ENVIROPEDIA

1. _______is the poisonous gas leaked during Bhopal Gas Tragedy.

• a. Methyl Iso Cyanate

• b. Teflon

• c. PVC

• d. Hydrogen Sulphide

Answer explanation

Ans : a

Explanation: In December 1984 Bhopal was the site of the worst industrial accident in history, when about 45 tons of the dangerous gas methyl isocyanate escaped from an insecticide plant that was owned by the Indian subsidiary of the American firm Union Carbide Corporation.

2. Which is the cleanest city of India?

• a. Surat

• b. Indore

• c. Navi Mumbai

• d. Vijaywada

Answer explanation

Ans-b

Explanation- Indore has maintained 5-year ‘cleanest city’ streak. Indore is Madhya Pradesh’s largest and most populated city. A responsible & responsive public, and an army of 'safai mitras', are key allies in this city's successful cleanliness drive. The quality of life has improved in Indore.

The 150 RSPM (Respirable Suspended Particulate Matter) level has come down to 70-80,”

3. Lead in water can cause :

• a. Eye disease

• b. Arthritis

• c. Kidney Damage

• d. Hair fall

Answer explanation

Ans: c

Explanation: Adults exposed to lead can suffer from: Cardiovascular effects, increased blood pressure and incidence of hypertension, Decreased kidney function , Reproductive problems (in both men and women).

4. BOD of river water is found very high. This means water

• a. is clear

• b. is highly polluted

• c. contain algae

• d. contain many dissolved minerals

Answer explanation

Ans: b

Explanation: BOD (Biological Oxygen Demand or Biochemical Oxygen Demand) is the amount of dissolved oxygen, expressed in milligrams of oxygen per litre of water, consumed by micro-organisms to decompose the organic matter present in water.

5. Melanornia (Skin Cancer) is associated with

• a. ozone accumulation

• b. ozone depletion

• c. acid rain

• d. allergens

Answer explanation

Ans : b

Explanation: Skin cancer is an abnormal growth of skin cells. It most often develops on areas of the skin exposed to the sun’s rays. Skin cancer affects people of all colors and races, although those with light skin who sunburn easily have a higher risk.

6. Acid rain mainly result from

• a. Sulphur dioxide

• b. Carbon Dioxide

• c. Carbon Monoxide

• d. Ammonia

Answer explanation

Ans : a

Explanation: Acid rain results when sulfur dioxide (SO2) and nitrogen oxides (NOX) are emitted into the atmosphere and transported by wind and air currents. The SO2 and NOX react with water, oxygen and other chemicals to form sulfuric and nitric acids.

7. Which of the following fuels produce minimum environmental pollution?

• a. Diesel

• b. Kerosene

• c. Hydrogen

• d. Coal

Answer explanation

Ans : c

Explanation: Hydrogen fuels would produce minimum environmental pollution. When hydrogen burns it becomes water vapour. There are no carbon or other compounds released into the atmosphere. There are various compounds including carbon dioxide and carbon monoxide released when other fuels are burnt.

8. Which among the following is the dangerous Green House Gas, created by the Waste Water?

• a. Nitrogen

• b. Sulfur Dioxide

• c. Methane

• d. Carbon Dioxide

Answer explanation

Ans : c

Explanation: Methane gas is produced by the decomposition of organic waste in an oxygen-free environment. The treatment and handling of waste water also produces Methane.

9. Agriculture is known as both a source and sink for greenhouse gases. Which of the following is / are the greenhouse gases released by agricultural activities?

• 1. Carbon Dioxide

• 2. Methane

• 3. Nitric Oxide

• 4. Nitrogen

Answer explanation

Explanation: The main gases emitted by agricultural activities are:

-Carbon dioxide (CO2), which is released during soil cultivation;

-Methane (CH4), which is associated with cattle and livestock manure; and.

-Nitrous oxide (N2O), which comes from using fertilizer and manure.

10. How many deaths are there annually as a result of exposure to outdoor air pollution?

• a. 1.5 million

• b. 2.8 million

• c. 3.1 million

• d. 4.2 million

Answer explanation

Ans: d

Explanation: Ambient air pollution accounts for an estimated 4.2 million deaths per year due to stroke, heart disease, lung cancer, lung cancer, acute and chronic respiratory diseases. Around 99% of the world's population live in places where air quality levels exceed WHO limits.