मानव द्वारा छोड़ी गई हवा (उच्छ्वसित वायु) में ऑक्सीजन का अनुमानित प्रतिशत कितना होता 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?

Who led the Non-Cooperation Movement in India?