यदि बड़े दाब अंतर की संभावना हो, तो मैनोमीटर के आकार को नियंत्रित रखने के लिए उसमें ______ तरल पदार्थों का उपयोग किया जाता है।

The Dandi March, also known as the Salt Satyagraha, was led by which influential leader?

Which act formally granted independence to India, marking the end of British rule?

Who was the key figure in establishing the Indian National Congress?