If an atom has atomic number = 6 and number of neutrons = 10, then what is the atomic mass of the atom? [Junior Engineer 2024 Civil Paper I]

Identify a monoatomic molecule. [Combined Graduate Level Examination Tier I]

Buckminsterfullerene is a nanoparticle characterised by spherical geometry and a hollow interior which contains how many carbon atoms? [Combined Graduate Level Examination Tier I 2022]

What is the atomicity of Chlorine? [Combined Graduate Level Examination Tier I 2023]

Which element’s symbol is derived from the Greek name hydrargyrum, meaning ‘liquid silver’ – indicating its shiny surface? [CHSL 2021 Tier I]

What do you call the distance between the centre of the nucleus and the outermost shell of an isolated atom? [Constable GD Examination 2022]

In the electronic configuration of an atom, What does ‘n’ signify in the formula 2n2? [CHSL 2021 Tier I]

What is the atomic mass of Nitrogen? [Constable GD Examination 2022]

How many electrons does a hydrogen molecule have in its K shell? [SICPO Paper I 2024]

The atomic number of lead is: [Combined Graduate Level Examination Tier I 2022]

What is the atomic number of hydrogen in the Mendeleev's periodic table? [MTS Non technical and Havaldar Examination 2021]

What is the atomic mass of sodium? [CHSL Exam 2022 Tier I]

Maximum number of electrons that can filled in a shell is given by _______ where n is orbit number. [Constable GD Examination 2022]

If n is the energy level index for an atom, then for the M shell, n is equal to: [Constable GD 2021]

Which of the following isotopes is used as a fuel in nuclear power plants for generating electricity? [CHSL Exam 2024 Tier I]

How many maximum electrons can M shell have? [Combined Graduate Level Examination Tier I 2022]

Which of the following pairs of 'number – composition' is correct?
I. Atomic number – number of protons
II. Mass number – Sum of number of neutrons and protons [CHSL Exam 2022 Tier I]

Identify the element that does NOT belong to Period 6 of Modern Periodic Table. [Combined Graduate Level Examination Tier I 2023]

Identify the group of the periodic table to which cobalt belongs. [CHSL 2021 Tier I]

What chemical element does ‘N’ stand for in the periodic table? [MTS Non technical and Havaldar Examination 2021]

Which of the following elements has variable valency? [Combined Graduate Level Examination Tier I 2023]

An image of which of the following elements is shown by the map of Cyprus from which the element got its name? [MTS Non Tech Havaldar CBIC and CBN Examination 2023]

Which of the following is a highly electropositive element that readily gives up an electron in order to obtain a stable electronic configuration? [Combined Graduate Level Examination Tier I 2023]

Which of the following groupsconsists of elements that are non-reactive, monoatomic elements with extremely low boiling points? [CHSL 2021 Tier I]

What will be the atomic number of an element X which is placed in period 2 and group 17? [Combined Graduate Level Examination Tier I 2023]

The name of which element is derived from an Anglo-Saxon word and its symbol comes from the Latin word ‘Aurum’? [CHSL 2021 Tier I]

In which group are the non-metal elements placed in a vertical column on the right side of the periodic table? [Combined Graduate Level Examination Tier I 2022]

Which non-metal among the following is poly-atomic? [Constable GD 2021]

Which of the following group elements are called chalcogens? [Combined Graduate Level Examination Tier I 2023]

Which of the following metals having atomic number 3 is a soft, silvery metal with very low density that reacts vigorously with water and corrodes quickly in air? [CHSL 2021 Tier I]

Which of the following metals is susceptible to fire if kept in the open?
[Constable GD 2021]

Identify the chemical name for Ge.   [CHSL 2021 Tier I]

Sodium is kept in which of the following? [Constable GD Examination 2022]

What is the atomic number of Carbon as per Mendeleev's Periodic Table? [MTS Non technical and Havaldar Examination 2021]

Which of the following is a chemical element with the atomic number 10? [Constable GD 2021]

Which of the following is an example of metalloid? [MTS Non technical and Havaldar Examination 2021]

Which of the following element has atomic number 12? [Constable GD Examination 2022]

Identify the number of electrons found in the outermost shell of halogen. [SICPO Paper I 2024]

What is the number of electrons found in the outermost shell of the halogens? [Constable GD Examination 2022]

Identify the last element from the fifth period. [Combined Graduate Level Examination Tier I 2023]

Which among the following elements behaves like alkali metals as well as halogens in its properties? [Constable GD Examination 2022]

Which of the following is a soft metal that ignites in air and reacts violently with water and has atomic number 37 in the periodic table? [CHSL 2021 Tier I]

Identify an anomaly element that belongs to both group 1 and group 17. [SICPO Paper I 2023]

The mass number of titanium is: [Combined Graduate Level Examination Tier I 2022]

Which chemical element of Group 18 of the periodic table is produced by the natural radioactive decay of uranium in soils and rocks? [SICPO Paper I 2023]

Which of the following pairs of 'elements – valency' is correct?
I. Boron – 2
II. Fluorine – 3
[CHSL Exam 2022 Tier I]

The chemical symbol of potassium is _______.
[Constable GD 2021]

Which of the following are members of 15 naturally occurring metallic chemical elements whose atomic numbers are between 57 and 71? [Combined Graduate Level Examination Tier I 2022]

Identify the word that means vertical columns of Periodic Table. [CHSL 2021 Tier I]

Which of the following metals reacts violently with cold water? [MTS Non technical and Havaldar Examination 2021]