Chemistry - MOST IMPORTANT UPSSSC PET Previous Year Questions
Practice real questions from previous year exams of UPSSSC PET.
📘 Important Chemical Compounds📚 Bleaching Powder
Q1
The Chemical name of Bleaching powder is also
🎯 UPSSSC PET 24.08.2021 : Shift-I
📘 Metallurgy📚 General Facts
Q2
The percentage of pure gold in 18-carat gold is
🎯 UPSSSC PET 24.08.2021 : Shift-I
📘 Acids, Bases and Salts📚 Name of Acid present in compounds
Q3
Orange contains abundance of
🎯 UPSSSC PET 24.08.2021 : Shift-I
📘 Acids, Bases and Salts📚 Name of Acid present in compounds
Q4
Sour taste of lemon is due to the presence of which of the following?
🎯 UPSSSC PET 24.08.2021 : Shift-II
📘 Chemistry in Everyday Life📚 Misc
Q5
Carcinogenic chemicals cause
🎯 UPSSSC PET 24.08.2021 : Shift-II
📘 Environmental Chemistry📚 Greenhouse Effect
Q6
Which of the following is not a green house gas?
🎯 UPSSSC PET 24.08.2021 : Shift-II
📘 Polymer📚 Types of polymers on basis of Structure- Natural, Semi-Synthetic, Synthetic
Q7
Plant cell wall is made up of what among the following?
🎯 UPSSSC PET 15.10.2022 Shift-I
📘 Acids, Bases and Salts📚 Physical Properties of Acids
Q8
The element common in all acids is:
🎯 UPSSSC PET 15.10.2022 Shift-II
📘 Polymer📚 Teflon
Q9
Non-stick cooking utensils are coated with.........
🎯 UPSSSC PET 15.10.2022 Shift-II
📘 Metallurgy📚 General Facts
Q10
'Hallmark' is used as a logo for which one of the following?
🎯 UPSSSC PET 16.10.2022 Shift-II
📘 Environmental Chemistry📚 Greenhouse Effect
Q11
Which of the following gases is not known as greenhouse gas?
🎯 UPSSSC PET 16.10.2022 Shift-II
📘 Environmental Chemistry📚 Ozone Depletion
Q12
Ozone hole refers to :
🎯 UPSSSC PET 16.10.2022 Shift-II
📘 Acids, Bases and Salts📚 Chemical Properties of Acids
Q13
Acids are stored in containers made of which materials?
🎯 UPSSSC PET 06/09/2025 Shift-1
📘 Environmental Chemistry📚 Acid Rain
Q14
Which acidic gas from the air dissolves in rainwater to form carbonic acid (H₂CO₃)?
🎯 UPSSSC PET 06/09/2025 Shift-1
📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Metals and its properties
Q15
Find the odd one out from the following.
🎯 UPSSSC PET 06/09/2025 Shift-1
📘 Chemical Reactions📚 Exothermic Reaction
Q16
Why is burning of natural gas classified as an exothermic reaction?
🎯 UPSSSC PET 06/09/2025 Shift-2
📘 Chemical Reactions📚 Endothermic Reaction
Q17
What happens to the temperature of a reaction mixture when a chemical reaction absorbs heat energy?
🎯 UPSSSC PET 06/09/2025 Shift-2
📘 Acids, Bases and Salts📚 Arrhenius's Theory of Acid and Base
Q18
When an acid is dissolved in water, the hydrogen present in it separates out as
🎯 UPSSSC PET 07/09/2025 Shift-1
📘 Chemical Reactions📚 Combustion Reaction
Q19
When natural gas (methane) burns in the oxygen of air, what are the products formed?
🎯 UPSSSC PET 07/09/2025 Shift-1
📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Metals and its properties
Q20
A copper wire has a resistance of 2 x 10⁻² ohms. If its length is 2 m and its area of cross-section is 1.7 x 10⁻⁶ m², what is the resistivity of copper?
🎯 UPSSSC PET 07/09/2025 Shift-1