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Kindly answer the questions in the box mentioned below:

1. Which type of cleaning solvent used before soldering or brazing of pipes?

A Flux

B Soap

C Resin

D Washing soda


2 Which method of soldering used for bulk production?

A Dip soldering

B Machine soldering

C Soldering with blow lamp

D Soldering with soldering iron

3 What is the practice shown in figure?

A Brazing

B Soldering

C Arc welding

D Gas welding


4 Which type of flux used for soldering stainless steel?

A Resin

B Tallow

C Phosphoric

D Zinc chloride


5 Which type of metal used for brazing refrigerant pipe


A Gold

B Brass

C Silver

D Copper