Basic General Knowledge
Recently lead free petrol was introduced in our country because

they cause less pollution
to reduce the cost of petrol
they are not needed now as anti-knock agents
they tower the efficiency of the engine

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Basic General Knowledge
National Anthem was first sung on

None of these
January 26, 1959 by the Government of India
December 27, 1911 during the Indian National Congress Session at Calcutta
January 24, 1950 by the Constituent Assembly of India

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