646: Whom did Mahesh Bhupati and Max Mirnyi beat in the US Open men's doubles tennis championship in the year 2002 to win the title?
(a) Wayne Black and Kevin Ullyett
(b) Mike Bryan and Bob Bryan
(c) Jonas Bjorkman and Todd Woodbridge
(d) Jiri Novak and Radek Stepanek
647: Identical twins are born when:
(a) Two sperms fertilise one ovum
(b) Two sperms fertilise two ovums simultaneously
(c) One sperm fertilises the ovum and zygote divides into two separate cells developing independently
(d) One sperm fertilises two ovums
648: The Vitamin containing cobalt is
(a) B1
(b) B2
(c) B6
(d) B12
649: Salts of which of the following elements provide colours to fireworks?
(a) Zinc and sulphur
(b) Potassium and mercury
(c) Strontium and barium
(d) Chromium and nickel
650: A World Summit with representation from all the countries will be held in Johannesburg in September 2002 on the subject of
(a) AIDS control
(b) Global terrorism
(c) Human rights
(d) Sustainable development