Out of all the elastomers, natural rubber has the longest elongation
range & flexibility of the order of __________ percent.
(A) 1-1000
(B) 1000-1500
(C) 1500-2000
(D) 2000-2500
range & flexibility of the order of __________ percent.
(A) 1-1000
(B) 1000-1500
(C) 1500-2000
(D) 2000-2500