Q.1
Which of these is used as the most common disinfectant?
  • a) Chlorine
  • b) Chlorine dioxide
  • c) Ozone
  • d) UV rays
Q.2
Which of these is the strongest disinfectant?
  • a) Ozone
  • b) Chlorine
  • c) Chlorine dioxide
  • d) UV rays
Q.3
Which of these methods do not form any byproduct?
  • a) UV
  • b) Ozone
  • c) Chlorine
  • d) Chlorine dioxide
Q.4
What is the most effective dosage of chlorine to be used as a disinfectant?
  • a) 1-6 mg/L
  • b) 6-8 mg/L
  • c) 8-10 mg/L
  • d) 10-12 mg/L
Q.5
What is the most effective dosage of ozone to be used as a disinfectant?
  • a) 1-5 mg/L
  • b) 5-10 mg/L
  • c) 10-12 mg/L
  • d) 12-14 mg/L
Q.6
What is the most effective dosage of UV to be used as a disinfectant?
  • a) 20-100 mJ/cm2
  • b) 10-20 mJ/cm2
  • c) 100-120 mJ/cm2
  • d) 130-150 mJ/cm2
Q.7
Which of these produce chlorite as the byproduct?
  • a) Free chlorine
  • b) Ozone
  • c) Chlorine dioxide
  • d) Combined chlorine
Q.8
Free chlorine is used to destroy bacteria. This reaction is classified as which order reaction?
  • a) First
  • b) Pseudo first
  • c) Second
  • d) Zero
Q.9
Which type does the following reaction belong to?
  • a) Accelerating rate reaction
  • b) Decelerating rate reaction
  • c) Pseudo first order
  • d) First order reaction
Q.10
Which type does the following reaction belong to?
  • a) Accelerating rate
  • b) Decelerating rate
  • c) Pseudo first order
  • d) First order reaction
Q.11
What is the EE/O for TCA in kWh/US gal/order?
  • a) 15
  • b) 20
  • c) 10
  • d) 30
Q.12
What is the process of removal of contaminating pathogenic micro-organisms from the articles called?
  • a) Decontamination
  • b) Sanitization
  • c) Disinfection
  • d) Sterilization
Q.13
What is the technique used to achieve microbe-free environment?
  • a) Bacteriostasis
  • b) Bactericidal
  • c) Sanitization
  • d) Asepsis
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