General Science
According to Avogadro's Hypothesis, the smallest particle of an element or a compound, that can exist independently, is called:

An atom
A molecule
A cation
An anion

ANSWER DOWNLOAD EXAMIANS APP

General Science
The dark lines in the solar spectrum are due to

Destructive interference between waves of certain definite wavelengths.
Absorption of corresponding wavelengths by the prism used in the photograph.
Absence of corresponding wavelengths from the light emitted by the core of the sun.
Absorption of corresponding wavelengths by the outer layers of the sun.

ANSWER DOWNLOAD EXAMIANS APP