A. Air
B. Water
C. Noise
D. Radioactive
Related Mcqs:
- Ringelmann chart No. 2 corresponds to _______________ percent black smoke?
A. 10
B. 20
C. 40
D. 80 - Mollier chart is a _____________ plot?
A. Pressure vs. enthalpy
B. Pressure vs. volume
C. Enthalpy vs. entropy
D. Temperature vs. entropy - 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 - 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 - _________________ chart is a graph related to Antoine equation ?
A. Ostwald
B. Cox
C. Mollier’s
D. Enthalpy-concentration - Inorganic impurities causing water pollution is ____________________?
A. Fats
B. Carbohydrates
C. Salts of metals
D. Protein - 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 - 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. - ______________ cannot control the noise pollution ?
A. Use of silencers
B. Green house gases
C. Vibration damping
D. Tree plantation - Which of the following acts as a natural source of air pollution ?
A. Forest fire
B. Deforestation
C. Volcanic eruption
D. None of these
