Who presented Kohinoor diamond to Shah Jahan

The famous diamond ‘Kohinoor’ was presented to Shah Jahan by –

The motive behind Shah Jahan’s Balkh campaign was to :

Who among the following was the governor of Deccan for the major part of Shah Jahan’s Reign?

Who among the following historians declared the regime of Shah Jahan to be the Golden Era of the Mughal Period?

Who is the author of Shahjahannama?