(A) Cope

(B) Cheek

   (C) Drag

(D) Flask bottom

(A) Cope

   (B) Cheek

(C) Drag

(D) Flask-middle

(A) Tinplate

(B) Brass

   (C) Copper

(D) Aluminium

(A) Tin

   (B) Zinc

(C) Lead

(D) Silver

   (A) A joint is made between two parts by molten spelter

(B) The edges of the joint melt and run together

(C) Spelter forms an alloy with the flux

(D) Flux prevents the work from melting

(A) Mixture of boric acid,borax and wetting agent

(B) Boric acid,borax or fluoride with a wetting agent

   (C) Chlorides and fluorides mixed with water

(D) Any of the above