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Which one of the following statements about the mass spectrum of CH3Br is correct?

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Which one of the following statements about the mass spectrum of CH3Br is correct? Answer: Last two peaks are of equal size at m/z values of 94 and 96

The correct statement is: The last two peaks are of equal size at m/z values of 94 and 96. This is due to the isotopic composition of bromine.

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This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.