Related Questions

The Refrigerant 'FREON' is
A Calcium Tetra Fluoride
B Difluoro Dichloro Methane
C Fluorspar and Felspar
D Hydrofluosilicic Acid
The material of pipe lines for a system using Freon as a refrigerant should be
A Brass
B Copper
C Steel
D Aluminium
The colour of the flame of halide torch, in case of leakage of Freon refrigerant, will change to
A Bright green
B Yellow
C Red
D Orange
Freon group of refrigerants are
A Inflammable
B Toxic
C Non-inflammable and toxic
D Nontoxic and non-inflammable
The Freon group of refrigerants are
A Halocarbon refrigerants
B Zoetrope refrigerants
C Inorganic refrigerants
D Hydrocarbon refrigerants
Moisture in Freon refrigeration system causes
A Ineffective refrigeration
B High power consumption
C Freezing automatic regulating valve
D Corrosion of whole system
The leaks in a refrigeration system using Freon are detected by
A Halide torch which on detection produces greenish flame lighting
B Sulphur sticks which on detection gives white smoke
C Using reagents
D Smelling
The leakage in a refrigeration system using Freon is detected by
A Halide torch
B Sulphur sticks
C Soap and water
D All of these
Calgon used in water treatment is chemically
A Sodium phosphate
B Sodium hexametaphosphate
C Calcium phosphate
D Tricresyl phosphate
Dense soda ash used in the manufacture of glass, is chemically represented by
A Na2CO3
B Na2CO3.10H2O
C Na2CO3.H2O
D Na2HCO3

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