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CBSE Notes 2011-2012

A. N,Q is called laughing gas B. NO, is acidic oxide

Multiple choice question

A. N,Q is called laughing gas
B. NO, is acidic oxide

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A' is right, 'B' is wrong

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Both 'A' and 'B' are right

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'A' is wrong, 'B' is right

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Both 'A' and 'B' are wrong