What is formaldehyde?

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AA colorless liquid with a sweet smell

BA colorless gas with a pungent smell

CA colored gas with a pungent smell

DA colored liquid with a sweet smell

Answer:

Formaldehyde is a colourless gas with a pungent smell. It is one of the most common volatile organic compounds (VOCs) found indoors.
Formaldehyde is emitted from building materials (e.g. particleboard, plywood, glue, paints) as well as household and personal care products (e.g. drapes, carpets, cleaning products, hair sprays).

Related Questions:

Which of the following are mechanisms through which pesticide degradation can occur?

Pesticide degradation can occur through chemical degradation, photo-degradation, and microbial degradation.
Pesticides only degrade through absorption into plants.
Degradation primarily happens through physical transport processes like runoff.
Pesticides do not degrade; they only volatilize or leach.

Identify the process described by the physical transport of pesticides over the ground surface by rainwater.

Runoff is the term for the physical movement of pesticides across the ground surface due to rainwater.
Leaching is the process of pesticides moving over the ground surface with rainwater.
Volatilization describes the surface movement of pesticides by rainwater.
Absorption is the physical transport of pesticides over the ground by rainwater.