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GSSSB Supervisor Instructor Refrigeration and Air Conditioning Free Mock Test
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GSSSB Supervisor Instructor (Refrigeration and Air Conditioning) Syllabus 2026, Exam Pattern
GSSSB Supervisor Instructor (Refrigeration and Air Conditioning) Syllabus 2026, Exam Pattern, Exam Date 2026
Detail Information about GSSSB has published notification 2026 for the recruitment of Supervisor Instructor (Refrigeration and Air Conditioning Group) vacancies. Those Candidates who are Interested to the following vacancy and completed all Eligibility Criteria can read the Notification & Apply Online. In this page we provide the Complete Syllabus of this Recruitment with Latest Update Exam Pattern and the Exam Date also.
GSSSB Supervisor Instructor (Refrigeration and Air Conditioning) Syllabus - Overview
| Organization Name | Gujarat Subordinate Services Selection Board (GSSSB) |
| Post Name | Supervisor Instructor (Refrigeration and Air Conditioning) |
| Total Post | 29 |
| Application Mode | Online |
| Category | Syllabus and Exam Pattern |
| Official Website | gsssb.gujarat.gov.in |
GSSSB Supervisor Instructor (Refrigeration and Air Conditioning) Syllabus 2026
PART: A (90 MARKS)
(1) Reasoning & Data Interpretation (30 Marks)
1. Coding-Decoding
2. Blood Relation
3. Problem on Age and Height
4. Direction Knowledge
5. Clock and Calendar
6. Venn Diagram
7. Rank and Position
8. Arithmetic Progression
9. Logical Sequence of Words
10. Insert the missing Character
11. Word, Numerical and General Analogy
12. Picture Based General Logical Questions (Visual reasoning)
13. Probability
14. Data Interpretation (charts, graphs, tables) and Data Sufficiency
15. Symmetry
16. Mathematical Operations
17. Mathematical modeling
18. Proofs in Mathematics
19. Logical and Mathematical Analytical Ability
20. Statement and Prediction
Quantitative Aptitude (30 Questions, 30 Marks)
1. Number System
2. LCM and HCF
3. Percentage and Partnership
4. Profit-Loss
5. Simple and Compound Interest
6. Ratio and Proportion
7. Time and Work, Wages and chain rule
8. Time, Speed and Distance
9. Average, Mean, Mode and Median
10. Brackets and Expansions
11. Square and Square Roots, Cube and Cube Roots, Exponents
12. Polynomials and Factorisation
13. Pair of Linear Equations in Two Variables and Quadratic Equations
14. Area, Surface Area and Volume (Square, Rectangle, Triangle, Circle, Cube, Cuboid,
Cylinder, Cone, Hemisphere, Sphere)
15. Coordinate Geometry and Trigonometry
Constitution of India (10 Questions, 10 Marks)
1. Concept of Political Science
2. Preamble of the Constitution
3. Fundamental values of Democracy, Nationalism and Secularism, Right and Citizenship
4. Indian Constitution Framing and Characteristics
5. Fundamental Rights, Duties and Directive Principles of State Policy
6. Legislature, Executive and Judiciary in India at Union and State Level
7. Government at Local Level: Institutions of Local Self-Government
8. Nature of Party System in India
9. Elections in India
10. Indian Democracy: Challenges and Response
11. Development and Democracy
Current Affairs (10 Questions, 10 Marks) :
1. Current Events of State, National and International Importance
Comprehension (Gujarati {5 marks} & English {5 marks})
(10 Questions, 10 Marks) :
1. To Assess Comprehension, Interpretation and Inference Skills
A paragraph given with set of question on the basis of paragraph
or statement and assertion type question can be asked
2. Blood Relation
3. Problem on Age and Height
4. Direction Knowledge
5. Clock and Calendar
6. Venn Diagram
7. Rank and Position
8. Arithmetic Progression
9. Logical Sequence of Words
10. Insert the missing Character
11. Word, Numerical and General Analogy
12. Picture Based General Logical Questions (Visual reasoning)
13. Probability
14. Data Interpretation (charts, graphs, tables) and Data Sufficiency
15. Symmetry
16. Mathematical Operations
17. Mathematical modeling
18. Proofs in Mathematics
19. Logical and Mathematical Analytical Ability
20. Statement and Prediction
Quantitative Aptitude (30 Questions, 30 Marks)
1. Number System
2. LCM and HCF
3. Percentage and Partnership
4. Profit-Loss
5. Simple and Compound Interest
6. Ratio and Proportion
7. Time and Work, Wages and chain rule
8. Time, Speed and Distance
9. Average, Mean, Mode and Median
10. Brackets and Expansions
11. Square and Square Roots, Cube and Cube Roots, Exponents
12. Polynomials and Factorisation
13. Pair of Linear Equations in Two Variables and Quadratic Equations
14. Area, Surface Area and Volume (Square, Rectangle, Triangle, Circle, Cube, Cuboid,
Cylinder, Cone, Hemisphere, Sphere)
15. Coordinate Geometry and Trigonometry
Constitution of India (10 Questions, 10 Marks)
1. Concept of Political Science
2. Preamble of the Constitution
3. Fundamental values of Democracy, Nationalism and Secularism, Right and Citizenship
4. Indian Constitution Framing and Characteristics
5. Fundamental Rights, Duties and Directive Principles of State Policy
6. Legislature, Executive and Judiciary in India at Union and State Level
7. Government at Local Level: Institutions of Local Self-Government
8. Nature of Party System in India
9. Elections in India
10. Indian Democracy: Challenges and Response
11. Development and Democracy
Current Affairs (10 Questions, 10 Marks) :
1. Current Events of State, National and International Importance
Comprehension (Gujarati {5 marks} & English {5 marks})
(10 Questions, 10 Marks) :
1. To Assess Comprehension, Interpretation and Inference Skills
A paragraph given with set of question on the basis of paragraph
or statement and assertion type question can be asked
PART: B (120 MARKS)
Questions and Its Applications related to Educational Qualification (120 Questions, 120 Marks)
1. Introduction of refrigeration: (10 Questions, 10, Marks) :
Refrigeration, Heat load, Need for thermal insulation, Refrigerating
agent, Development of refrigeration, Unit of refrigeration, Heat
pump, Refrigeration tools and basic refrigeration practice.
2. Refrigerants: (15 Questions, 15, Marks) :
Introduction, Development of refrigerants, Classification of
refrigerants, Designation of refrigerants (numbering of
refrigerants), Requirements for selection of refrigerants, Safety
procedure, Common refrigerants, New refrigerants, Secondary
refrigerants, Future Industrial refrigerants, Role of specific heat on
selection of refrigerant.
3. Vapour compression system: (15 Questions, 15, Marks) :
Mechanical refrigeration, Chemical agent refrigeration system,
Temperature entropy diagram and its reading, Wet and Dry
compression, Pressure Enthalpy Diagram, Reading p-h Chart,
Standard Rating Cycle, Co-efficient of Performance (C.O.P.) and
Energy Efficiency Ratio (E.E.R.), Heat of compression, Work of
compression and the heat of rejection, Factors affecting the
performance of Vapour Compression System, Comparison of
theoretical Vapour Compression Cycle with Carnot Cycle,
Departure from theoretical Vapour Compression Cycle.
4. Absorption system: (10 Questions, 10, Marks) :
Introduction, Development, Basic terminology, Benefits of
Absorption Systems, Refrigerant Absorber Pairs, Required system
characteristics, Matching heat sources, Cooling loads and Heat
sinks, Heat recovery, Desirable properties of Absorption System
Refrigerant and Absorber, Simple-Ammonia-Absorption System,
Solution Concentration Levels, Practical Aqua-NH system,
Influence of Solvent and Solvent Refrigerant Combination, Analysis
of Aqua-NH Refrigeration System, Comparison of Vapour
Compression and Vapour Absorption System, Lithium Bromide
Absorption System.
5. Component of Refrigeration system: (15 Questions, 15, Marks) :
Refrigeration Compressors, Types of the Compressor, Application
of various Compressors, Classification of Refrigeration
Compressors according to the arrangement of Motor, Electric
Motor for Hermetic Compressor, Starting and running Capacitor,
Compressor controls, The minimum compression work and
indicator diagram, Compressor efficiency and the C.O.P.,
Compressor Performance, Sub cooling and Heat rejection,
Condensers, Function, Purpose, Operation, Types of Condensers,
the condenser load, Heat rejection Factor or Heat rejection ratio,
Condenser Capacity, Receiver, Expansion device, Types of
expansion device, Evaporators, Operation, Types of Evaporators,
Evaporator capacity, the effect of air quantity on evaporator
capacity, Performance and ratings.
6. Psychrometry & Psychrometric chart: (15 Questions, 15, Marks) :
Properties of Air, Water vapour in the air, Relationship between
pressure of air and pressure of water vapour in the atmosphere,
Moisture content of air, Humidity, Temperatures, Dew Point and
Wet bulb depression, Enthalpy of moist air, Adiabatic saturation of
air, Relationship between Humidity Ratio and Dry Bulb and Wet
Bulb temperatures, Specific volume of moist air, Specific heat of
moist air, Thermodynamic Wet Bulb Temperature or Adiabatic
Saturation Temperature, Humidity measuring instruments,
Psychrometric Chart, Plotting of Psychrometric Chart,
Psychrometric processes, Sensible Heating and Cooling, Heating
with humidification, Cooling with dehumidification, Constant R.H.
process, Adiabatic Cooling or Cooling with Constant Enthalpy or
Evaporative Cooling, Adiabatic chemical dehumidification, Contact
factor and Bypass factor (BF or BPF).
7. Residential & Commercial refrigeration: (15 Questions, 15, Marks) :
Definition, Primary function, Secondary function, Preservation of
food by Refrigeration, Optimum conditions for fresh food
preservation, Advantages of Refrigerated and frozen food,
Working cycles, Design trends affecting component selection,
Advantages of Sealed Unit over the Open Unit, Types of
refrigerators, Refrigerator cabinet, Domestic Refrigerator
Construction, Defrosting in a Domestic Refrigerator, Refrigerant
overcharge and shortage in a system, Load analysis of Domestic
Refrigerator, Requirements of commercial refrigeration
equipment, Construction of commercial cabinet, Types of
commercial cabinets, Cabinet construction, Simple system versus
combined systems, Water Cooler, Bottle Cooler, Cooling tower, Car
A.C., Maintenance and Servicing of Refrigeration Equipment,
Energy efficiency and optimization techniques, Troubleshooting
common issues in refrigeration systems.
8. Refrigeration piping, Accessories and Control: (5 Questions, 5, Marks) :
Introduction, Basic principles for Piping Systems, Functions of the
Piping System, Application consideration, Code requirements,
Piping material, Design considerations, Service limitations,
Expansion of Piping, Supports and anchors, Vibration isolation,
Insulating refrigerant pipe lines, Pipe joints and fittings, Refrigerant
line velocities, Pressure drop consideration, Line capacities, Water
piping, Design procedure for water piping, Piping layout,
Refrigeration accessories and valves.
9. Commissioning and refrigeration plant: (10 Questions, 10, Marks) :
Sources of Moisture, Effects of Moisture, Drying methods,
Desiccants, Driers, Dehydration, Evacuation, Checking for leakage,
Plant commissioning, testing of the system on commissioning
questions.
10. Air and human comfort: (10 Questions, 10, Marks) :
Air temperature and human health, Body thermo-regulation, Body
temperature regulations, Steady State Energy Balance,
Environmental influences on comfort, Ventilation requirements,
Effective temperature, Comfort Chart, Factors affecting or
Governing Effective Temperature Exercise.
11. Current Trends and Recent Advancements in the Above Fields
1. Introduction of refrigeration: (10 Questions, 10, Marks) :
Refrigeration, Heat load, Need for thermal insulation, Refrigerating
agent, Development of refrigeration, Unit of refrigeration, Heat
pump, Refrigeration tools and basic refrigeration practice.
2. Refrigerants: (15 Questions, 15, Marks) :
Introduction, Development of refrigerants, Classification of
refrigerants, Designation of refrigerants (numbering of
refrigerants), Requirements for selection of refrigerants, Safety
procedure, Common refrigerants, New refrigerants, Secondary
refrigerants, Future Industrial refrigerants, Role of specific heat on
selection of refrigerant.
3. Vapour compression system: (15 Questions, 15, Marks) :
Mechanical refrigeration, Chemical agent refrigeration system,
Temperature entropy diagram and its reading, Wet and Dry
compression, Pressure Enthalpy Diagram, Reading p-h Chart,
Standard Rating Cycle, Co-efficient of Performance (C.O.P.) and
Energy Efficiency Ratio (E.E.R.), Heat of compression, Work of
compression and the heat of rejection, Factors affecting the
performance of Vapour Compression System, Comparison of
theoretical Vapour Compression Cycle with Carnot Cycle,
Departure from theoretical Vapour Compression Cycle.
4. Absorption system: (10 Questions, 10, Marks) :
Introduction, Development, Basic terminology, Benefits of
Absorption Systems, Refrigerant Absorber Pairs, Required system
characteristics, Matching heat sources, Cooling loads and Heat
sinks, Heat recovery, Desirable properties of Absorption System
Refrigerant and Absorber, Simple-Ammonia-Absorption System,
Solution Concentration Levels, Practical Aqua-NH system,
Influence of Solvent and Solvent Refrigerant Combination, Analysis
of Aqua-NH Refrigeration System, Comparison of Vapour
Compression and Vapour Absorption System, Lithium Bromide
Absorption System.
5. Component of Refrigeration system: (15 Questions, 15, Marks) :
Refrigeration Compressors, Types of the Compressor, Application
of various Compressors, Classification of Refrigeration
Compressors according to the arrangement of Motor, Electric
Motor for Hermetic Compressor, Starting and running Capacitor,
Compressor controls, The minimum compression work and
indicator diagram, Compressor efficiency and the C.O.P.,
Compressor Performance, Sub cooling and Heat rejection,
Condensers, Function, Purpose, Operation, Types of Condensers,
the condenser load, Heat rejection Factor or Heat rejection ratio,
Condenser Capacity, Receiver, Expansion device, Types of
expansion device, Evaporators, Operation, Types of Evaporators,
Evaporator capacity, the effect of air quantity on evaporator
capacity, Performance and ratings.
6. Psychrometry & Psychrometric chart: (15 Questions, 15, Marks) :
Properties of Air, Water vapour in the air, Relationship between
pressure of air and pressure of water vapour in the atmosphere,
Moisture content of air, Humidity, Temperatures, Dew Point and
Wet bulb depression, Enthalpy of moist air, Adiabatic saturation of
air, Relationship between Humidity Ratio and Dry Bulb and Wet
Bulb temperatures, Specific volume of moist air, Specific heat of
moist air, Thermodynamic Wet Bulb Temperature or Adiabatic
Saturation Temperature, Humidity measuring instruments,
Psychrometric Chart, Plotting of Psychrometric Chart,
Psychrometric processes, Sensible Heating and Cooling, Heating
with humidification, Cooling with dehumidification, Constant R.H.
process, Adiabatic Cooling or Cooling with Constant Enthalpy or
Evaporative Cooling, Adiabatic chemical dehumidification, Contact
factor and Bypass factor (BF or BPF).
7. Residential & Commercial refrigeration: (15 Questions, 15, Marks) :
Definition, Primary function, Secondary function, Preservation of
food by Refrigeration, Optimum conditions for fresh food
preservation, Advantages of Refrigerated and frozen food,
Working cycles, Design trends affecting component selection,
Advantages of Sealed Unit over the Open Unit, Types of
refrigerators, Refrigerator cabinet, Domestic Refrigerator
Construction, Defrosting in a Domestic Refrigerator, Refrigerant
overcharge and shortage in a system, Load analysis of Domestic
Refrigerator, Requirements of commercial refrigeration
equipment, Construction of commercial cabinet, Types of
commercial cabinets, Cabinet construction, Simple system versus
combined systems, Water Cooler, Bottle Cooler, Cooling tower, Car
A.C., Maintenance and Servicing of Refrigeration Equipment,
Energy efficiency and optimization techniques, Troubleshooting
common issues in refrigeration systems.
8. Refrigeration piping, Accessories and Control: (5 Questions, 5, Marks) :
Introduction, Basic principles for Piping Systems, Functions of the
Piping System, Application consideration, Code requirements,
Piping material, Design considerations, Service limitations,
Expansion of Piping, Supports and anchors, Vibration isolation,
Insulating refrigerant pipe lines, Pipe joints and fittings, Refrigerant
line velocities, Pressure drop consideration, Line capacities, Water
piping, Design procedure for water piping, Piping layout,
Refrigeration accessories and valves.
9. Commissioning and refrigeration plant: (10 Questions, 10, Marks) :
Sources of Moisture, Effects of Moisture, Drying methods,
Desiccants, Driers, Dehydration, Evacuation, Checking for leakage,
Plant commissioning, testing of the system on commissioning
questions.
10. Air and human comfort: (10 Questions, 10, Marks) :
Air temperature and human health, Body thermo-regulation, Body
temperature regulations, Steady State Energy Balance,
Environmental influences on comfort, Ventilation requirements,
Effective temperature, Comfort Chart, Factors affecting or
Governing Effective Temperature Exercise.
11. Current Trends and Recent Advancements in the Above Fields
GSSSB Supervisor Instructor (Refrigeration and Air Conditioning) Exam Pattern 2026
Duration : 180 Minutes
Negative Marking : 0.25
Negative Marking : 0.25
| S.No. | Subject | No.of Question | Mark |
| Part A | Reasoning & Data Interpretation | 30 | 30 |
| Quantitative Aptitude | 30 | 30 | |
| Constitution of India, Current Affairs, Comprehension (Gujarati {5 marks} & English {5 marks}) | 30 | 30 | |
| Part B | Technical Subject | 120 | 120 |
| Total | 210 | 210 |
Exam Date : Notified Soon
Starting Date of Application Form : 20th July 2026
Last Date of Application Form : 03rd August 2026
Total Post : 29
Starting Date of Application Form : 20th July 2026
Last Date of Application Form : 03rd August 2026
Total Post : 29
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