The 'pulse' of the aquatic environment can be ascertained by measuring

Who amongst the following had called Rabindranath Tagore as THE GREAT SENTINEL?

A. Abul Kalam Azad

B. Mahatma Gandhi

C. Dr. Rajendra Prasad

D. Subhash Chandra Bose

Grand Central Terminal, Park Avenue, New York is the world's

A. highest railway station

B. longest railway station

C. largest railway station

D. None of the above

Entomology is the science that studies

A. The origin and history of technical and scientific terms

B. Behavior of human beings

C. Insects

D. The formation of rocks

E. None of these

Eritrea, which became the 182^nd member of the UN in 1993, is in the continent of

A. Africa

B. Australia

C. Europe

D. Asia

E. None of these