Formaldehyde is used in vat dyeing as?
Correct answer: C. Decolorising agents
- A. Coloring agent
- B. Dehydrating agents
- C. Decolorising agents
- D. Solubilizing agents
Explanation
Formaldehyde is sometimes used as a decolorizing agent in dyeing processes. It can be used to remove excess or unwanted color from fabrics or other materials. However, formaldehyde can also be harmful to humans and the environment, so it is important to use it safely and by regulations.
Last updated
About Aldehydes and Ketones
Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from ketones.
Practise Aldehydes and Ketones
679 free Aldehydes and Ketones MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.