Chemistry - MOST IMPORTANT SSC CHSL Previous Year Questions
Practice real questions from previous year exams of SSC CHSL.
📘 Physical States of Matter and Their properties📚 Gas
Q1
In which state of matter kinetic energy of molecules becomes more than force of attraction between them, due to which they lie for apart and become in free motion?
🎯 SSC CHSL 27/05/2022 (Shift-III)
📘 Atomic Models📚 Dalton's Atomic Theory
Q2
Who among the following is considered as the 'Father of Modern Atomic Theory'?
🎯 SSC CHSL 04/08/2021 (Shift-I)
📘 Types of Chemical Bond📚 Covalent Bond
Q3
Which of the following is a polar molecule?
🎯 SSC CHSL 09/08/2021 (Shift-I)
📘 Mole Concept📚 Number of Particles Calculations
Q4
Atomic mass of Oxygen is 16 and atomic number is 8. What is the mass (in grams) of 2 moles of oxygen gas?
🎯 (SSC 10+2 CHSL 07.02.17, 1.15 pm)
📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Metals and its properties
Q5
Which one of the following features is not shown by metals?
🎯 SSC CHSL 09/08/2021 (Shift-I)
📘 Classification of Matter on the basis of Chemical Properties- I📚 Mixture (Impure substance)- Homogeneous and Heterogeneous
Q6
Which of the following statement is not correct with respect to a mixture?
🎯 SSC CHSL (Tier-1) – 09/03/2023 (Shift-I)
📘 Separation of Mixtures📚 Fractional Distillation
Q7
By using Vapour distillation technique which kind of substance can be separated?
🎯 SSC CHSL 02/06/2022 (Shift-III)
📘 Separation of Mixtures📚 Sedimentation
Q8
is the process of allowing particles in suspension in water to settle out of the suspension under the effect of gravity.
🎯 SSC CHSL 16/04/2021 (Shift-I)
📘 Phase Changing Processes and Their Factors📚 Sublimation
Q9
Which of the following changes occure on heating the camphor?
🎯 SSC CHSL (Tier-1) – 11/08/2023 (Shift-III)
📘 Separation of Mixtures📚 Evaporation
Q10
Using which of the following processes can one separate a solute from its solution?
🎯 (SSC 10+2 CHSL 11.01.17, 1.15 pm)
📘 Structure of Atom📚 Neutron
Q11
Who discovered the neutron among the following?
🎯 SSC CHSL (Tier-1) - 09/03/2023 (Shift-I)
📘 Atomic Models📚 Rutherford Atomic Model
Q12
Which of the following statement is not correct with respect to rutherford's atomic model
🎯 SSC CHSL (Tier-1) – 21/03/2023 (Shift-II)
📘 Atomic Models📚 Rutherford Atomic Model
Q13
When did Rutherford published results of gold -foil experiment through which it was noticed that scattering becomes due to presence of rigid core inside nude us of the atom?
🎯 SSC CHSL 01/06/2022 (Shift-I)
📘 Atomic Models📚 Thomson's Atomic Model
Q14
In 1904 who discovered plum-pudding model of atom, according to which positive charge is spread over a sphere and electrons are embedded to the positive charge as resins are scattered in plum-pudding?
🎯 SSC CHSL 08/06/2022 (Shift-I)
📘 Radioactivity📚 Alpha rays
Q15
Which among the following is false about alpha particles?
🎯 (SSC 10+2 CHSL 10.01.17, 1.15 pm)
📘 Radioactivity📚 Alpha rays
Q16
Alpha particles are..........?
🎯 (SSC 10+2 CHSL 02.02.17, 1.15 pm)
📘 Structure of Atom📚 Misc
Q17
Which among the following is present inside the nucleus of an atom?
🎯 (SSC 10+2 CHSL 07.01.17, 10 am)
📘 Structure of Atom📚 Proton
Q18
The mass of proton and mass of .........is same.
🎯 (SSC 10+2 CHSL 11.01.17, 1.15 pm)
📘 Structure of Atom📚 Electron
Q19
Electrons move around the nucleus in........... motion.
🎯 (SSC 10+2 CHSL 21.01.17, 4.15 pm)
📘 Structure of Atom📚 Electron
Q20
There are stable, negatively charged paticles found in all atoms ?
🎯 SSC CHSL-08/07/2019 (Shift-I)