Question:-
Which of the following pairs are correctly matched ?
1. Pit moulding .... For large jobs
2. Investment moulding ..... lost wax process
3. Plaster moulding ..... mould prepared in gypsum
Option (A)
1, 2 and 3
Option (B)
1 and 2
Option(C)
1 and 3
Option(D)
2 and 3
Correct Option:
(A)
Question Solution:
Pit mould is used for large job and in investment casting wax is used and plaster of paris or Gypsum (CaSO4 nH2O) is extensively used in plaster mould casting
question-answer-faq-5167