ICSE Class 10 Chemistry 2023 Answer Key & Question Papers

By Amar Kumar


Looking for the ICSE Class 10 Chemistry Answer Key 2023? Browse our PDF format expert-reviewed question papers and answer key here for your reference. During exam season, students commonly discuss the question paper afterward.


The CISCE conducts secondary and higher secondary board exams annually, including the ICSE Class 10 Chemistry exam, which took place on March 20, 2023, from 11:00 AM to 1:00 PM. Chemistry is an essential and challenging part of the Science (Code: 52) course for the ICSE 10th standard.

After an exam, many students tend to analyze the question paper. While this isn’t a recommended exercise as it can negatively affect your mood and reveal errors in your answers, it’s an irresistible habit for many, especially during important and challenging exams such as Chemistry. However, reviewing the answer key can also expose errors in the question paper, including incorrect formulas, diagrams, or numerical values.

To be well-prepared for disputes and to obtain an early idea of your exam score, we have the expert-reviewed ICSE Class 10 Chemistry answer key 2023. It’s advisable to refer to this answer key rather than analyzing the question paper on your own.

ICSE Class 10 Chemistry answer key

Table of Contents


ICSE Class 10 Chemistry Exam 2023: Access the Answer Key Here

The CISCE board has not yet released the 2023 Class 10 Chemistry question paper or answer key, and there is no expected release date. However, you can still obtain the question paper PDF and expert-prepared answer key for the ICSE Class 10 Chemistry exam here.

ICSE Class 10 Chemistry Paper 2023 Answer Key

Question Option (a) Option (b) Option (c) Option (d) Answer
(i) An element in period 3, whose electron affinity is zero Neon Sulphur Sodium Argon (d) Argon
(ii) An element with the largest atomic radius among the following is Carbon Nitrogen Lithium Beryllium (c) Lithium
(iii) The compound that is not an ore of aluminum Cryolite Corundum Fluorspar Bauxite (c) Fluorspar
(iv) The vapor density of CH, OH is, (AL WE C-12, H-1, 0-16) 32 18 16 34 (c) 16
(v) Which of the following reactions takes place at the anode during the electroplating of an article with silver? Ag-1e- →Ag1+ Ag+1e- →Ag1- Ag-1e- →Ag None of the above (a) Ag-1e- →Ag1+
Question Option (a) Option (b) Option (c) Option (d) Answer
(vi) The metallic hydroxide which forms a deep inky blue solution with excess ammonium hydroxide solution is Fe(OH)2 Cu(OH)2 Ca(OH)2 Fe(OH)3 (b) Cu(OH)2
(vii) An example of a cyclic organic compound is Propene Pentene Butene Benzene (d) Benzene
(viii) In the laboratory preparation, HCI gas is dried by passing through Dilute nitric acid Concentrated sulphuric acid Dilute sulphuric acid Acidified water (b) Concentrated sulphuric acid
(ix) The nitrate which on thermal decomposition leaves behind a residue that is yellow when hot and white when cold Lead nitrate Ammonium nitrate Copper nitrate Zinc nitrate (d) Zinc nitrate
(x) The salt formed when concentrated sulphuric acid reacts with KNO, above 200°C K₂SO4 K2SO3 KHSO4 KHSO3 (a) K₂SO4
(xi) The property exhibited by concentrated sulphuric acid when it is used to prepare hydrogen chloride gas from potassium chloride Dehydrating property Drying property Oxidizing property Non-volatile acid property (d) Non-volatile acid property
(xii) The hydrocarbon formed when sodium propanoate and soda lime are heated together Methane Ethane Ethene Propane (b) Ethane
(xiii) The acid which does not form acid salt by a basic radical H2CO3 H2PO4 H₂SO4 CH3COOH (d) Phenolphthalein

Question 2: (i)Match Column A with Column B

Column A Column B
(a) Sodium Chloride 1. has two shared pair of electrons
(b) Methane 2. has high melting and boiling points
(c) Hydrogen chloride gas 3. a greenhouse gas
(d) Oxidation reaction 4. has low melting and boiling points
(e) Water 5. Zn-2e-→Zn2+
  6. S+2e- →S²-

Answer:  A: 2 , B: 3 , D: 4 , D: 5, E: 1

Question 2: (iI)

(a) Identify the constituent of the electrolyte mixture that contains a divalent metal.

(b) Specify the name of the powdered substance ‘X’ that is sprinkled on top of the electrolyte mixture.

(c) What is the term used to refer to this process?

(d) Write down the reactions taking place at the anode ‘Y’ and cathode ‘Z’, respectively.

Answer:  (a) Fluorspar (b) X=Coke (c) Hall Heroult Process (d) Anode (Y): O2- – 2e → O O + O → OC + O→ CO2 Cathode (Z): AI+3+3e→Al

(iii) Choose the appropriate option from the given brackets to fill in the blanks:

(a) Metals are good as [oxidizing agents/reducing agents].

(b) Non-polar covalent compounds are [good/bad] conductors of heat and electricity.

(c) The higher the pH value of a solution, the more [acidic/alkaline] it is.

(d) [Silver chloride/Lead chloride] is a white precipitate that dissolves in excess of the Ammonium hydroxide solution.

(e) The conversion of ethene to ethane is an example of [hydration/hydrogenation].

Answers: (a) reducing agents (b) bad (c) alkaline (d) Silver chloride (e) hydrogenation

(iv) Match the following terms/processes with their corresponding definitions:

Term/Process Definition
(a) Electron affinity The energy is released when a gaseous atom accepts an electron to form an anion.
(b) Catenation The tendency of an element to form chains of identical atoms.
(c) Haber-Bosch process The name of the process by which Ammonia is manufactured on a large scale.
(d) Basic salt A type of salt formed by the partial replacement of hydroxyl radicals with an acid radical.
(e) Vapour density The ratio of the mass of a certain volume of gas to the same volume of hydrogen is measured under the same conditions of temperature and pressure.

ICSE Class 10 Result Date 2023

The tentative schedule for the ICSE Class 10 board exam results is May or June 2023. After the official declaration of results, compartment exams will commence. You can check your ICSE Class 10 Results using the provided links once they become available. In the meantime, please stay tuned.


FAQ ICSE Class 10 Chemistry Answer Key 2023 and Question Papers, Download PDF

Has the answer key for the ICSE Class 10 Chemistry Question Paper 2023 been released?

The CISCE Board will release the 2023 ICSE Class 10 Chemistry Question Paper and Answer Key on their website, Until then, you can view and refer to the expert-prepared answer key of the 2023 ICSE Class 10 Chemistry Exam

What is the process to check the PDF of the ICSE Class 10 Chemistry Question Paper answer key 2023?

The ICSE Class 10 Chemistry Question Paper Answer Key 2023 in PDF format can be checked on . The CISCE Board will also make the question papers available soon on their website.


Amar Kumar is a graduate of Journalism, Psychology, and English. Passionate about communication - with words spoken and unspoken, written and unwritten - he looks forward to learning and growing at every opportunity. Pursuing a Post-graduate Diploma in Translation Studies, he aims to do his part in saving the 'lost…

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