Which of the following statement(s) is (are) true about a compound that has a mo

Question

Which of the following statement(s) is (are) true about a compound that has a molecular ion peak in its mass spectrum at mass 69 and shows a prominent peak in its IR spectrum at 2250 cm^-1? The compound has a molecular mass of 70. The compound contains a C-O group. The compound contains a cyano or alkyne group Both (The compound has molecular mass of 70) and (The compound contains a C-O group) are true statements. Both (The compound has a molecular mass of 70) and (The compound contains a cyano or alkyne group) are true statements.

Explanation / Answer

Molecular ion peak at 69 in the mass spectrum

IR shows peak at 2250 cm-1

True statement regarding the said compound would thus be,

The compound contains a cyano or alkyne group

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