Chemistry: Organic Chemistry: UPSC Previous Year Questions (Science and Technology)
1 previous year UPSC Prelims question 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 1–1 of 1 question
UPSC 1998Science and Technology · Chemistry: Organic Chemistry
Q1. Given below: Assertion (A): Phenyl is used as a household germicide. Reason (R): Phenyl is phenol derivative and phenol is an effective germicide.
Explanation
Assertion A is true: Phenyl, a common household germicide, contains phenol derivatives that disrupt bacterial cell membranes and denature proteins, making it effective against germs. Reason R is true: Phenol, also called carbolic acid, is a well-known antiseptic and disinfectant due to its ability to kill bacteria, fungi, and viruses. This explains the germicidal property of phenyl. Thus, both Assertion (A) and Reason (R) are true, and R correctly explains A.
Answer key for these questions
Q
UPSC year
Correct answer
1
1998
(a) Both A and R are true and R is the correct explanation of A
Frequently asked questions
How many previous year UPSC questions are there on Chemistry: Organic Chemistry?
This page covers 1 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.
