Chemistry - MOST IMPORTANT UP SI Previous Year Questions
Practice real questions from previous year exams of UP SI.
📘 Matter in Our Surroundings📚 General Facts
Q1
When the temperature of a substance increases, what effect does it have on the average kinetic energy of its molecules?
🎯 UP SI, 1991
📘 Radioactivity📚 Applications of Radioactivity
Q2
What was the name of India's first nuclear reactor established in Tarapur?
🎯 UP SI, 1991
📘 General Miscellaneous📚 Miscellaneous
Q3
Which instrument is used to measure atmospheric pressure?
🎯 UP SI, 1991
📘 Oxidation and Reduction📚 Oxidation
Q4
Which of the following happens in an oxidation reaction?
🎯 UP SI STENO/ASI Clerk 02/11/2025
📘 Important Chemical Compounds📚 Misc
Q5
Solid carbon dioxide is also called...
🎯 UP SI 2021
📘 Chemistry in Everyday Life📚 Medicines (Antacids, Analgesics, etc.)
Q6
The alkaline component present in Milk of Magnesia, which is used as a laxative, is...
🎯 UP SI 2021
📘 Periodic Table📚 Modern Periodic Table
Q7
Whose periodic law was modified to adopt atomic number as the basis for the modern periodic table?
🎯 UP SI 2021
📘 Radioactivity📚 Alpha rays
Q8
Alpha particles are ______ charged.
🎯 UP SI 2021
📘 Radioactivity📚 Nuclear Fusion
Q9
The source of solar energy is:
🎯 UP SI (Pre) 2011
📘 Electrochemistry📚 Applications of Electrolysis
Q10
What is the process in which a thick oxide layer of aluminum is developed on aluminum objects, which can be colored for an attractive finish?
🎯 UP SI 2021
📘 Important Chemical Compounds📚 Misc
Q11
Which chemical compound is known as blue vitriol and is mainly used as a pesticide, mordant, and fungicide?
🎯 UP SI 2021
📘 Carbon Allotropes📚 Carbon Allotrope (Crystalline)
Q12
Graphite, diamond, and buckminsterfullerene are allotropes of which element?
🎯 UP SI 2021
📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Metalloids
Q13
Elements like Boron, Silicon, and Germanium are classified as...
🎯 UP SI 2021
📘 Classification of Elements in Modern Periodic Table📚 d-block
Q14
An element with atomic number 46 belongs to which block of the periodic table?
🎯 UP SI 2017
📘 Important Chemical Compounds📚 Bleaching Powder
Q15
To make bleaching powder, which of the following gases is passed through 'slaked lime' (calcium hydroxide)?
🎯 UP SI 2017
📘 Important Metals and Their Ores📚 List of Important metals and Their ores
Q16
Which of the following is an ore of zinc?
🎯 UP SI 2017
📘 Polymer📚 Polythene
Q17
What polymer is used to make a wash bottle?
🎯 UP SI 2017
📘 Polymer📚 Misc
Q18
Which material is used to make bulletproof vests?
🎯 UP SI 2017
📘 Atomic Models📚 Rutherford Atomic Model
Q19
Which experiment by Rutherford proved the existence of the nucleus?
🎯 UP SI 2017
📘 Chemistry in Everyday Life📚 Pesticides and Insecticides
Q20
Which of these is not an artificial pesticide?
🎯 UP SI 2017