Which compounds has fishing odor?
- Amines
- Organic sulphides
- Ammonia
- Carboxylic acids
Submitted by :- Muhammad Nawaz
CHEMISTRY
Prepare for your upcoming test with a comprehensive collection of Chemistry multiple-choice questions (MCQs), ranging from basic to advanced topics. These Chemistry MCQs cover various sections of the subject, providing you with valuable practice and boosting your chances of scoring well in the Chemistry portion of the test. Whether you’re a student or a job seeker preparing for exams, these MCQs will prove beneficial for your test preparation.
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Which is a not chemical characteristic of water?
- pH
- Color
- BOD
- COD
Submitted by :- Muhammad Nawaz
Which is a not physical characteristic of water?
- Smell
- Odor
- Chlorine contents
- Color
Submitted by :- Muhammad Nawaz
Which water require zero hardness?
- Boiler feed water
- Dyeing water
- Paper will water
- Laundry water
Submitted by :- Muhammad Nawaz
The presence of which in drinking water is responsible for mottling of teeth?
- Mercury
- Fluorine
- Chlorine
- Iodine
Submitted by :- Muhammad Nawaz
Water pollution is due to
- Industrial effluents
- Swages and other wastes
- Agricultural discharges
- All of these
Submitted by :- Muhammad Nawaz
Permanent hard water is softened by addition of
- MgCO3
- CaCO3
- Na2CO3
- BaCO3
Submitted by :- Muhammad Nawaz
Temporary hard water is softened on industrial scale by adding
- Ca(OH)2
- Mg(OH)2
- KOH
- NaOH
Submitted by :- Muhammad Nawaz
Permanent hardness of water is due to
- Sulphate of Ca
- Sulphate of Mg
- Chloride of Ca
- All of these
Submitted by :- Muhammad Nawaz
Water is often treated with chlorine to:
- Increase oxygen content
- Remove suspended particles
- Remove hardness
- Kill germs
Submitted by :- Muhammad Nawaz