Formaldehyde is used in which of the following options?
A. Perfumes
B. Air conditiners
C. Refrigerators
D. Fire extinguishers
Answer: Option A
This Question Belongs to Chemistry GK Chapter Wise >> Organic Chemistry
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Traditional 'battery' contains which of the following chemicals?
A. Ethylene glycol
B. Sulphuric acid
C. Sodium bicarbonate
D. Ethanol
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