NPTEL Course

Air Pollution and Control

Week 5 Assignment 5 (Lecture 21 to 25)

Please select the correct option. All questions contain only one correct answer.

1. The equation used in the MOBILE model for estimating the hot running emissions per unit distance (ex) in a freeway and arterials is given as (where, ex = Emission in per unit distance; SCF = Speed Correction factor; BER = Basic emission rate; EO = Emission offset): a. ex = SCF (BER + EO) b. ex = SCF (BER – EO) c. ex = SCF (BER x EO) d. ex = SCF (BER / EO) i. Do not include the dynamic behavior of the engine ii. Inclusion of a catalyst model should lead to improvements in the existing model iii. It has been developed only for Light Duty Vehicle

2. Which of the following limitations is/are associated with the EMPA model used for estimating vehicular emissions?

Select the correct answer a. i b. i & ii c. ii & iii d. i, ii & iii

3. The GAINS model is an integrated assessment model dealing with costs and potential for air pollution control and greenhouse gas (GHG) mitigation and assessing policy interactions. The GAINS stands for a. Greenhouse Gas and Air Pollution Information and Simulations b. Greenhouse Gas and Air Pollution Interactions and Synergies c. Greenhouse Gas and Air Pollutants Interactions and Synergies d. Greenhouse Gas and Air Pollutants Information and Simulations a. Heavy metals b. PM c. VOC d. NH3 a. N2O b. CO2 c. CH4 d. O3 a. Emission_CH4 = ∑ (Number of animalsj – EFCH4) b. Emission_CH4 = ∑ (Number of animalsj + EFCH4) c. Emission_CH4 = ∑ (Number of animalsj x EFCH4) d. Emission_CH4 = ∑ (Number of animalsj / EFCH4) a. Commercial sector b. Agriculture sector c. Industrial sector d. Transport sector

4. Emissions of which of the following air pollutants is NOT estimated by the GAINS model?

5. There are emissions of various pollutants and GHGs from agricultural activities. Which of the following GHGs is released by livestock’s enteric fermentation and rice cultivation?

6. Which of the following equations is used to estimate the CH4 emissions from enteric fermentation?

7. Which of the following sectors covers emissions from the activities such as cooking, heating, and captive power generation in hotels or offices, shopping malls, hospitals, and crematoriums.

8. The general equation for calculating the emissions from the residential or commercial sector is the product of: a. Population and emission factor b. Fuel consumption and emission factor c. Fuel consumption factor and duration d. Fuel consumption and Population

9. What is(are) the application(s) of remote sensing in air quality management?

I. Monitoring of air pollution data

II. Validation of models

III. Identification of airsheds

IV. Demonstration of episodic pollution a. I, II & IV b. II c. I & II d. I, II, III & IV a. Aerosol Optical Dispersion b. Aerosol Optical Diffusion c. Aerosol Optical Depth d. Aerosol Optical Detection

Select the correct answer.

10. ________________ expresses the quantity of light removed from a beam by scattering or absorption by aerosols during its path through the atmosphere.