What is one way to test weather an unknown solution is acidic or basic ?

Use indicators such as :

Indicator                   Color in acid          Color in alkali

methy lorange                red                           yellow

phenolphthalein           colorless                     pink

it was spontaneous.

"ain't i a woman? " is the name given to a speech, delivered extemporaneously, by sojourner truth, (1797–1883), born into slavery in new york state.sojourner truth' delivered her famous speech "ain't i a woman? " (which did not have a title at that moment) was given without any previous preparation. her dissertation took place at the women's convention in akron, ohio, in 1851.