In 1985 the physicist Wilhelm Rontgen discovered X-rays, the "X" signifying their unknown origin.He later found that the rays could pass through flesh and by using photographic plates could make images of bones inside the body.
Who among the following scientists invented Kevlar?
Which does NOT belong to this group?
_____ was the first host country of the FIFA (Federation Internationale de Football Association) World Cup.
Humankind’s oldest mammal ancestor named Durlstotherim newmani has been discovered in ______.
In the following question, select the missing number from the given series.
97, 91, 79, 61, 37, ?
Which of the numbers given below is NOT rational?
............. is an alkali metal.
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