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ethylene glycol
gaseous formaldehyde
formaldehyde in water
formaldehyde in methanol
The chief constituent of natural gas is:
The chief raw material used for manufacturing Rayon is:
The chief source for the production of nitrogeneous fertilizers is:
The colour of an opaque object is due to the colour it
The colour of the carrots is due to the presence of
The colour of the ocean seems to be blue as the sunlight falling on it is
The colour of violet glass is due to the presence of
The commercial name for calcium hydride is
The commonly used coolant in refrigerators is
The compound used in prickly heat powder to prevent excessive sweating is