📘 Chemical Reactions📚 Chemical change

Q1

Which of the following changes CANNOT be reversed?

🎯 SSC JE Civil – 23/03/2021 (Shift-I)

📘 Chemical Reactions📚 Chemical change

Q2

Which of the following is a chemical change?

🎯 SSC JE Mechanical – 22/03/2021 (Shift-II)

📘 Atomic Models📚 Dalton's Atomic Theory

Q3

According to Dalton's atomic theory atoms are combined in a certain small whole number ratio to produce ..........

🎯 SSC JE Electrical 09/10/2023 (Shift-III)

📘 Atomic Models📚 Dalton's Atomic Theory

Q4

Who proposed that all matters were composed of atoms, that are indivisible and indestructible building blocks?

🎯 SSC JE Mechanical - 27/09/2019 (Shift-II)

📘 Mole Concept📚 Molecular Mass

Q5

What is the molecular mass of nitric acid?

🎯 SSC JE Electrical – 24/03/2021 (Shift-I)

📘 Atomicity📚 Misc

Q6

Which of the following can be defined as the smallest particle of an element that is capable of an independent existence?

🎯 SSC JE Civil - 29/01/2018 (Shift-II)

📘 Structure of Atom📚 Electron

Q7

Mass of a hydrogen atom is how many times the mass of an electron?

🎯 SSC JE Civil - 22/01/2018 (Shift-I)

📘 Mole Concept📚 Number of Particles Calculations

Q8

What is the mass of 4 Moles of aluminium atoms?

🎯 SSC JE Civil - 23/01/2018 (Shift-I)

📘 Mole Concept📚 Number of Particles Calculations

Q9

How many moles are present in 36 gm of water?

🎯 SSC JE Civil - 22/01/2018 (Shift-II)

📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Non-metals and its properties

Q10

Which among the following is a non-metal?

🎯 SSC JE Civil 29.10.2020 (Shift-I)

📘 Gas Laws📚 Diffusion

Q11

A drop of food colouring spreading out in a cup of water is an example of:

🎯 SSC JE Mechanical 11.12.2020 (Shift-I)

📘 Classification of Matter on the basis of Chemical Properties- I📚 Mixture (Impure substance)- Homogeneous and Heterogeneous

Q12

Which of the following is a heterogeneous mixture?

🎯 SSC JE Civil - 25/01/2018 (Shift-I)

📘 Separation of Mixtures📚 Sedimentation

Q13

What is the process called when the heavier component settles down after adding water to the mixture?

🎯 SSC JE Mechanical – 22/03/2021 (Shift-I)

📘 Separation of Mixtures📚 Misc

Q14

Which of the following is NOT advisable as a process of separation of components of a mixture?

🎯 SSC JE Mechanical – 22/03/2021 (Shift-II)

📘 Phase Changing Processes and Their Factors📚 Boiling or Vaporization

Q15

Which of the following process changes liquids directly into gases (vapour)?

🎯 SSC JE Electrical 10/10/2023 (Shift-II)

📘 Phase Changing Processes and Their Factors📚 Sublimation

Q16

In the water cycle, snow and ice get directly converted into vapours. This process is called:

🎯 SSC JE Mechanical – 22/03/2021 (Shift-II)

📘 Gas Laws📚 Diffusion

Q17

Osmosis is diffused conduction of .............

🎯 SSC JE CIVIL 11/10/2023 (Shift-I)

📘 Solution📚 Colloid and its types

Q18

Which of the following is an example of colloidal solution of liquid in solid?

🎯 SSC JE Civil - 24/01/2018 (Shift-I)

📘 Units of Concentration of Solution📚 Molarity

Q19

Which of the following formula is correct?

🎯 SSC JE

📘 Structure of Atom📚 Neutron

Q20

Who discovered the neutron among the following?

🎯 SSC JE 02/03/2017 10:00 AM.

Chemistry - MOST IMPORTANT SSC JE Previous Year Questions