Correct Answer:
(C)
Noise pollution
Green Muffler is a control measure for noise pollution by planting green plants. Normally 4-5 rows of plants are grown near the noisy places like roadsides and industrial areas so that they can obstruct noise.
Ques:
72
Which gas was responsible for Bhopal gas tragedy?
Correct Answer:
(C)
Methyl isocyanate gas
The Bhopal gas tragedy involved a leak of highly toxic methyl isocyanate gas from a pesticide plant, causing widespread death and illness in Bhopal, India. Bhopal Gas Tragedy was a gas leak incident in India, considered the world’s worst industrial disaster. It occurred on the night of 3 December, 1984 at the Union Carbide India Limited pesticide plant in Bhopal, Madhya Pradesh. Over 500,000 people were exposed to Methyl Isocyanate (MIC) gas. According to state government record, 3787 people died in this tragedy. Later, due to disease caused by the gas around 25000 people were killed.
Ques:
73
Consider the following statements regarding Black Carbon:
It produced when sunlight reacts with Nitrogen Oxides & volatile organic compounds in the atmosphere which results in the formation of Bad ozone.
It is a short-lived pollutant with a lifetime of only days to weeks.
Which of the statements given above is/are correct?
Correct Answer:
(B)
2 only
Black Carbon
It is a component of fine particulate matter formed through the incomplete combustion of fossil fuels, biofuel, and biomass.
It is a short-lived pollutant with a lifetime of only days to weeks.
It is one of the main types of particles in soot.
Photochemical smog
Produced when sunlight reacts with Nitrogen Oxides & volatile organic compounds in the atmosphere which results in the formation of Bad ozone.
It is visible as a brown haze.
Contains more oxidizing agents.
Often referred to as “summer smog” or “Los Angeles smog,” it occurs most prominently in urban areas.
Ques:
74
Consider the following:
Minamata Disease
Yokkaichi Asthma
Itai-itai Disease
Blue baby syndrome
Which of the following above are diseases caused by environmental degradation:
Correct Answer:
(D)
All of the above
Diseases Caused By Environmental Degradation
Minamata Disease: Minamata disease is a neurological condition brought on by severe mercury poisoning.
Yokkaichi Asthma: Yokkaichi asthma is the term used to describe cases of chronic obstructive pulmonary disease, chronic bronchitis, pulmonary emphysema, and bronchial asthma in people as well as various environmental changes.
Itai-itai Disease: Itai-itai disease was initially identified in Japan in the 1960s and is caused by exposure to cadmium (Cd), which is a result of human activities associated with industrialization.
Blue Baby Syndrome: Blue Baby Syndrome, sometimes known as Infant methemoglobinemia is a disorder where a baby's skin turns blue.
Pneumoconiosis: The word "pneumoconiosis" refers to a group of interstitial lung diseases where interstitial fibrosis has developed as a result of dust exposure.
Asbestosis: Asbestosis is a chronic lung disease brought on by breathing in asbestos fibers.
Silicosis: Silicosis is the most common among those who work in the quarrying, industrial, or construction industries.
Emphysema: Emphysema is the term used to describe the destruction of delicate lung tissue brought on by cigarette smoking and air pollution.
Sick Building Syndrome (SBS): Sick building syndrome (SBS) is a group of diseases connected to a person's home or place of employment.
Ques:
75
Consider the following statements regarding Fly ash:
It is a by-product of burning pulverized coal in electric power generating plants.
Indian coal is of low grade with very less ash content compared to imported coal.
Which of the statements given above is/are correct?
Correct Answer:
(A)
1 only
Fly ash is a fine powder that is a by product of burning pulverized coal in electric power generating plants.
Indian coal is of low grade with more ash content (30-45 %) compared to imported coal.
Ques:
76
Consider the following statements regarding Silicosis:
1. It is a lung disease caused by inhaling a huge amount of crystalline silica dust.
2. Silica is a crystal-like substance that is found in sand, rock, and quartz.
Which of the statements given above is/are correct?
Correct Answer:
(C)
Both 1 and 2
Silicosis is a lung disease caused by inhaling silica dust, a crystal-like substance found in sand, rock, and quartz. When these materials are worked with, such as in mining or construction, fine silica dust can be created and inhaled, leading to lung scarring and difficulty breathing.
Ques:
77
Consider the following statements regarding Blue Baby Syndrome:
1. It is a disorder where a baby's skin turns blue.
2. Insufficient oxygen levels in the blood cause blue baby syndrome.
Which of the statements given above is/are correct?
Correct Answer:
(C)
Both 1 and 2
Blue Baby Syndrome
Blue Baby Syndrome, sometimes known as Infant methemoglobinemia is a disorder where a baby's skin turns blue.
Insufficient oxygen levels in the blood cause blue baby syndrome.
Some infants are born with methemoglobinemia (congenital), whereas others develop it later in life (acquired).
Normally, the heart pumps blood to the lungs, where it is oxygenated. The heart is used to pump the blood back throughout the body.
Blood may not be properly oxygenated if the heart, lungs, or blood are not functioning properly. The skin turns blue as a result of this.
Ques:
78
Which of the following statements about Radioactive pollution are correct?
It causes a hereditary change in the animals.
It causes disbalance among different minerals in the soil.
It hinders blood circulation.
It causes carcinogenesis.
Select the correct answer from codes given below:
Codes :
Correct Answer:
(C)
1, 3 and 4
Radioactive pollution causes hereditary changes in the all living organism. It hinders blood circulation and causes carcinogenesis. It does not cause disbalance among different minerals in the soil. Hence (c) is the correct answer.
Ques:
79
Euro emission norms are emission standards and these represent a package setting limits for emission from a vehicle. Which of the following gases is covered under this?
Correct Answer:
(D)
All of the above
Euro emission standards define the acceptable limits for exhaust emission of new vehicles sold in the European Union. Emission of nitrogen oxides, hydrocarbon, non- methane hydrocarbons, carbon monoxide and particulate matter are regulated for the most vehicle type. It is notable that European countries introduced 'Euro I' standard in 1992. Significantly, Mashelkar Committee for National Auto fuel Policy suggested implementation of Euro standard to control pollution. Importantly, BS VI standard was implemented in India starting April 1, 2020. BS-7 emission norms are set to be implemented by the Government between the Period of 2025 - 2026.
Note: To meet Euro-II emission standards, the sulphur content should be 0.05 per cent or less than this in the ultralow sulphur diesel.
Ques:
80
Carbon monoxide, emitted by vehicles which turn to carbon dioxide by the catalyst converter, whose ceramic disc is controlled by?
Correct Answer:
(D)
Palladium
A catalytic converter is an emission control device that converts toxic gases and pollutants in the exhaust gas to less toxic pollutants by catalyzing a redox reaction. The catalyst itself is most often a mix of precious metals. Palladium and Platinum are two such precious metals used.