(A) 150oC to 250oC
(B) 250oC to 450oC
(C) 500oC to 700oC
(D) 700oC to 900oC

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(A) 150oC to 250oC
(B) 250oC to 450oC
(C) 500oC to 700oC
(D) 700oC to 900oC
(A) Resin
(B) NH4CL
(C) Borax
(D) Soft iron
(A) Joining plastic sheets
(B) Hard soldering using brass spelter
(C) Casing in brass
(D) Makeing steel look like brass
(A) Increase fluidity of solder metal
(B) Feel up gaps left in a bad joint
(C) Carbon steel
(D) Prevent oxides forming
(A) Apply high pressure at edge
(B) Retain heat
(C) Retain solder
(D) Forge welding
(A) Soldering iron
(B) Induction furnace
(C) Electric resistance method
(D) Any of the above
(A) Brass
(B) Tin
(C) Steel
(D) Copper
(A) 40oC to 100oC
(B) 180oC to 250oC
(C) 300oC to 500oC
(D) 600oC to 900oC
(A) 10 to 15%
(B) 15 to 20%
(C) 20 to 30%
(D) 30 to 40%
(A) horizontally
(B) vertically
(C) in the parallel direction
(D) in all directions