भर्तृहरि द्वारा रचित किन तीन कृतियों को संयुक्त रूप से 'शतकत्रय' कहा जाता है?

Who among the following founded the 'Forward Bloc'?

Which of the following statements regarding the Harappan Civilization is NOT correct?

Which ruler is generally credited with unifying much of Northern India under a single empire for the first time?