pak101
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Subject : Win free JAZZ Card! General Knowledge Quiz (2-July-2014) (closed)
Brass gets discoloured in air because of the presence of which of the following gases in air? A. Oxygen B. Hydrogen sulphide C. Carbon dioxide D. Nitrogen
Terms and Conditions: * You must reply here to participate in the quiz to Win Jazz Card of Rs. 100. * TWO Winner(s) will be selected randomly from users who reply in this quiz with correct answer. * Winner(s) will be announced on Wednesday 9th July 2014. * Name of the Winner(s) will be posted in this topic only. * Only 1 answer per user is acceptable, multiple answers will lead to disqualification.
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