पक्षी निश्चित समय पर अपने पुराने पंख गिरा देते हैं और नए पंख उगाते हैं। इस प्रक्रिया को क्या 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?