Chemistry: Physical Chemistry: UPSC Previous Year Questions (Science and Technology)
1 previous year UPSC Prelims question on Chemistry: Physical 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 2007Science and Technology · Chemistry: Physical Chemistry
Q1. Which one of the following types of glass can cut off ultraviolet rays?
Explanation
Option (d) is correct: Crookes glass is a type of glass that can absorb and block ultraviolet (UV) rays. It is specially designed to cut off UV radiation while allowing visible light to pass through. This makes it useful in applications where protection from UV light is needed, such as in certain laboratory equipment or sun protection glasses. Options (a), (b) and (c) are incorrect: Soda glass is a common type of glass used for general purposes, but it does not have UV-blocking properties. Pyrex glass is known for its heat resistance and is used in laboratory equipment but does not specifically block UV rays. Jena glass is a type of glass with special properties, mainly used in scientific instruments, but it is not specifically designed to block ultraviolet rays.
Answer key for these questions
Q
UPSC year
Correct answer
1
2007
(d) Crookes glass
Frequently asked questions
How many previous year UPSC questions are there on Chemistry: Physical Chemistry?
This page covers 1 previous year UPSC Prelims GS Paper-I questions on Chemistry: Physical 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: Physical Chemistry?
Questions on Chemistry: Physical Chemistry (Science and Technology) are available for 8 years, from 1996 to 2009. Use the Year filter to practise a single paper.
