Chemistry PYQ
IAS Science — Chemistry previous year questions with solutions.
Browse by Year
Chemistry at a glance
Questions per year
78 across 23 yearsDifficulty mix
78 total- easy25 · 32%
- medium53 · 68%
Subtopic-wise weightage
Breakdown of the 78 Chemistry questions tagged to a subtopic, by year — darker cells mean more questions.
| Subtopic | Weightage | Total | 2025 | 2023 | 2022 | 2021 | 2019 | 2017 | 2014 | 2012 | 2011 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998 | 1997 | 1996 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Metals And Non-Metals | 21.8% | 17 | 2 | 2 | 1 | 1 | 1 | 1 | 3 | 1 | 3 | 1 | 1 | ||||||||||||
| Chemistry In Everyday Life | 17.9% | 14 | 1 | 1 | 1 | 1 | 1 | 5 | 1 | 1 | 1 | 1 | |||||||||||||
| Agricultural And Industrial Chemistry | 11.5% | 9 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | |||||||||||||||
| Acids, Bases And Salts | 5.1% | 4 | 1 | 1 | 1 | 1 | |||||||||||||||||||
| Hydrocarbons | 5.1% | 4 | 1 | 1 | 1 | 1 | |||||||||||||||||||
| Periodic Classification Of Elements | 5.1% | 4 | 1 | 1 | 1 | 1 | |||||||||||||||||||
| Polymers And Plastics | 5.1% | 4 | 1 | 1 | 1 | 1 | |||||||||||||||||||
| Biochemistry | 3.8% | 3 | 1 | 1 | 1 | ||||||||||||||||||||
| Chemical Reactions And Equations | 3.8% | 3 | 1 | 1 | 1 | ||||||||||||||||||||
| Environmental And Organic Chemistry | 3.8% | 3 | 1 | 1 | 1 | ||||||||||||||||||||
| Chemical Bonding And Molecular Structure | 2.6% | 2 | 1 | 1 | |||||||||||||||||||||
| Electrochemistry | 2.6% | 2 | 1 | 1 | |||||||||||||||||||||
| Polymers And Biomolecules | 2.6% | 2 | 1 | 1 | |||||||||||||||||||||
| Recent Developments In Chemistry | 2.6% | 2 | 1 | 1 | |||||||||||||||||||||
| States Of Matter | 2.6% | 2 | 1 | 1 | |||||||||||||||||||||
| Structure Of Atom | 2.6% | 2 | 1 | 1 | |||||||||||||||||||||
| Thermodynamics | 1.3% | 1 | 1 | ||||||||||||||||||||||
| All subtopics | 78 | 4 | 1 | 1 | 3 | 1 | 1 | 1 | 1 | 1 | 2 | 5 | 4 | 3 | 2 | 3 | 6 | 3 | 4 | 9 | 4 | 9 | 6 | 4 |
All Chemistry Questions (78)
Consider the following statements : 1. Statement I : Activated carbon is a good and an attractive tool to remove pollutants from effluent streams and to remediate contaminants from various industries. 2. Statement II : Activated carbon exhibits a large surface area and a strong potential for adsorbing heavy metals. 3. Statement III : Activated carbon can be easily synthesized from environmental wastes with high carbon content. Which one of the following is correct in respect of the above statements?
Consider the following statements : 1. Statement I : Some rare earth elements are used in the manufacture of flat television screens and computer monitors. 2. Statement II : Some rare earth elements have phosphorescent properties. Which one of the following is correct in respect of the above statements?
Consider the following: 1. Cigarette butts 2. Eyeglass lenses 3. Car tyres How many of them contain plastic?
What is the common characteristic of the chemical substances generally known as CL-20, HMX and LLM-105, which are sometimes talked about in media?
Consider the following statements : 1. Carbon fibres are used in the manufacture of components used in automobiles and aircrafts. 2. Carbon fibres once used cannot be recycled. Which of the statements given above is/are correct?
With reference to polyethylene terephthalate, the use of which is so widespread in our daily lives, consider the following statements : 1. Its fibres can be blended with wool and cotton fibres to reinforce their properties. 2. Containers made of it can be used to store any alcoholic beverage. 3. Bottles made of it can be recycled into other products. 4. Articles made of it can be easily disposed of by incineration without causing greenhouse gas emissions. Which of the statements given above are correct ?
Bisphenol A (BPA), a cause of concern, is a structural/key component in the manufacture of which of the following kinds of plastics?
Water can dissolve more substances than any other liquid because
Triclosan', considered harmful when exposed to high levels for a long time, is most likely present in which of the following?
In India, the use of carbofuran, methyl parathion, phorate and triazophos is viewed with apprehension. These chemicals are used as
Consider the following pairs : Commonly used / consumed materials | Unwanted or controversial chemicals likely to be found in them 1. Lipstick | Lead 2. Soft drinks | Brominated vegetable oils 3. Chinese fast food | Monosodium glutamate Which of the pairs given above is/are correctly matched ?
Which of the following is/are the example/examples of chemical change? 1. Crystallization of sodium chloride 2. Melting of ice 3. Souring of milk Select the correct answer using the code given below.
Lead, ingested or inhaled, is a health hazard. After the addition of lead to petrol has been banned, what still are the sources of lead poisoning? 1. Smelting units 2. Pens and pencils 3. Paints 4. Hair oils and cosmetics Select the correct answer using the codes given below:
Aspartame is an artificial sweetener sold in the market. It consists of amino acids and provides calories like other amino acids. Yet, it is used as a low-calorie sweetening agent in food items. What is the basis of this use ?
Which one of the following is used as an explosive?
In a dry cell (battery), which of the following are used as electrolytes?
What is Bisphenol A (BPA)?
Which one of the following pairs of metals constitutes the lightest metal and the heaviest metal, respectively?
Which one of the following is also called Stranger Gas?
Mixture of which one of the following pairs of gases is the cause of occurrence of mast of the explosions in mines?
What are Rubies and Sapphires chemically known as?
Which one of the following does not contain silver?
Which one of the following non-metals is not a poor conductor of electricity?
Which one of the following is another name of RDX?