Podcast
Questions and Answers
At what temperature does water have its greatest density?
At what temperature does water have its greatest density?
- 0°C
- 10°C
- 25°C
- 4°C (correct)
Which of the following best describes the color of water in small quantities?
Which of the following best describes the color of water in small quantities?
- Colorless (correct)
- Green
- Deep blue
- Pale blue
What is the boiling point of water under normal pressure?
What is the boiling point of water under normal pressure?
- 125°C
- 75°C
- 50°C
- 100°C (correct)
What characteristic makes water capable of dissolving almost all substances?
What characteristic makes water capable of dissolving almost all substances?
Which classification of water refers to water that is mainly due to the presence of CO32- and HCO3-?
Which classification of water refers to water that is mainly due to the presence of CO32- and HCO3-?
What is the residue left after evaporation of sample water, drying at 103°C, cooling in desiccator and weighing until constant weight?
What is the residue left after evaporation of sample water, drying at 103°C, cooling in desiccator and weighing until constant weight?
What is the main indication of the presence of strongly basic or acidic industrial waste in water?
What is the main indication of the presence of strongly basic or acidic industrial waste in water?
Which physical examination of water is a measure of electrical conductivity?
Which physical examination of water is a measure of electrical conductivity?
What is the pH range for most natural water?
What is the pH range for most natural water?
Sewage pollution may be suggested by the high value of which component in water analysis?
Sewage pollution may be suggested by the high value of which component in water analysis?
What is the measure of CO32- (half CO32- reaction) and OH in water analysis?
What is the measure of CO32- (half CO32- reaction) and OH in water analysis?
What is the main cause of acidity in water?
What is the main cause of acidity in water?
How is the pH of pure water at 25°C defined?
How is the pH of pure water at 25°C defined?
Which component can be determined as mentioned before using a filtered sample in water analysis?
Which component can be determined as mentioned before using a filtered sample in water analysis?
What should the sample bottle for storing water be made of, according to sampling guidelines?
What should the sample bottle for storing water be made of, according to sampling guidelines?
Which type of water classification is mainly due to mineral acids, CO2 and sometimes due to salts of weak base strong acids?
Which type of water classification is mainly due to mineral acids, CO2 and sometimes due to salts of weak base strong acids?
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