A pipe contains oil of specific gravity 0.9. A differential mercury manometer connected at two points A and B shows a difference in mercury level of 15 cm. What is the difference in pressure between the two points? (Take acceleration due to gravity g = 9.81 m/s2, specific gravity of mercury = 13.6, and density of water = 1000 kg/m3)

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?