Which of the following activities results in the formation of oleum in the manufacture of sulphuric acid by the contact process?
- ABy adding sodium sulphite and $SO_2$ in water
- BBy passing $SO_2$ gas into dil. $H_2SO_4$
- CPassing $SO_2$ gas through $NaOH$ solution
- DBy absorbing $SO_3$ gas in conc. $H_2SO_4$
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The large difference between the melting and boiling points of oxygen and sulphur may be explained on the basis of
Assertion : Both rhombic and monoclinic sulphur exist as $S_8$ but oxygen exists as $O_2$.
Reason : Oxygen forms $p\pi-p\pi$ multiple bond due to small size and small bond length but $p\pi-p\pi$ bonding is not possible in sulphur.
Reason : Oxygen forms $p\pi-p\pi$ multiple bond due to small size and small bond length but $p\pi-p\pi$ bonding is not possible in sulphur.
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