641. What will be best colours for a Sun umbrella?
White on top and black on inside
642. By whom was the "Tahglq-i-Hind", a famous literary work, written?
Alberuni
643. Plato was the student of?
Socrates
644. Which cold and dense air blowing down the mountain slope during the night?
Katabatic wind
645. Pollination takes place with the help of bird; what is called?
Ornithophily
646. Dr. M. S. Swaminathan distinguished himself in which field?
Agriculture
647. First Indian to swim across the English Channel?
(Men) Mihir Sen; (Women) Mrs.Arati Gupta
648. If you wish to visit Golconda Fort; you will have to go to which state?
Karnataka
649. Name the first known Personal Computer?
The Altair (1975)
650. Who is the author of “A Train to Pakistan”?
Khushwant Singh