पार्किंसंस रोग से पीड़ित एक मरीज को निरंतर लेवोडोपा (Levodopa) थेरेपी दी जाती है। लेवोडोपा मस्तिष्क में किस न्यूरोट्रांसमीटर के स्तर को सीधे बढ़ाने के लिए एक अग्रदूत (precursor) के रूप में कार्य करता है?

Which of the following territories was annexed by Lord Dalhousie under the pretext of misgovernance, and not directly through the Doctrine of Lapse?

What was the primary stated reason for the Partition of Bengal in 1905 by Lord Curzon?

Which of the following events is considered the immediate trigger for the launch of the Non-Cooperation Movement by Mahatma Gandhi?