Where was the Special Olympics World Games 2019 inaugurated?

Dulmera in the Princely State of Bikaner was famous for which mineral?

Price theory is also known as     

The first fertilizer plant was set up at. 

What do plants, which grow in salt-rich soils, say?

The Mongols appeared for the first time on the banks of the Indus during the rule of

Who among the following presented the first budget (interim) of Independent India?

What was the basis of the grouping of test-items in Binet's scale?