Ques:- What was the first polyester fiber invented in 1941 called?
A. Terylene
B. Poplin
C. Terry cot
D. Rubia
Ques:- A train 100 meters long passes a platform 100 meters long in seconds. The speed of the train is
A. 36 km/hr
B. 52 km/hr
C. 72 km/hr
D. 92 km/hr