In JEE Advanced Chemistry, d-block elements are considered as a moderate topic, carrying a weightage of around 3% with 1-2 questions asked each year. Most of the questions are conceptual, and focused basically on elements.
The d-block elements, also known as transition metals like iron, copper, and zinc which are essential elements used in various industrial processes. The elements are commonly colorful compounds and include Groups of 3 to 12 elements. These are used in manufacturing, construction, coins, and for beautification as well.
Must Read Articles:
- Download JEE Advanced Syllabus 2025
- Download JEE Advanced 2024 Paper With Detailed Solutions
- JEE Advanced Previous Year Question Paper PDF Download
Listed below is the list of d-block elements questions with detailed solutions asked in JEE Advanced exam 2025:
Question 1:
Fusion of MnO2 with KOH in presence of O2 produces a salt W. Alkaline solution of W upon electrolytic oxidation yields another salt X. The manganese containing ions present in W and X, respectively, are Y and Z. Correct statement(s) is(are):
Question 2:
The correct option(s) to distinguish nitrate salts of Mn2+ and Cu2+ taken separately is (are)-
Question 3:
Which of the following combination will produce H2 gas?
Question 4:
The correct statement(s) about Cr2+ and Mn3+ is (are) - [Atomic numbers of Cr=24 and Mn=25]-
Question 5:
A solution of colourless salt H on boiling with excess NaOH produces a non-flammable gas. The gas evolution ceases after sometime. Upon addition of Zn dust to the same solution, the gas evolution restarts. The colourless salt(s) H -
- NH4NO3
- NH4NO2
- NH4Cl
- (NH4)2SO4
Question 6:
Native silver metal forms a water soluble complex with a dilute aqueous solution of NaCN in the presence of
- nitrogen
- oxygen
- carbon dioxide
- argon
Question 7:
A solution of a metal ion when treated with KI gives a red precipitate which dissolves in excess KI to give a colourless solution. Moreover, the solution of metal ion on treatment with a solution of cobalt (II) thiocyanate gives rise to a deep blue crystalline precipitate. The metal ion is
Question 8:
Which of the following pair is expected to exhibit same colour in solution?
Question 9:
Which of the following will not be oxidised by O3 ?
- KIFeSO4
- KMnO4
- K2MnO4
- MnO4
Question 10:
The pair of compounds having metals in their highest oxidation state is
Question 11:
(NH4)2Cr2O7 on heating gives a gas which is also given by –
Question 12:
When I− is oxidised by MnO4− in alkaline medium, I− converts into –
JEE Advanced Exam Pattern 2025
The JEE Advanced exam consists of two papers i.e. 1 and 2 and it is compulsory for students to appear in both papers. Paper 1 will be conducted in the morning and Paper 2 in the afternoon. Students can appear for the exam in either of the languages English or Hindi.
JEE Advanced 2025 Exam Pattern Highlights
| Particulars | Highlights |
|---|---|
| Total Number of Paper | Two Paper (Paper 1 and 2) |
| Total Subjects | 3 (Mathematics, Physics, Chemistry) |
| Total Sections | 4 |
| Total Questions | 102 |
| Total Questions in each Subject | 17 |
| Total Marks | 360 |
| Total Marks in each Paper | 180 |
| Total Marks in each Subject | 60 |
| Negative Marking | Yes ( except Section III in Paper 1 and 2 and Section IV in Paper 2) |
| Type of Questions | MCQ, NAT, Statement-based, Match the Following |
| Exam Duration | 3 hours each paper |
JEE Advanced Chapter-wise Weightage
The JEE Advanced chapter-wise weightage helps you understand which topics carry more importance in the exam. By focusing on high-weightage chapters, you can improve your exam preparation. For example, in Mathematics, topics like Calculus and Algebra usually carry about 50-60% of the questions, while in Physics, Mechanics and Electromagnetism contribute more.
JEE Advanced Exam – Topic-wise (Chemistry)
| Topics | Weightage | Total Marks | Total Questions |
|---|---|---|---|
| Class 11 | |||
| Inorganic Chemistry-I (Chemical Bonding and Molecular Structure, p-Block Elements -Group 13 & 14) | 16% | 19 | 5 |
| Organic Chemistry-I (Benzene, Basic Principles of Organic Chemistry) | 11% | 13 | 4 |
| Physical Chemistry-I (Chemical Thermodynamics, Chemical and Ionic Equilibrium, Mole Concept-I, Atomic Structure, States of Matter: Gases and Liquids) | 24% | 29 | 8 |
| Class 12 | |||
| Inorganic Chemistry-II (Coordination Compounds,Isolation of Metals, d-Block Elements) | 11% | 13 | 4 |
| Organic Chemistry-Il (Phenols, Alkyl Halides, Biomolecules, Amines, Ethers) | 23% | 28 | 8 |
| Physical Chemistry-II (Surface Chemistry, Chemical Kinetics, Solid State, Electrochemistry, Solutions) | 15% | 8 | 5 |
Detailed JEE Advanced 2025 Marking Scheme
Candidates must note that the JEE Advanced marking scheme will be the same for both Paper 1 and Paper 2. However, the marks allotted to each section of the subjects will be different. Here is the detailed marking scheme for each section of the exam paper:
Marking Scheme for Paper 1 and Paper 2
| Sections | Total Marks | Marking Scheme |
|---|---|---|
| Section I | 12 | +3 for every correct answer, 0 marks for unanswered questions. |
| Section II | 12 | +4 if all correct options are selected; +3 if three out of four correct options are selected; +2 if two out of 3+ correct options are selected; +1 if one out of 2+ options is selected; 0 if unanswered. |
| Section III | 24 | +4 if only the correct integer value entered, 0 if unanswered or the answer is wrong. |
| Section IV | 12 | +3 if an option with the correct combinations is chosen; 0 if unanswered in Paper 1.+3 if the correct value is put; 0 if unanswered in Paper 2. |
Previous Years’ Question Paper
JEE Advanced 2024 Question Paper PDF
| Paper | Question Paper PDF | Answer Key PDF |
|---|---|---|
| Question Paper 1 PDF | Download PDF | Download PDF |
| Question Paper 2 PDF | Download PDF | Download PDF |
JEE Advanced 2023 Question Paper PDF
| Paper | Question Paper PDF | Answer Key PDF |
|---|---|---|
| Question Paper 1 PDF | Download PDF | Download PDF |
| Question Paper 2 PDF | Download PDF | Download PDF |
JEE Advanced 2022 Question Paper PDF
| Paper | Question Paper PDF | Answer Key PDF |
|---|---|---|
| Question Paper 1 PDF | Download PDF | Download PDF |
| Question Paper 2 PDF | Download PDF | Download PDF |
JEE Advanced 2021 Question Paper PDF
| Question Paper | PDF Download | ||
|---|---|---|---|
| Question Paper 1 PDF | Physics | Chemistry | Maths |
| Question Paper 2 PDF | Physics | Chemistry | Maths |
JEE Advanced 2020 Question Paper
| Question Paper | Question Paper PDF | Answer Key PDF |
|---|---|---|
| Question Paper 1 PDF | Download PDF | Download PDF |
| Question Paper 2 PDF | Download PDF | Download PDF |
Frequently Asked Questions:
Q1. Are d-Block Elements elements important for JEE Advanced exam 2025?
Answer: Yes, d - block element is an important chapter for JEE Advanced preparation. It helps in understanding the periodic table which covers different elements, which is the basis of Inorganic Chemistry.
As per the previous years the weightage and number of questions of d-Block Elements in the JEE Advanced exams:
| Year | Number of Questions on d-Block Elements | Weightage |
|---|---|---|
| 2023 | 1-2 questions | 2% |
| 2022 | 1 question | 1% |
| 2021 | 1-2 questions | 2-3% |
| 2020 | 1 question | 1-2% |
Q2. Which part of Chemistry has more weightage in the JEE Advanced exam?
Answer: As per the paper analysis, the weightage of Chemistry in JEE Advanced Paper is as follows:
- Physical and Inorganic Chemistry: Each contributes approximately 30% of the total Chemistry marks.
- Organic Chemistry: Accounts for about 35% of the total Chemistry marks.
The JEE Main Chemistry important topics in each section are as follows:
| Part of Chemistry | Weightage in JEE | Key Topics |
| Physical Chemistry | 30% | Thermodynamics, Chemical Kinetics, Chemical Equilibrium, Electrochemistry, Solutions, Redox Reactions, Surface Chemistry |
| Inorganic Chemistry | 30% | Periodic Table and p-Block Elements, d-Block and f-Block Elements, Coordination Compounds, Qualitative Analysis, Chemical Bonding |
| Organic Chemistry | 35% | General Organic Chemistry, Stereochemistry, Hydrocarbons, Functional Groups (Alcohols, Ethers, Aldehydes, Ketones, Carboxylic Acids, etc.), Reaction Mechanisms, Polymers |
Q3. d-Block Elements Important Topics for JEE Advanced exam 2025
Answer: d-block elements : Important topic in JEE Advanced Chemistry helps in understanding the periodic table of elements.
Here are the important topics of d-block elements:
- Oxidation states and their stability;
- Standard electrode potentials;
- Interstitial compounds and alloys;
- Catalytic properties and applications;
- Preparation, structure, and reactions of oxoanions of chromium and manganese
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