Question
Chemistry Question on Aldehydes, Ketones and Carboxylic Acids
Formalin is an aqueous solution of
A
fluorescein
B
formic acid
C
formaldehyde
D
furfuraldehyde
Answer
formaldehyde
Explanation
Solution
The 40% solution of formaldehyde in water is sold in market under the name of formalin. Formaldehyde in the form of formalin (40% formaldehyde, 8% methanol and 52% water) is used for preserving biological specimens. Formaline solution also used as a disinfectants and commonly used in hardeness and nail varnish.