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1. What is the chemical formula for DDT?

a. C12H13Cl2

b. C14H9Cl5

c. C22H19Cl2

d. C10H9Cl4

2. Which of the following is NOT a common use for DDT?

a. Pesticide for agriculture

b. Insecticide for malaria control

c. Disinfectant for medical equipment

d. Hair styling product

3. In what year was DDT banned for most uses in the United States?

a. 1962

b. 1972

c. 1982

d. 1992

4. What is the primary method of DDT degradation in the environment?

a. Photolysis

b. Hydrolysis

c. Biodegradation

d. Oxidation

5. What is the primary route of human exposure to DDT?

a. Inhalation

b. Skin contact

c. Oral ingestion

d. Injection

6. Which of the following is NOT a known health effect associated with DDT exposure?

a. Cancer

b. Neurological disorders

c. Reproductive harm

d. Increased athletic performance

7. What is the primary mechanism of DDT's insecticidal activity?

a. Disruption of the nervous system

b. Inhibition of growth and development

c. Killing of beneficial insects

d. All of the above

8. DDT is considered to be a persistent organic pollutant (POP) because it:

a. Is toxic to human and animal health

b. Has a long half-life in the environment

c. Can travel long distances through the atmosphere

d. All of the above

9. In what year was DDT added to the Stockholm Convention on Persistent Organic Pollutants?

a. 2001

b. 2003

c. 2005

d. 2007

10. Which of the following countries has NOT banned the use of DDT?

a. United States

b. European Union

c. Canada

d. India

Answers:

    1. a
    2. d
    3. b
    4. c
    5. c
    6. d
    7. a
    8. d
    9. c
    10. d
    1. Pediculicides
    2. Calcium Hydroxide
    3. Ozone
    4. Urea
    5. Esters
    6. Mixtures

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    Multiple Choice Questions (MCQs)

    The UPSC (Union Public Service Commission) Prelims exam is the first step in the selection process for the Indian Administrative Service (IAS), Indian Foreign Service (IFS), and Indian Police Service (IPS) among other civil services in India. The exam consists of two papers: General Studies Paper 1 and General Studies Paper 2 (also known as the Civil Services Aptitude Test or CSAT). The General Studies Paper 1 is worth 200 marks and is comprised of multiple choice questions (MCQs). The exam tests the candidate's knowledge of current events, Indian and World history, Indian and World geography, Indian polity and governance, economic and social development, general science and environmental ecology and biodiversity.

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    The questions are designed to test the candidate's understanding of the subject matter and their ability to apply that knowledge in a practical context. So, MCQs on this website are prepared in that direction to make you conceptually strong.

    The MCQs in UPSC Prelims are generally of the following types:

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