Photochemical smog is caused primarily by which of the following?
- CO
- NO2
- O3
- CO₂
Submitted by :- Muhammad Nawaz
CHEMISTRY
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Environmental pollution refers to which of the following?
- Release of toxic/undesirable materials in environment
- Dissipation of energy
- Peeling of top soil
- None of these
Submitted by :- Muhammad Nawaz
Which gas is not a greenhouse gas?
- O3
- CO
- CH4
- H2O vapors
Submitted by :- Muhammad Nawaz
Which environmental problem could lead to a rise in sea level?
- Acid rain
- Cutting down the trees in the rain forests
- Global warming
- Damage to the ozone layer
Submitted by :- Muhammad Nawaz
Which pollutant results from roasting and heating processes?
- Dust
- Smoke
- Metal fumes
- All of these
Submitted by :- Muhammad Nawaz
The procedure of addition of crystals of to concentrated syrup is known as sugar
- Sulphitation
- Carbonation
- Defecation
- Seeding
Submitted by :- Muhammad Nawaz
__________ is best in its cleaning action.
- Soap
- Surfactant
- Detergents
- None of these
Submitted by :- Muhammad Nawaz
What is caustic potash?
- NaCl
- NaBH4
- NaOH
- KOH
Submitted by :- Muhammad Nawaz
Which fatty acids is not present in coconut oil?
- Linoleic acid
- Palmitic acid
- Steric acid
- Lauric acid
Submitted by :- Muhammad Nawaz
Soft soap is made from _________ and fatty acids.
- KOH
- NaOH
- LiOH
- All of these
Submitted by :- Muhammad Nawaz