अम्लता को कम करने के अलावा, अम्लीय मिट्टी में चूना डालने (लाइमिंग) से मुख्य रूप से पौधों को कौन से पोषक तत्व प्राप्त होते हैं?

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?