Question

classify statements as describing type ia supernovae or type ii supernovae.
type ia
strong hydrogen lines in its spectrum
explosion occurs when the star attempts to fuse iron
occurs as a white dwarf reaches the chandrasekhar limit
type ii
forms from a giant star that is at the end of its life
occurs in white dwarf binary pairs
occurs when the core of a giant star collapses

Explanation:

Type Ia supernovae occur when a white - dwarf reaches the Chandrasekhar limit or in white - dwarf binary pairs. Type II supernovae form from a giant star at the end of its life and occur when the core of a giant star collapses. Type II supernovae have strong hydrogen lines in their spectrum and the explosion in a Type II occurs when the star attempts to fuse iron.

Answer:

Type Ia: explosion occurs when the star attempts to fuse iron, occurs as a white dwarf reaches the Chandrasekhar limit, occurs in white dwarf binary pairs
Type II: strong hydrogen lines in its spectrum, forms from a giant star that is at the end of its life, occurs when the core of a giant star collapses