Ringelmann chart is used for the evaluation of _____________ pollution?

Related Mcqs:

1. Ringelmann chart No. 2 corresponds to _______________ percent black smoke?

   A. 10
   B. 20
   C. 40
   D. 80

2. Mollier chart is a _____________ plot?

   A. Pressure vs. enthalpy
   B. Pressure vs. volume
   C. Enthalpy vs. entropy
   D. Temperature vs. entropy

3. Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of _____________ present in it?

   A. Coal ash
   B. Potassium cyanide
   C. Ortho-xylene
   D. None of these

4. Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid used in ideal refrigeration cycle is_____________________?

   A. Positive
   B. Negative
   C. Zero
   D. Infinity

5. _________________ chart is a graph related to Antoine equation ?

   A. Ostwald
   B. Cox
   C. Mollier’s
   D. Enthalpy-concentration

6. Inorganic impurities causing water pollution is ____________________?

   A. Fats
   B. Carbohydrates
   C. Salts of metals
   D. Protein

7. Which of the following sources is responsible for maximum air pollution ?

   A. Industrial chimney exhaust
   B. Forest fire
   C. Automobiles exhaust
   D. Photochemical oxidation of organic matter

8. Thermal pollution due to excessive heat & temperature in the working place causes__________________?

   A. Reduction in working efficiency of manpower
   B. Fatigue
   C. High breathing rate
   D. All A., B. & C.

9. ______________ cannot control the noise pollution ?

   A. Use of silencers
   B. Green house gases
   C. Vibration damping
   D. Tree plantation

10. Which of the following acts as a natural source of air pollution ?

    A. Forest fire
    B. Deforestation
    C. Volcanic eruption
    D. None of these