Q5 of 60 Page 28

Which of the following are correct structural isomers of butane?

The chemical formula of butane is C4H10. Structural formulae in other options (iii) and (iv) show only 8 hydrogen atoms. Isomers are molecules that contain the same number of atoms of the same elements but differ in structural arrangement and properties. Isomers have same chemical formula.

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3

Which of the following statements are usually correct for carbon compounds? These

(i) are good conductors of electricity


(ii) are poor conductors of electricity


(iii) have strong forces of attraction between their molecules


(iv) do not have strong forces of attraction between their molecules

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Buckminsterfullerene is an allotropic form of

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