counted in sequential order.
  • Unless struck off, attempt of a question shall be counted even if attempted partly.
  • Any page or portion of the page left blank in the Question-cum-Answer Booklet must be clearly struck off.
  • The number of marks carried by a question/part is indicated against it.
  • Unless otherwise mentioned, symbols and notations have their usual standard meanings.
  • Assume suitable data, if necessary, and indicate the same clearly.
  • Neat sketches may be drawn, wherever required.
  • Answers must be written in ENGLISH only. qalarind.

Questions (page 2)

Section A

Q1. A mixture of hydrogen, nitrogen and carbon dioxide of 1000 mu00b3 volume at 423 K was found to have the partial pressures of gases in the ratio as given: p_{H2} : p_{N2} : p_{CO2} = 1 : 4 : 3. If the total pressure is 3 atm.; calculate: Use R = 0.082 mu00b3 atm./kmole u2013 K.

(a) the mole fraction of each gas

(b) the average molecular weight

(c) the weight percentage of these gases

(d) the weight of carbon dioxide present in kilograms

Section A

Q2. Explain the following :

(a) Recycle, Bypass and Purging operations

(b) Heat of reaction

Section A

Q3. For a reversible adiabatic process involving an ideal gas with constant Cp, the relationship between temperature and pressure is given by the expression:

(a) Determine the equivalent expression for an ideal gas with temperature-dependent specific heat, Cp = a + bT + cT2

Section A

Q4. Pasteurization is useful for the preservation of food material. Cow's milk is pasteurized if it is heated to 57^{circ}C for 40 minutes, but if it is heated to 77u00b0C, it only needs 0.25 minutes for the level of pasteurization. Find the activation energy of this process.

Section A

Q5. Define an "Autocatalytic reaction". Also, derive the formula :

(a) ln (\mathrmCR,/\,mathrmCR0)/(\mathrmCA,/\,mathrmCA0) = (\mathrmCA0 + \mathrmCR0) , \mathrmkt for autocatalytic reaction A + R \longrightarrow R + R. Notations have their usual meanings.

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Frequently asked questions

What is the exam name?

The exam name is Indian Forest Service (Main) Examination.

What is the year of this question paper?

The year of this question paper is 2025.

Who conducts the Indian Forest Service (Main) Examination?

The Indian Forest Service (Main) Examination is conducted by UPSC.

What is the subject of this paper?

The subject of this paper is Chemical Engineering.

What is the paper name/code?

The paper name is Chemical Engineering Paper - II, with the code DJSM-B-CHME.

How many questions are in this paper?

There are a total of eight questions in this paper.

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