Which of the following aldehdyes is used to prepare urotropine medicine:
Correct answer: C. Formaldehyde
- A. Acetaldehyde
- B. Acetone
- C. Formaldehyde
- D. Ethyl alcohol
Explanation
(a) Uses of Fomaldehyde(i) It is used in the manufacture of resins like urea-formaldehyde and plasticssuch as bakelite.(ii) It is used in the manufacture of dyes such as indigo, para-rosaniline, etc.(iii) Its 40% aqueous solution called formalin is used as anantiseptic, a disinfectant, a germicide, a fungicide and forpreserving animal specimens and sterlising surgical instruments.(iv) It is used as a decolourising agent in vat dyeing.(v) It is used in the silvering of mirrors.(vi) It is used in making medicine urotropine used as a urinary antiseptic.(vii) It is used in making formamint (formaldehyde + lactose) used as throatlozenges.(viii) It is used in the processing of anti-polio vaccine.
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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.
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