Railways Technical Ability Metal Forming, Casting and Cutting Question Bank Metal Casting

  • question_answer Which of the following pattern-materials are used in Precision Casting?
    1. Plaster of Paris
    2. Plastics
    3. Anodized aluminium alloy
    4. Frozen mercury
    Select the correct answer using the codes given below:
    Codes:

    A) 1 and 2            

    B) 2 and 4

    C) 3 and 4            

    D) 1 and 3

    Correct Answer: A


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