3936: Robert Webster is known for his work associated with which one of the following ?
(a) Influenza virus
(b) HIV/AIDS
(c) Cardiology
(d) Alzheimer
3937: Which one of the following ports handled the north Indian trade during the Gupta period ?
(a) Tamralipti
(b) Broach
(c) Kalyan
(d) Cambray
3938: In an examination, every candidate took Physics or Mathematics or both 65.8% took Physics and 50.2% took Mathematics. The total number of candidates was 2000. How many took both Mathematics and Physics ?
(a) 750
(b) 700
(c) 550
(d) 500
3939: At which one of the following places do two important rivers of India originate, while one of them flows towards north and merges with another important river flowing towards Bay of Bengal, the other one flows towards Arabian Sea?
(a) Mahabaleshwar
(b) Badrinath
(c) Amarkantak
(d) Nasik
3940: With whose permission did the English set up their first factory in Surat?
(a) Akbar
(b) Jahangir
(c) Shahjahan
(d) Aurangzeb