Environmental Chemistry — Part 1 MCQs with Explanations

stratosphere is the correct answer to “Ozone layer is present in”. This question is standard in competitive examination syllabi for Environmental Chemistry.

SO2, CO is the correct answer to “Primary pollutants can be”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Photochemical smog is the correct answer to “The term 'brown air' is used for”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Both of these is the correct answer to “Acid rain can be reduced by use of”. This question is standard in competitive examination syllabi for Environmental Chemistry.

oxides of nitrogen and sulphur is the correct answer to “Acid rain is caused due to pollution of atmosphere by”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Carbon dioxide is the correct answer to “Which one of the following Green house gases is in largest concentration in the atmosphere”. This question is standard in competitive examination syllabi for Environmental Chemistry.

α, β and γ radiations is the correct answer to “Radioactive elements emit”. This question is standard in competitive examination syllabi for Environmental Chemistry.

R Williamson is the correct answer to “Nobel prize in Green Chemistry is not associated with”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Bituminous is the correct answer to “Air pollution is caused by smoke. Which of the following types of coal produces no smoke on burning”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Effluents is the correct answer to “Physico-chemical characteristics of water in water sources undergo changes due to”. This question is standard in competitive examination syllabi for Environmental Chemistry.

use of environmentally bengin methods to synthesise compounds is the correct answer to “Green Chemistry means”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Both 1 and 2 is the correct answer to “With reference to Eutrophication, which of the following statements is/are correct? 1. It is a phenomenon of nutrient enrichment of a water body. 2. It depletes dissolved oxygen of the water. Select the correct answer:”. This question is standard in competitive examination syllabi for Environmental Chemistry.

1, 2 and 3 is the correct answer to “To meet its rapidly growing energy demand, some opinion that india should pursue research and development on thorium as the future fuel of nuclear energy. In this context, what advantage does thorium hold over uranium? 1. Thoriumis farmore abundant in nature than uranium. 2. On the basis of per unit mass of mined mineral, thorium can generate more energy compared to natural uranium. 3. Thorium produces less harmful waste compared to uranium. Which of the statements given above is/are correct”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Phenol is the correct answer to “Which disinfectant cannot be used in drinking water”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Garbage is cultured with bacteria and produce methane is the correct answer to “Which of the following is/are correct method to produce electricity from garbage”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Sulphur dioxide is the correct answer to “Which one of the following is a cause of acid rains”. This question is standard in competitive examination syllabi for Environmental Chemistry.

All of these is the correct answer to “Secondary pollutants can be”. This question is standard in competitive examination syllabi for Environmental Chemistry.

ClONO2 + H2O ⟶ HOCl + HNO3 is the correct answer to “Which reaction is not a part of Acid-rain”. This question is standard in competitive examination syllabi for Environmental Chemistry.

CFCs is the correct answer to “Which of the following are hazardous to the environment because they deplete ozone layer leading to the formation of ozone hole”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Both A and B is the correct answer to “Which of the following is/are example(s) of herbicides”. This question is standard in competitive examination syllabi for Environmental Chemistry.

NO2, O3 and peroxy acetyl nitrate in the presence of Sunlight is the correct answer to “Photo chemical smog is a resultant of the reaction among”. This question is standard in competitive examination syllabi for Environmental Chemistry.

high amounts of nitrogenous nutrients and orthophosphates is the correct answer to “Eutrophication of water body results from”. This question is standard in competitive examination syllabi for Environmental Chemistry.

CF2Cl2 is the correct answer to “Which is not the constituents of photo chemical smog”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Oxide of nitrogen and sulphur is the correct answer to “Smog is essentially caused by the atmospheric presence of”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Chlorofluorocarbons is the correct answer to “Ozone layer of upper atmosphere is being destroyed by which of the following”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Hydrogen sulphide is the correct answer to “Which of the following is an inorganic gaseous pollutant of air”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Troposphere is the correct answer to “Which region of atmosphere has human beings alongwith other organism”. This question is standard in competitive examination syllabi for Environmental Chemistry.

None of the above is the correct answer to “Which of the following gas composition is wrong”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Nitrogen is the correct answer to “Which one of the following is not a 'Green house gas'”. This question is standard in competitive examination syllabi for Environmental Chemistry.

soil pollution is the correct answer to “Pesticides and herbicides are main source of”. This question is standard in competitive examination syllabi for Environmental Chemistry.

troposphere is the correct answer to “The gaseous envelope around the earth is known as atmosphere. The lowest layer of this is extended upto 10 km from sea level, this layer is”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Sludge is the correct answer to “. . . . . . . . is a by product of sewage treatment and can be decomposed to produce biogas.”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Radioactive waste is the correct answer to “Chernobyl disaster is the result of pollution by”. This question is standard in competitive examination syllabi for Environmental Chemistry.

waste water released from kitchen is the correct answer to “Sullage water is-”. This question is standard in competitive examination syllabi for Environmental Chemistry.

below 5.6 is the correct answer to “Acid rain is specified when pH is”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Both A and R are true, but R is not the correct explanation of A is the correct answer to “Consider the following assertion and reason and select the correct answer: Assertion (A) Ozone kills microorganism in water. Reason (R) Ozone is not radioactive.”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Carbon dioxide and Methane is the correct answer to “Which one of the following group of gases contribute to the 'Green House Effect'”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Both A and B is the correct answer to “Which of the following recycling is the disassembly and separation of components and raw materials of electronics”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Temperature decreases with height in the troposphere at an average rale of 6.4°C per km is the correct answer to “Which one of the following statements about temperature is correct”. This question is standard in competitive examination syllabi for Environmental Chemistry.

Thorium is the correct answer to “Which of the following caused radioactive pollution along the coast of Kerala”. This question is standard in competitive examination syllabi for Environmental Chemistry.