Chemistry Previous Year Questions 2026 | MP PCS

Chemistry - MOST IMPORTANT MP PCS Previous Year Questions

Practice real questions from previous year exams of MP PCS.

📘 Chemistry in Everyday Life📚 Medicines (Antacids, Analgesics, etc.)
Q1

Laughing gas used as anesthesia by doctors is-

🎯 MP PCS (Pre) G.S. 2016-17
📘 Carbon Allotropes📚 Carbon Allotrope (Crystalline)
Q2

Which of the following is used as lubricant?

🎯 MP PCS (Pre) G.S. 2016-17
📘 Classification of Matter on the basis of Chemical Properties- I📚 Pure Substance- Compound
Q3

In the process of cooling, which of the following substance is oxide?

🎯 MP PCS (Pre) G.S. 2009
📘 Carbon Allotropes📚 Carbon Allotrope (Crystalline)
Q4

Which of the following is lubricant for heavy machines?

🎯 MP PCS (Pre) 2016-17
📘 Important Chemical Compounds📚 Misc
Q5

Which of the following is the best fire fighting material?

🎯 MP PCS (Pre) GS 1991
📘 Metallurgy📚 Metals and Their Ores
Q6

Non-metallic mineral is

🎯 MP PCS (Pre) 2020
📘 Chemistry in Everyday Life📚 Misc
Q7

Which one of the following is not a fossil fuel?

🎯 MP PCS (Pre) G.S. Ist Paper, 2016
📘 Radioactivity📚 Misc
Q8

Which of the following is not a fuel element?

🎯 MP PCS (Pre) G.S. 1997
📘 Acids, Bases and Salts📚 Name of Acid present in compounds
Q9

Chemical name of vinegar is-

🎯 MP PCS (Pre) G.S. Ist Paper, 2016
📘 Acids, Bases and Salts📚 Name of Acid present in compounds
Q10

Chemical name of vinegar is-

🎯 MP PCS (Pre) G.S. Ist Paper, 2010
📘 Acids, Bases and Salts📚 Name of Acid present in compounds
Q11

Which acid is found mainly in lemon?

🎯 MP PCS (Pre) G.S. 1998
📘 Corrosion📚 Rusting
Q12

When iron is left exposed in open air, it gets rusted. Which constituent(s) of air is/are responsible for rusting iron? 1. Oxygen, gas present in air 2. Moisture present in air 3. Carbon dioxide gas present in air

🎯 MP PCS (Pre) 2011
📘 Acids, Bases and Salts📚 pH Scale
Q13

pH value shows the numeric value of-

🎯 MP PCS (Pre) G.S. 1996
📘 Acids, Bases and Salts📚 Physical Properties of Salt
Q14

Solution of ammonium chloride is:

🎯 MP PCS (Pre) G.S. 2009
📘 Radioactivity📚 Nuclear Fission
Q15

Which of the following is used to develop nuclear bomb?

🎯 MP PCS (Pre) G.S. Ist Paper 2014
📘 Important Chemical Compounds📚 Misc
Q16

What is Blue vitriol?

🎯 MP PCS (Pre) GS, 1990
📘 Environmental Chemistry📚 Water Pollutants
Q17

Which one of the following substance does not cause pollution?

🎯 MP PCS (Pre) G.S., 2010
📘 Classification of Elements in Modern Periodic Table📚 p-block
Q18

Which one of the following Noble gas is not present in the air?

🎯 MP PCS (Pre) G.S. Ist Paper, 2016
📘 Classification of Elements in Modern Periodic Table📚 p-block
Q19

Which one of the following Noble gas is not present in the air?

🎯 MP PCS (Pre) G.S. 2009
📘 Chemistry in Everyday Life📚 Common Gases used in daily life (LPG, CNG, etc.)
Q20

Helium is preferred to hydrogen in air balloons because it-

🎯 MP PCS (Pre) GS, 1991