Chemistry: Organic Chemistry: UPSC Previous Year Questions (Science and Technology)
2 previous year UPSC Prelims questions on Chemistry: Organic Chemistry (Science and Technology). Choose an option to see the answer and explanation.
Explanations state facts as of the year each question was asked; words like “recently” refer to that year.
Showing 1–2 of 2 questions
UPSC 2008Science and Technology · Chemistry: Organic Chemistry
Q1. What is Bisphenol A (BPA)?
Explanation
Bisphenol A (BPA) is an industrial chemical extensively used in the production of polycarbonate plastics and epoxy resins. Polycarbonate plastics made using BPA are commonly employed in the manufacture of reusable water bottles, food containers, and baby bottles due to their durability and lightweight properties. Epoxy resins containing BPA are used as coatings for the inside of food and beverage cans to prevent corrosion and contamination. However, BPA is a controversial substance because it can leach into food and beverages under high temperatures or prolonged storage. It is considered a potential endocrine disruptor that may interfere with hormonal activity, prompting regulatory bodies worldwide to evaluate its safety in food-related applications.
UPSC 2008Science and Technology · Chemistry: Organic Chemistry
Q2. Mixture of which one of the following pairs of gases is the cause of occurrence of most of the explosions in mines?
Explanation
Methane and air are responsible for mine explosions, often referred to as fire damp explosions. Methane (CH₄) is a flammable gas that accumulates in coal mines. When mixed with air in the presence of a spark, it can cause deadly explosions. Options (a), (b) and (d) are incorrect:
While Hydrogen and Oxygen are explosive, these gases are not significantly common in mining environments. Oxygen and Acetylene are used in welding, not relevant to mine explosions. Carbon Dioxide and Methane: Carbon dioxide is inert and cannot contribute to mine explosions.
Answer key for these questions
Q
UPSC year
Correct answer
1
2008
(c) A chemical used for the development of food packaging materials
2
2008
(c) Methane and air
Frequently asked questions
How many previous year UPSC questions are there on Chemistry: Organic Chemistry?
This page covers 2 previous year UPSC Prelims GS Paper-I questions on Chemistry: Organic Chemistry (Science and Technology), asked from 1996 to 2009. Each has the correct answer and an explanation.
How should I use previous year UPSC questions for Prelims?
Attempt each question first, then open the answer and read the explanation for every option. Repeat by chapter, and track which statements UPSC reuses across years. Previous year questions show the exam pattern and difficulty level.
Which years are covered for Chemistry: Organic Chemistry?
Questions on Chemistry: Organic Chemistry (Science and Technology) are available for 10 years, from 1996 to 2009. Use the Year filter to practise a single paper.
