MCQ
Which of the following alkyne on treatment with $H_2 (2\, mole)/ Pt$ gives an optically inactive compound ?
- ✓$3$ -Methyl- $1$ -pentyne
- B$4$ -Methyl- $1$ -hexyne
- C$3$ -Methyl- $1$ -heptyne
- DNone of the above

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$2s$ $2{p_x}$ $2{p_y}$ $2{p_z}$