Top 150+ Solved Environmental Issues MCQ Questions Answer
Q. Sound waves of_____ decibels causes damage to eardrum or permanently impair hearing?
a. 150db or more
b. 120db or more
c. More than 80db
d. 110db
Q. Which type of pollution causes altered breathing pattern, increased heartbeats and sleeplessness?
a. Noise pollution
b. soil pollution
c. Radioactive pollution
d. Thermal pollution
Q. According to 1990s survey which city ranked 4th among the 41 most polluted cities of the world?
a. Ankleshwar
b. Delhi
c. Japan
d. China
Q. Name the metropolitan city leading the country in its levels of air pollution.
a. Ankleshwar
b. Delhi
c. Chennai
d. Bangalore
Q. Which is the drastic change seen in Delhi public transport after 2002?
a. All the buses run by CNG
b. Use of unleaded petrol
c. Use of LPG in buses
d. All the buses run by methanol
Q. Which is correct according to EURO II norms?
a. Sulphur can be controlled at 350ppm in diesel and 150ppm in petrol
b. Sulphur can be controlled at 150ppm in petrol
c. Lead can be controlled at 350ppm in diesel
d. Lead can be controlled at 150ppm in petrol
Q. Which harmless gases are produced by smokes stakes of thermal power plant and smelters?
a. N2, O2
b. CO2
c. CO, N2
d. SO2
Q. For reducing vehicular pollution which measures are taken by Delhi government?
a. Phasing out old vehicles
b. Use of unleaded and low sulphur petrol and diesel
c. Use of catalytic converter in vehicles
d. All of these
Q. In which cities Bharat stage II is applied from 1st april’2005?
a. Delhi, Mumbai, Chennai, Baroda, Surat
b. Delhi, Mumbai, Kanpur, Baroda, Surat
c. Delhi, Mumbai, Chennai, Baroda, Pune
d. Mumbai,Pune,Bangalore,Surat,Ahmedabad
Q. A substantial fall in the level of which gases have been found between1997 to2005 in Delhi?
a. CO2,SO2
b. CO2,CO,SO2
c. CO2,SO2 ,NO2
d. CO2,CO,CFC
Q. To safeguard our water resource the amendment was passed in the year.
a. 1974
b. 1981
c. 1986
d. 1987
Q. Which chemical of petrol inactivates the catalysts of filter for reducing emission of poisonous gases?
a. Lead
b. Rhodium
c. Straunsium
d. Iron
Q. Which colloidal material is seen in domestic sewage?
a. Sand and silt
b. Fecal material and bacteria
c. Sodium and calcium
d. Phosphorus
Q. What happens to the O2 level and BOD of river water at sewage discharge point?
a. Sharp decline in O2 level and rise in BOD
b. O2 level and BOD both increases
c. No change in BOD but O2 level increases
d. No change in O2 level but BOD increases
Q. What is the reason for mortality of fish in water body?
a. Biodegradation of organic matter by microbes
b. Due to algal bloom
c. Due to decrease in BOD
d. a and b both