Chemistry Previous Year Questions 2026 | Allahabad HC RO

Chemistry - MOST IMPORTANT Allahabad HC RO Previous Year Questions

Practice real questions from previous year exams of Allahabad HC RO.

📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Metalloids
Q1

Which of the following is not a metalloid?

🎯 Allahabad HC RO 12/12/2023 Shift-I
📘 Pure Substance- Element-Classification of Matter on the basis of Chemical Properties- II📚 Metals and its properties
Q2

What type of element is Potassium ?

🎯 Allahabad HC RO 11/12/2021 Shift-I
📘 Separation of Mixtures📚 Misc
Q3

A homogenous mixture can be Seperated by :

🎯 Allahabad HC RO 10/12/2021 Shift-I
📘 Separation of Mixtures📚 Misc
Q4

Which one of the following mixtures can be separated into its components by the process involving- addition of water, stirring and filtering ?

🎯 Allahabad HC RO Exam 08/01/2017
📘 Phase Changing Processes and Their Factors📚 Evaporation
Q5

Which of the following is a surface phenomenan?

🎯 Allahabad HC RO 11/12/2022 Shift-II
📘 Phase Changing Processes and Their Factors📚 Condensation
Q6

When a gas is turned into a liquid, the process is called?

🎯 Allahabad HC RO 10/12/2021 Shift-II
📘 Solution📚 True Solution
Q7

Which one of the following is also known as solution?

🎯 Allahabad HC RO 11/12/2021 Shift-I
📘 Acids, Bases and Salts📚 Types of Indicators- Natural, Synthetic and Olfactory Indicators
Q8

Which one of the following compounds when present in its aqueous solution will turn red litmus blue?

🎯 Allahabad HC RO Exam 08/01/2017
📘 Structure of Atom📚 Electron
Q9

J.J. Thomson was awarded the "Nobel Prize" in physics in 1906 for the discovery of:

🎯 Allahabad HC RO 10/12/2021 Shift-II
📘 Electron Configuration📚 Misc
Q10

Which of the following elements has electronic configuration 2?

🎯 Allahabad HC RO 11/12/2022 Shift-II
📘 Electron Configuration📚 Shells
Q11

N shell can have a maximum number of_____ electrons.

🎯 Allahabad HC RO 10/12/2021 Shift-I
📘 Electron Configuration📚 Shells
Q12

The maximum number of electrons that can be accommodated in the third shell of an atom is :

🎯 Allahabad HC RO 11/12/2021 Shift-I
📘 Structure of Atom📚 Atomic Number
Q13

Atomic number of an element is equals to what present in the nucleus of its atom :

🎯 Allahabad HC RO 11/12/2022 Shift-II
📘 Structure of Atom📚 Misc
Q14

The atomic number and mass number of an element X are 15 and 31 respectively. Which one of these represents X ? (i) electrons=15, protons=15, neutrons=16 (ii) electrons=31, protons=15, neutrons=15 (iii) electrons=31, protons=31, neutrons=15 (iv) electrons=15, protons=16, neutrons=15

🎯 Allahabad HC RO Exam 08/01/2017
📘 Structure of Atom📚 Isotopes
Q15

An atom which has a mass number of 14 or 8 neutrons, is ____

🎯 Allahabad HC RO 05/01/2022
📘 Structure of Atom📚 Isotopes
Q16

Isotopes of an element have :

🎯 Allahabad HC RO 07/01/2022
📘 Radioactivity📚 Nuclear Fission
Q17

Nuclear fission is the source of energy in_____

🎯 Allahabad HC RO 05/01/2022
📘 Radioactivity📚 Applications of Radioactivity
Q18

Which of the following is used in the treatment of Cancer?

🎯 Allahabad HC RO 10/12/2021 Shift-I
📘 Radioactivity📚 General Facts
Q19

Which of the following is a radioactive metal?

🎯 Allahabad HC Group C Exam-2019
📘 Radioactivity📚 General Facts
Q20

Which of these elements is radio-active?

🎯 Allahabad HC RO Exam 08/01/2017