engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Production Engineering (Manufacturing) Metal Casting
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:
1
1 and 2
2
2 and 4
3
3 and 4
4
1 and 3