For the following questions answer them individually
Mac OS was introduced by
The Third Battle of Panipat was fought between :
Which company retained its top position in Interbrand’s list of the top 100 global brands in 2011 ?
What was the percentage contribution of service sector in GDP of Rajasthan in 2011 ?
Name the chess champion against whom Viswananthan Anand lost in 2014 World Chess Championship.