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Latest RMC Sub Officer Exam Question (Objective Questions), MCQ in English

Subjects : Technical Knowledge (Fire), General Awareness, Arithmetic & Reasoning, General English

Question Bank RMC Sub Officer Exam (Fire) - English
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Technical Knowledge (Fire)

Question 1Single Answer
Fire is defined as?
  1. A
    Physical change of matter
  2. B
    Rapid oxidation producing heat and light
  3. C
    Chemical decomposition without heat
  4. D
    Nuclear reaction
Question 2Single Answer
Combustion is a process of:
  1. A
    Reduction
  2. B
    Sublimation
  3. C
    Neutralization
  4. D
    Oxidation
Question 3Single Answer
Which element is not part of the fire triangle?
  1. A
    Heat
  2. B
    Nitrogen
  3. C
    Fuel
  4. D
    Oxygen
Question 4Single Answer
Fire tetrahedron includes which additional element?
  1. A
    Carbon
  2. B
    Heat
  3. C
    Smoke
  4. D
    Chemical chain reaction
Question 5Single Answer
Removal of oxygen extinguishes fire by:
  1. A
    Cooling
  2. B
    Smothering
  3. C
    Starvation
  4. D
    Inhibition
Question 6Single Answer
Which method breaks the chemical chain reaction?
  1. A
    Cooling
  2. B
    Smothering
  3. C
    Starvation
  4. D
    Inhibition
Question 7Single Answer
Conduction is heat transfer through:
  1. A
    Liquids only
  2. B
    Gases only
  3. C
    Solids
  4. D
    Vacuum
Question 8Single Answer
Heat transfer by movement of fluids is called:
  1. A
    Convection
  2. B
    Conduction
  3. C
    Radiation
  4. D
    Insulation
Question 9Single Answer
Radiation transfers heat through:
  1. A
    Contact
  2. B
    Air currents
  3. C
    Electromagnetic waves
  4. D
    Liquids only
Question 10Single Answer
Flash point is the temperature at which a substance:
  1. A
    Burns continuously
  2. B
    Melts
  3. C
    Auto-ignites
  4. D
    Produces vapors that ignite momentarily
Question 11Single Answer
Fire point is the temperature at which a substance:
  1. A
    Gives off vapors
  2. B
    Ignites momentarily
  3. C
    Burns continuously
  4. D
    Decomposes
Question 12Single Answer
Ignition temperature is the temperature at which:
  1. A
    Fuel melts
  2. B
    Vapors form
  3. C
    Substance catches fire
  4. D
    Smoke forms
Question 13Single Answer
Auto-ignition occurs without:
  1. A
    Fuel
  2. B
    Oxygen
  3. C
    External flame or spark
  4. D
    Heat
Question 14Single Answer
Which stage of fire has slow growth?
  1. A
    Fully developed stage
  2. B
    Decay stage
  3. C
    Incipient stage
  4. D
    Flashover stage
Question 15Single Answer
Fire growth stage follows:
  1. A
    Decay stage
  2. B
    Incipient stage
  3. C
    Fully developed stage
  4. D
    Smoldering stage
Question 16Single Answer
Flashover occurs during:
  1. A
    Incipient stage
  2. B
    Decay stage
  3. C
    Growth stage
  4. D
    Smoldering
Question 17Single Answer
Fully developed fire stage is characterized by:
  1. A
    Low temperature
  2. B
    Oxygen rich condition
  3. C
    No flames
  4. D
    Maximum heat release
Question 18Single Answer
Decay stage occurs due to:
  1. A
    Excess fuel
  2. B
    High ventilation
  3. C
    Lack of oxygen
  4. D
    Cooling
Question 19Single Answer
Smoldering combustion occurs without:
  1. A
    Fuel
  2. B
    Heat
  3. C
    Visible flame
  4. D
    Smoke
Question 20Single Answer
Which heat transfer is most dangerous to firefighters?
  1. A
    Conduction
  2. B
    Convection
  3. C
    Reflection
  4. D
    Radiation
Question 21Single Answer
Fire load refers to:
  1. A
    Weight of fire equipment
  2. B
    Temperature of fire
  3. C
    Quantity of combustible material
  4. D
    Speed of fire spread
Question 22Single Answer
High fire load increases:
  1. A
    Fire risk
  2. B
    Safety
  3. C
    Cooling effect
  4. D
    Oxygen level
Question 23Single Answer
Class A fires involve:
  1. A
    Ordinary combustibles
  2. B
    Electrical equipment
  3. C
    Flammable liquids
  4. D
    Metals
Question 24Single Answer
Which fuel burns with glowing combustion?
  1. A
    LPG
  2. B
    Gasoline
  3. C
    Wood
  4. D
    Acetylene
Question 25Single Answer
Pyrolysis is:
  1. A
    Burning of gases
  2. B
    Cooling of fuel
  3. C
    Chemical decomposition due to heat
  4. D
    Heat transfer
Question 26Single Answer
Fire spread upward is faster due to:
  1. A
    Conduction
  2. B
    Radiation
  3. C
    Convection
  4. D
    Insulation
Question 27Single Answer
Which condition favors rapid fire growth?
  1. A
    Low oxygen
  2. B
    Adequate ventilation
  3. C
    High humidity
  4. D
    Low temperature
Question 28Single Answer
Smoke primarily contains:
  1. A
    Pure oxygen
  2. B
    Water only
  3. C
    Nitrogen only
  4. D
    Combustion products
Question 29Single Answer
Toxic gas commonly produced in fires is:
  1. A
    Oxygen
  2. B
    Nitrogen
  3. C
    Hydrogen
  4. D
    Carbon monoxide
Question 30Single Answer
Flame temperature depends on:
  1. A
    Fuel type
  2. B
    Oxygen supply
  3. C
    All of the above
  4. D
    Combustion efficiency
Question 31Single Answer
Cooling method of fire extinguishment removes:
  1. A
    Oxygen
  2. B
    Fuel
  3. C
    Heat
  4. D
    Chain reaction
Question 32Single Answer
Starvation method removes:
  1. A
    Heat
  2. B
    Oxygen
  3. C
    Fuel
  4. D
    Smoke
Question 33Single Answer
Which factor does not affect combustion?
  1. A
    Fuel
  2. B
    Sound
  3. C
    Oxygen
  4. D
    Heat
Question 34Single Answer
Flashover temperature is approximately:
  1. A
    500–600 C
  2. B
    300 C
  3. C
    100 C
  4. D
    1000 C
Question 35Single Answer
Fire intensity is measured by:
  1. A
    Flame color
  2. B
    Sound
  3. C
    Smoke density
  4. D
    Heat release rate
Question 36Single Answer
Incipient stage fires are easiest to control because:
  1. A
    High temperature
  2. B
    High smoke
  3. C
    Low heat release
  4. D
    Oxygen deficiency
Question 37Single Answer
Which combustion is slow and flameless?
  1. A
    Rapid combustion
  2. B
    Smoldering
  3. C
    Explosion
  4. D
    Detonation
Question 38Single Answer
Fire tetrahedron concept improved fire control by adding:
  1. A
    Heat removal
  2. B
    Fuel removal
  3. C
    Oxygen control
  4. D
    Chemical inhibition
Question 39Single Answer
Which gas supports combustion?
  1. A
    Carbon dioxide
  2. B
    Oxygen
  3. C
    Nitrogen
  4. D
    Helium
Question 40Single Answer
Minimum oxygen level required for combustion is about:
  1. A
    5%
  2. B
    16%
  3. C
    10%
  4. D
    25%
Question 41Single Answer
Which stage produces maximum smoke?
  1. A
    Incipient
  2. B
    Growth
  3. C
    Fully developed
  4. D
    Decay
Question 42Single Answer
Backdraft occurs due to:
  1. A
    Excess oxygen
  2. B
    Fuel shortage
  3. C
    Cooling
  4. D
    Sudden introduction of oxygen
Question 43Single Answer
Rollover refers to:
  1. A
    Flame spread at ceiling level
  2. B
    Floor collapse
  3. C
    Explosion
  4. D
    Smoke cooling
Question 44Single Answer
Which material has high ignition temperature?
  1. A
    Iron
  2. B
    Wood
  3. C
    Petrol
  4. D
    Paper
Question 45Single Answer
Which heat transfer requires no medium?
  1. A
    Conduction
  2. B
    Convection
  3. C
    Radiation
  4. D
    Evaporation
Question 46Single Answer
Fire triangle theory was proposed to explain:
  1. A
    Fire extinction
  2. B
    Fire prevention
  3. C
    Fire causes
  4. D
    Fire behavior
Question 47Single Answer
Fire tetrahedron is mainly useful for:
  1. A
    Class A fires
  2. B
    Modern fire suppression
  3. C
    Chemical fires
  4. D
    Electrical fires
Question 48Single Answer
Which process produces flammable vapors from solids?
  1. A
    Oxidation
  2. B
    Pyrolysis
  3. C
    Condensation
  4. D
    Reduction
Question 49Single Answer
Which stage is most dangerous for occupants?
  1. A
    Incipient
  2. B
    Growth
  3. C
    Fully developed
  4. D
    All stages
Question 50Single Answer
Fire spread between buildings mainly occurs due to:
  1. A
    Conduction
  2. B
    Convection
  3. C
    Radiation
  4. D
    Insulation
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