HomeEngineeringThe light pen was developed in_________________? 188. The light pen was developed in_________________?By Admin / September 13, 2025 A. 1950 B. 1942 C. 1948 D. 1956 ✅ The correct answer is option A.
1. A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm². Leave a Comment / Basic Chemical Engineering MCQs, Chemical Engineering, Engineering / By Admin
2. Transformer cores are normally made from Leave a Comment / Basic Chemical Engineering MCQs, Chemical Engineering, Engineering / By Admin