ICSE Class 10 Chemistry Question Paper 2024: The ICSE Class 10 Chemistry exam was conducted today from 11:00 AM to 1:00 PM. This was Science Paper 2 for the ICSE Exam 2024. In this article, we have provided the ICSE Class 10 Chemistry question paper 2024 along with its answer key. Students who appeared for the ICSE Chemistry exam can verify their answers using the answer key provided here. All answers have been crafted and reviewed by the subject matter experts hence are best to assess how well you have performed in the exam.
You can also check the link below to know the detailed analysis of the ICSE Class 10 Chemistry Exam 2024 including students’ reactions and experts’ opinions on the difficulty level of the exam.
| Exclusive! ICSE Class 10 Chemistry Paper Analysis 2024: Student Feedback & Difficulty Level |
ICSE Class 10 Chemistry Paper Pattern 2024
The ICSE Class 10 Chemistry question paper was of 80 marks. The time allowed to write the paper was 2 hours.
- There were total 8 questions divided into two sections:
| Section | Type of Questions | Marks |
| Section A | MCQs and Very Short Answer Type Questions of 1 mark each | 40 Marks |
| Section B | Short and Long Answer Type Questions of 2, 3 and 4 marks | 40 Marks |
- All the questions in Section A were compulsory.
- In Section B students were required to answer any four questions.
ICSE Class 10 Chemistry Question Paper 2024
Download the complete question paper from the link provided below:
ICSE Class 10 Chemistry Question Paper 2024 PDF |
ICSE Class 10 Chemistry Paper Answer Key 2024
SECTION A
Question 1:Choose the correct answers to the questions from the given options.
(i)Unsaturated hydrocarbons undergo:
(a) Addition reaction
(b) Substitution reaction
(c) Oxidation reaction
(d) Redox reaction
Answer: (a) Addition reaction
(ii)In the 2nd period Neon has maximum Ionization Potential because:
(a) It has unstable electronic configuration.
(b) It easily accepts electrons.
(c) It easily loses electrons.
(d) The outer most shell is completely filled.
Answer: (d) The outer most shell is completely filled.
Explanation: Neon has 8 electrons in its outermost shell. Thus it is highly stable and therefore it requires high amount of energy to lose an electron from its outer shell, resulting in a high Ionization Potential.
(iii)Copper, Zinc and Tin are the metals alloyed to form:
(a) Duralumin
(b) Brass
(c) Bronze
(d) Solder
Answer: (c) Bronze
(iv)The metal hydroxide which reacts with both acids and alkalis to form salt and water is:
(a) Calcium hydroxide
(b) Magnesium hydroxide
(c) Aluminium hydroxide
(d) Ferric hydroxide
Answer: (c) Aluminium hydroxide; Aluminium hydroxide is amphoteric, i.e., it has both basic and acidic properties.
(v)Reaction of an alcohol with a carboxylic acid in the presence of concentrated H2SO4 is termed as:
(a) Halogenation
(b) Esterification
(c) Hydrogenation
(d) Dehydrohalogenation
Answer:(b) Esterification
Explanation: The reaction of an alcohol with a carboxylic acid in the presence of conc. H2SO4 forms an ester. This is termed an esterification reaction.
(vi)Conversion of Ethanol to Ethene by the action of concentrated sulphuric acid involves:
(a) Dehydration
(b) Dehydrogenation
(c) Dehydrohalogenation
(d) Hydrolysis
Answer: (b) Dehydrogenation
Explanation: When the Ethanol (CH3CH2OH) reacts with concentrated Sulphuric acid (H2SO4), it will produce Ethene (CH2=CH2) and Water (H2O) molecule.
CH3CH2OH + conc. H2SO4 → CH2=CH2 + H2O
(vii) The oxidizing agent in the equation S + 2H2SO4 →3SO2 + 2H2O is:
(a) Sulphur
(b) Sulphuric acid
(c) Sulphur dioxide
(d) Water
Answer: (b) Sulphuric acid
Explanation: When concentrated sulphuric acid reacts with sulphur to produce sulphur dioxide gas and water. Thus, sulphuric acid (H2SO4) acts as a strong oxidizing agent as it oxidizes S into SO2.
(viii)Electron Affinity is maximum in:
(a) Mg
(b) Ar
(c) Li
(d) Br
Answer: (d) Br
Explanation: Electron affinity tends to increase as we move from left to right side of the periodic table.
(ix)The compound that is not a constituent of the electrolytic mixture used in the Hall-Heroult's process is:
(a) Al2O3
(b) NaAlO2
(c) NaзAlF6
(d) CaF2
Answer: (b) NaAlO2
(x)On passing ammonia gas over heated copper oxide for some time, a reddish-brown residue is left behind. What property of ammonia is demonstrated here?
(a) Basic property
(b) Oxidising property
(c) Reducing property
(d) Acidic property
Answer: (c) Reducing property
Explanation: When dry ammonia is passed over heated copper oxide, ammonia is oxidized to nitrogen and water. Here, copper oxide is reduced to copper and turns from black to Reddish-brown.
(xi)Rotten egg smell is due to the liberation of:
(a) HCl gas
(b) H2S gas
(c) Cl2 gas
(d) SO2 gas
Answer: (b) H2S gas
(xii) Ammonia gas is collected by downward displacement of air since ammonia is
(a) very slightly soluble in water.
(b) heavier than air.
(c) lighter than air.
(d) insoluble in water.
Answer: (c) lighter than air
(xiii)Which of the following would occupy 22.4 litres at S.T.P.?
1.32g of oxygen gas
2.2 moles of hydrogen gas
3.6.022 x 1023 molecules of ammonia
(a) 1 & 2
(b) 1 & 3
(c) 2 & 3
(d) 1,2 & 3
[Atomic weights: O=16, H=1, N=14]
Answer: (b) 1 & 3
Explanation: 1 mole of all gases at STP conditions occupy a volume of 22.4 L.
(xiv)In the molecule of water, oxygen atom has:
(a) One shared pair of electrons.
(b) Three shared pairs of electrons.
(c) Two lone pairs of electrons.
(d) One lone pair of electrons.
Answer: (c) Two lone pairs of electrons
Explanation: In a water (H2O) molecule, oxygen is bonded to two hydrogen atoms.
Total number of valence electrons present in oxygen atom is 6. It shares one electron with each hydrogen atom to form two single bonds while the remaining four electrons do not participate in any bond formation and are present as two lone pairs.
(xv)A mineral from which the metal can be extracted economically and conveniently is known as:
(a) Matrix
(b) Ore
(c) Flux
(d) Alloy
Answer: (b) Ore
Answers for the remaining questions are to be updated in a short while!
Also Check:
Comments
All Comments (0)
Join the conversation