MCQ
Which of the following is chiral?
- ACell phone
- BSpiral staircase
- CScissor
- ✓All of these
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$NO _{3}^{-}, H _{2} O _{2}, BF _{3}, PCl _{3}, XeF _{4},SF _{4}, XeO _{3}, PH _{4}^{+}, SO _{3},\left[ Al ( OH )_{4}\right]^{-}$
