Chemistry - MOST IMPORTANT UPSSSC Lower PCS Previous Year Questions
Practice real questions from previous year exams of UPSSSC Lower PCS.
📘 Chemistry in Everyday Life📚 Common Gases used in daily life (LPG, CNG, etc.)
Q1
Which of the following gases is commonly filled in electric bulbs?
🎯 UPSSSC Lower PCS Mains 21/10/2021 Paper-II
📘 Physical States of Matter and Their properties📚 Gas
Q2
Which state of matter has the minimum density?
🎯 UPSSSC Lower PCS Mains 21/10/2021 Paper-II
📘 Structure of Atom📚 Misc
Q3
What is the force binding the proton and neutron in a nucleus called?
🎯 UPSSSC Lower PCS Exam - 30-09-2019 (Shift-I)
📘 Structure of Atom📚 Isotopes
Q4
Protium, Deuterium and Tritium are kept in which of the following categories?
🎯 UPSSSC Lower PCS Exam - 30-09-2019 (Shift-I)
📘 Structure of Atom📚 Electron
Q5
Who is credited with the discovery of the Electron?
🎯 UPSSSC Lower PCS II - 15-07-2018
📘 Structure of Atom📚 Neutron
Q6
Who discovered the Neutron (a particle that is part of the nucleus of an atom)?
🎯 UPSSSC Lower PCS II - 15-07-2018
📘 Organic Chemistry📚 Hydrocarbons
Q7
Which of the following gases is used for the untimely ripening of fruits?
🎯 UPSSSC Lower PCS Mains 21/10/2021 Paper-II
📘 Organic Chemistry📚 Hydrocarbons
Q8
Which of the following gases is generally the cause of explosion in coal mines?
🎯 UPSSSC Lower PCS Mains 21/10/2021 Paper-II
📘 Physical States of Matter and Their properties📚 Gas
Q9
Which of the following statements is true regarding gases?
🎯 UPSSSC Lower PCS II (Re-exam) (28-07-2019)
📘 Electrochemistry📚 Electrochemical Cells (Galvanic/Voltaic Cells)
Q10
The cathode used in a dry cell is?
🎯 UPSSSC Lower PCS II- 06-03-2016
📘 Electrochemistry📚 Electrolytes and Non-electrolytes
Q11
Due to the flow of which of the following does an electrolyte pass electric current?
🎯 UPSSSC Lower PCS I- 28-02-2016
📘 Acids, Bases and Salts📚 Types of Indicators- Natural, Synthetic and Olfactory Indicators
Q12
At which pH value limit does Methyl Orange indicator change its color?
🎯 UPSSSC Lower PCS Exam - 01-10-2019 (Shift-I)
📘 Acids, Bases and Salts📚 pH Scale
Q13
Which of the following values represents the pH of a basic solution?
🎯 UPSSSC Lower PCS Exam - 30-09-2019 (Shift-I)
📘 Important Chemical Compounds📚 Misc
Q14
What is the industrial name of Epsom?
🎯 UPSSSC Lower PCS III - 26-06-2016
📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Non-metals and its properties
Q15
Which of the following has the highest calorific value?
🎯 UPSSSC Lower PCS First- 28-02-2016
📘 Laws of Chemical Combinations📚 Laws of Definite Proportions
Q16
What is the ratio of hydrogen and oxygen by mass in water?
🎯 UPSSSC Lower PCS Second- 06-03-2016
📘 Chemical Reactions📚 Combustion Reaction
Q17
Which of the following gases is necessary for combustion?
🎯 UPSSSC Lower PCS Exam – 30-09-2019 (Shift-I)
📘 Discoveries📚 Misc
Q18
Who discovered oxygen?
🎯 UPSSSC Lower PCS First- 28-02-2016
📘 Pure Substance- Compound-Classification of Matter on the basis of Chemical Properties- II📚 Inorganic Compound
Q19
Laughing gas is a compound of which of the following?
🎯 UPSSSC Lower PCS II (Re-exam) (28-07-2019)
📘 Pure Substance- Compound-Classification of Matter on the basis of Chemical Properties- II📚 Inorganic Compound
Q20
What is 'laughing gas'?
🎯 UPSSSC Lower PCS Third - 26-06-2016