SCIENCE: The presence of which organic substance is revealed by Benedicts test?

Questions

Gen. Douglas MacArthur named commander-in-chief, UN forces in Korea.?

Leroy Deans awarded first Order of Purple Heart in Korea.?

Maj. Dale R. Buis and Master Sgt. Chester M. Ovnand first American soldiers to be killed during the Vietnam War.?

Sabra Starr finishes longest recorded belly dance (100 hrs).?

Pioneer-Venus 2 Multi-probe launched to Venus.?