Welding - Welding objective questions and answers

26. The following flux is used for brazing brass, copper, bronze and low carbon steels.......

   A.Mixture of boric acid, borux and a wetting agent

   B.Boric acid, borax or fluoride with a wetting agent

   C.Chlorides and fluorides mixed with water

   D.All of the above

27. The following flux is used for brazing cast iron.......

   A.Mixture of boric acid, borux and a wetting agent

   B.Boric acid, borax or fluoride with a wetting agent

   C.Chlorides and fluorides mixed with water

   D.All of the above

28. Oxygen to acetyline ratio in case of oxidising flame is.......

   A.1:1

   B.1.2:1

   C.1.5:1

   D.2:1

29. Acetylene gas is generated form of......

   A.Carbon

   B.Calcium

   C.Calcium carbonate

   D.Calcium carbide

30. Acetelyne is stored in gas cylinder in.......

   A.In gaseous form

   B.In liquid form

   C.In solid form

   D.Under high pressure

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