हवा में जलाने से पहले मैग्नीशियम रिबन को रेगमाल (सैंडपेपर) से रगड़ा जाता है ताकि किस पदार्थ की सुरक्षात्मक परत को हटाया जा सके?

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?