Ques:- A train 300 m long crossed a platform 900 m long in 1 minutes 12 seconds. The speed of the train (in km/hr) is
A. 40
B. 50
C. 60
D. 70
Ques:- What was the first polyester fiber invented in 1941 called?
A. Terylene
B. Poplin
C. Terry cot
D. Rubia