Chemistry - MOST IMPORTANT BPSC PCS Previous Year Questions
Practice real questions from previous year exams of BPSC PCS.
📘 Structure of Atom📚 Electron
Q1
The number of electrons and neutrons in an element is 18 and 20 respectively. Its mass number is
🎯 BPSC PCS 65th Pre 2019
📘 Classification of Matter on the basis of Chemical Properties- I📚 Pure Substance- Element
Q2
Which of the following is not a type of element?
🎯 BPSC PCS 65th Pre 2019
📘 Acids, Bases and Salts📚 pH Scale
Q3
The pH value of water is
🎯 BPSC PCS 65th Pre 2019
📘 Environmental Chemistry📚 Greenhouse Effect
Q4
The main component of greenhouse gases is
🎯 BPSC PCS 65th Pre 2019
📘 Organic Chemistry📚 Hydrocarbons
Q5
Oxygen is absent in
🎯 BPSC PCS 65th Pre 2019
📘 Polymer📚 Natural Rubber
Q6
Natural rubber is a polymer of
🎯 BPSC PCS 65th Pre 2019
📘 Bond Parameters📚 Bond Order
Q7
What is the bond order of CO group?
🎯 BPSC PCS 65th Pre 2019
📘 Gas Laws📚 Misc
Q8
The unit of pressure is
🎯 BPSC PCS 65th Pre 2019
📘 Matter in Our Surroundings📚 General Facts
Q9
The value of 50 °C in Fahrenheit scale is
🎯 BPSC PCS 65th Pre 2019
📘 Structure of Atom📚 Proton
Q10
The nucleus of an atom consists of
🎯 BPSC PCS 67th Pre 2022
📘 Chemical Methods for concentration of ores📚 Smelting
Q11
The metallurgical process in which a metal is obtained in a fused state is called
🎯 BPSC PCS 67th Pre 2022
📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Metals and its properties
Q12
Which among the following is also known as white metal?
🎯 BPSC PCS 67th Pre 2022
📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Metals and its properties
Q13
Consider the following statements with respect to noble metals: 1. Noble metals are found in pure form in nature. 2. Uranium and lead are examples of noble metal. Which of the above statements is/are correct?
🎯 BPSC PCS 67th Pre 2022
📘 Phase Changing Processes and Their Factors📚 Boiling or Vaporization
Q14
Consider the following statements : 1. Addition of salt to pure water increases the boiling point of water and decreases the freezing point of water. 2. When methyl alcohol is added to water boiling point of water decreases. Which of the above statements is/are correct?
🎯 BPSC PCS 67th Pre 2022
📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Metals and its properties
Q15
Which among the following would cause the bright red colour due to bursting of crackers?
🎯 BPSC PCS 67th Pre 2022
📘 Chemistry in Everyday Life📚 Medicines (Antacids, Analgesics, etc.)
Q16
From the following pairs, find the one which is correctly matched.
🎯 BPSC PCS 67th Pre 2022
📘 Organic Chemistry📚 Misc
Q17
The ultimate substance to which the carbohydrates are degraded, is
🎯 BPSC PCS 67th Pre 2022
📘 Catalyst📚 General Facts and Properties
Q18
Most of the enzymes are
🎯 BPSC PCS 67th Pre 2022
📘 Gas Laws📚 Avogadro’s Law
Q19
What is the law in which under the same conditions of temperature and pressure, equal volumes of all gases contain equal number of molecules?
🎯 BPSC PCS 67th Pre 2022
📘 Acids, Bases and Salts📚 Neutralization Reaction
Q20
Some metal oxides react with acid as well as base to produce salt and water. They are known as amphoteric oxides. The examples of amphoteric oxides are
🎯 BPSC PCS 68th Pre 2023