Podcast
Questions and Answers
What is the principle behind Atomic Absorption Spectrometry?
What is the principle behind Atomic Absorption Spectrometry?
- Atoms in the excited state emit light of a particular wavelength
- Molecules in the excited state emit light of a particular wavelength
- Molecules in the ground state absorb light of a particular wavelength
- Atoms in the ground state absorb light of a particular wavelength (correct)
What is the purpose of adding a DPD no. 1 tablet to a swimming pool water sample?
What is the purpose of adding a DPD no. 1 tablet to a swimming pool water sample?
- To estimate the suspended solids in the water sample
- To test for the presence of nitrate ions
- To measure the pH of the water sample
- To determine the concentration of free chlorine (correct)
What is the unit of measurement for Biochemical Oxygen Demand (BOD)?
What is the unit of measurement for Biochemical Oxygen Demand (BOD)?
- g/L
- mg/L
- ppm (correct)
- mg/mL
What is the purpose of the Winkler Titration?
What is the purpose of the Winkler Titration?
What is the purpose of adding ammonium molybdate in anion testing for phosphate?
What is the purpose of adding ammonium molybdate in anion testing for phosphate?
What is the principle behind pH measurement using Universal indicator paper?
What is the principle behind pH measurement using Universal indicator paper?
What is the physical state of the atoms that absorb radiation in Atomic Absorption Spectrometry?
What is the physical state of the atoms that absorb radiation in Atomic Absorption Spectrometry?
What is the duration for which a water sample is kept in the dark for the Biochemical Oxygen Demand (BOD) test?
What is the duration for which a water sample is kept in the dark for the Biochemical Oxygen Demand (BOD) test?
What is the colour of the product formed when free chlorine oxidizes DPD in a swimming pool water sample?
What is the colour of the product formed when free chlorine oxidizes DPD in a swimming pool water sample?
What is the temperature at which the Biochemical Oxygen Demand (BOD) test is conducted?
What is the temperature at which the Biochemical Oxygen Demand (BOD) test is conducted?
Which of the following methods is used to measure the concentration of dissolved oxygen in a water sample?
Which of the following methods is used to measure the concentration of dissolved oxygen in a water sample?
