Q70. Magnetite particles, suspected to cause neurodegenerative problems, are generated as environmental pollutants from which of the following? 1. Brakes of motor vehicles 2. Engines of motor vehicles 3. Microwave stoves within homes 4. Power plants 5. Telephone lines Select the correct answer using the code given below.

There is some concern regarding the nanoparticles of some chemical elements that are used by the industry in the manufacture of various products. Why? 1. They c

Which of the following are the reasons/factors for exposure to benzene pollution? 1. Automobile exhaust 2. Tobacco smoke 3. Wood burning 4. Using varnished wood

Consider the following statements: 1. Other than those made by humans, nanoparticles do not exist in nature. 2. Nanoparticles of some metallic oxides are used i

Lead, ingested or inhaled, is a health hazard. After the addition of lead to petrol has been banned, what still are the sources of lead poisoning? 1. Smelting u

Why is there a great concern about the ‘microbeads’ that are released into the environment? (a) They are considered harmful to marine ecosystems. (b) They are c

Consider the following: 1. Bluetooth device 2. Cordless phone 3. Microwave oven 4. Wi-Fi device Which of the above can operate between 2.4 and 2.5 GHz range of

Which of the following are some important pollutants released by the steel industry in India? 1. Oxides of sulphur 2. Oxide of nitrogen 3. Carbon monoxide 4. Ca

With the present state of development, Artificial Intelligence can effectively do which of the following? 1. Bring down electricity consumption in industrial un

Why is there a concern about copper smelting plants? 1. They may release lethal quantities of carbon monoxide into the environment. 2. The copper slag can cause

With reference to furnace oil, consider the following statements: 1. It is a product of oil refineries. 2. Some industries use it to generate power. 3

The ‘Common Carbon Metric’, supported by UNEP, has been developed for (a) Assessing the carbon footprint of building operations around the world (b) E

What is blue carbon? (a) Carbon captured by oceans and coastal ecosystems (b) Carbon sequestered in forest biomass and agricultural soils (c) Carbon c

According to India’s National Policy on Biofuels, which of the following can be used as raw materials for the production of biofuels? 1. Cassava 2. Da

Which one of the following statements best describes the term ‘Social Cost of Carbon’? It is a measure, in monetary value, of the: (a) long-term damag

Consider the following statements: 1. Coal ash contains arsenic, lead and mercury. 2. Coal-fired power plants release sulphur dioxide and oxides of ni

In rural road construction, the use of which of the following is preferred for ensuring environmental sustainability or to reduce carbon footprint? 1.

In the context of which one of the following are the terms ‘pyrolysis and plasma gasification’ mentioned? (a) Extraction of rare earth elements (b) Na