पियाजे के कार्यों में संरक्षण (conservation) की कौन-सी मूल अवधारणा विशेष रूप से आकार में परिवर्तनों के बावजूद किसी पदार्थ की मौजूद मात्रा पर केंद्रित होती है?

Which of the following events is considered a major turning point that fueled Indian nationalism during British rule due to its brutal nature and widespread condemnation?

Which of the following events is considered the first major peasant uprising against the British in India?