Which of the following green house gases has the greatest heat-trapping ability?
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The molecular formula of Propane is
Who invented first working laser?
The Ministry of Labour and Employment, in January 2018, announced how many persons for Prime Minister's Shram Awards for the year 2016?
The Agra fort was built by ___________.
Shortest day in the Northern hemisphere is _______.
If 24x2=84, and 32x3=69, then 13x3=?
Select the answer figure in which the question figure is hidden/embedded from the given options?