Q441.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 units 2. Pens and pencils 3. Paints 4. Hair oils and cosmetics Select the correct answer using the code given below.
Q442.Concerning ‘Eco-Sensitive Zones’, which of the following statements is/are correct? 1. Eco-Sensitive Zones are the areas that are declared under the Wildlife (Protection) Act, 1972. 2. The purpose of the declaration of Eco-Sensitive Zones is to prohibit all kinds of human activities in those zones except agriculture. Select the correct answer using the code given below.
Q443.Which one of the following ecoregions of India is not correctly matched?
Q444.Consider the following statements. Assertion (A): Soil pollution is more dangerous as compared to industrial pollution. Reason (R): Fertilizer and pesticide enter into food cycle. Choose the correct answer from the code given below. Code
Q445.Concerning the food chains in ecosystem, which of the following kinds of an organism is/are known as decomposer organism/ organisms? 1. Virus 2. Fungi 3. Bacteria Select the correct answer using the code given below.
Q446.“Monoculture of commercially viable trees in destroying the unique natural profile of — Thoughtless exploitation of timber, deforesting vast tracts for palm, cultivation, destruction of mangroves, illegal logging by tribals and poaching only compound the problem. Fresh water pockets are fast drying up due to deforestation and destruction of mangroves”. The place referred to this quotation is
Q447.Brominated flame retardants are used in many household products like mattresses and upholstery. Why is there some concern about their use? 1. They are highly resistant to degradation in the environment. 2. They can accumulate in humans and animals. Select the correct answer using the code given below.
Q448.Which of the following are the primary consumers in an ecosystem? 1. Ants 2. Deer 3. Fox 4. Tiger Select the correct answer from the code given below. Code
Q449.The 2004 Tsunami made people realize that mangroves can serve as a reliable safety hedge against coastal calamities. How do mangroves function as a safety hedge?
Q450.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 can accumulate in the environment and contaminate water and soil. 2. They can enter the food chains. 3. They can trigger the production of free radicals. Select the correct answer using the code given below.
Q451.Concerning food chains in ecosystems, consider the following statements. 1. A food chain illustrates the order in which a chain of organisms feeds upon each other. 2. Food chains are found within the population of a species. 3. A food chain illustrates the number of organism, which are eaten by others. Which of the statements given above is/are correct?
Q452.Which country has the largest percentage of its total under forests?
Q453.In the acid rain, the rain water and snow is contaminated by which of the following pollutants? 1. Sulphur dioxide 2. Nitrogen oxide 3. Carbon dioxide 4. Methane Code
Q454.The most significant aspect of biodiversity is
Q455.Amrita Devi Smriti Award is given for
Q456.In the context of solving pollution problems, what is/are the advantage/advantages of bioremediation technique? 1. It is a technique for cleaning up pollution by enhancing the same biodegradation process that occurs in nature. 2. Any contaminant with heavy metals such as cadmium and lead can be readily and completely treated by bioremediation using micro-organisms. 3. Genetic engineering can be used to create micro-organisms specifically designed for bioremediation. Select the correct answer using the code given below.
Q457.The destruction of biodiversity is due to
Q458.The World Tiger Summit, 2010 was held at
Q459.In which of the following years was constituted the ‘Central Ganga Authority’ by Government of India?
Q460.Biodiversity is described as
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