Daily Practice Problems
NEET Chemistry
The d- and f-Block Elements
NEET Chemistry
The d- and f-Block Elements
Question 1:
Electronic configuration of a transition element X in +3 oxidation state is [Ar]3d5. What is its atomic number?
(a) 25
(c) 27
(d) 24 [Level: Easy]
Question 2:
The electronic configuration of Cu(II) is 3d9 whereas that of Cu(I) is 3d10. Which of the following is correct.
(b) Cu(II) is less stable
(c) Cu(I) and Cu(II) are equally stable
(d) Stability of Cu(I) and Cu(II) depends on nature of copper salts [Level: Moderate]
Question 3:
Metallic radii of some transition elements are given below. Which of these elements will have highest density?
Element Fe Co Ni Cu
Metallic radii/pm 126 125 125 128
(a) Fe
(b) Ni
(c) Co
(d) Cu [Level: Moderate]
Question 4:
Generally, transition elements form coloured salts due to the presence of unpaired electrons. Which of the following compounds will be coloured in solid state?
(a) Ag2SO4
(c) ZnF2
(d) Cu2Cl2 [Level: Moderate]
Question 5:
On addition of small amount of KMnO4 to concentrated H2SO4 , a green oily compound is obtained which is highly explosive in nature. Identify the compound from the following.
(b) MnO2
(c) MnSO4
(d) Mn2O3 [Level: Difficult]
Question 6:
The magnetic nature of elements depends on the presence of unpaired electrons. Identify the configuration of transition element, which shows highest magnetic moment.
(a) 3d7
(c) 3d8
(d) 3d2 [Level: Moderate]
Question 7:
Which of the following oxidation state is common for all lanthanoids?
(a) + 2
(c) + 4
(d) + 5 [Level: Easy]
Question 8:
Which of the following reactions are disproportionation reactions?
(b) (i), (ii) and (iii)
(c) (ii), (iii) and (iv)
(d) (i) and (iv) [Level: Moderate]
Question 9:
When KMnO4 solution is added to oxalic acid solution, the decolourisation is slow in the beginning but becomes instantaneous after some time because
(a) CO2 is formed as the product
(b) reaction is exothermic
(c) MnO4- catalyses the reaction
(d) Mn2+ acts as autocatalyst [Level: Difficult]
Question 10:
There are 14 elements in actinoid series. Which of the following elements does not belong to this series?
(a) U
(b) Np
(c) Tm
(d) Fm [Level: Easy]
Question 11:
KMnO4 acts as an oxidising agent in acidic medium. The number of moles of KMnO4 that will be needed to react with one mole of sulphide ions in acidic solution is
(b) 3/5
(c) 4/5
(d) 1/5 [Level: Difficult]
Question 12:
Which of the following oxides are amphoteric?
Mn2O7, CrO3 , Cr2O3, CrO, V2O5, V2O4
(b) Mn2O7, CrO3
(c) CrO, V2O5
(d) V2O5, V2O4 [Level: Moderate]
Question 13:
Gadolinium belongs to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium?
(b) [Xe]4f6 5d2 6s2
(c) [Xe]4f8 6d2
(d) [Xe]4f9 5s1 [Level: Easy]
Question 14:
Interstitial compounds are formed when small atoms are trapped inside the crystal lattice of metals. Which of the following is not the characteristic property of interstitial compounds?
(a) They have high melting points in comparison to pure metals
(b) They are very hard
(c) They retain metallic conductivity
(d) They are chemically very reactive [Level: Moderate]
Question 15:
The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of Cr3+ ion is
(a) 2.87 BM
(c) 3.47 BM
(d) 3.57 BM [Level: Moderate]
Question 16:
KMnO4 acts as an oxidising agent in alkaline medium. When alkaline KMnO4 is treated with KI, iodide ion is oxidised to ..................
(a) I2
(b) IO–
(d) IO4- [Level: Moderate]
Question 17:
Which of the following statements is not correct?
(a) Copper liberates hydrogen from acids
(b) In its higher oxidation states, manganese forms stable compounds with oxygen and fluorine
(c) Mn3+ and Co3+ are oxidising agents in aqueous solution
(d) Ti2+ and Cr2+ are reducing agents in aqueous solution [Level: Moderate]
Question 18:
In acidic medium, H2O2 changes Cr2O72– to CrO5 which has two (–O–O) bonds. Oxidation state of Cr in CrO5 is:-
(a) + 5
(b) + 3
(d) – 10 [Level: Difficult]
Question 19:
The electronic configurations of Eu(Atomic No. 63), Gd(Atomic No. 64) and Tb (Atomic No. 65) are
(a) [Xe] 4f7 6s2, [Xe] 4f8 6s2 and [Xe] 4f8 5d1 6s2
(b) [Xe] 4f7 5d1 6s2, [Xe] 4f7 5d1 6s2 and [Xe] 4f9 6s2
(c) [Xe] 4f6 5d1 6s2, [Xe] 4f7 5d1 6s2 and [Xe] 4f8 5d1 6s2
(d) [Xe] 4f7 6s2, [Xe] 4f7 5d1 6s2 and [Xe] 4f9 6s2 [Level: Easy]
Question 20:
Name the gas that can readily decolourise acidified KMnO4 solution :
(b) NO2
(c) P2O5
(d) CO2 [Level: Difficult]
Problem-solving on NEET Chemistry The d- and f-Block Elements NCERT Chapter 8 after learning a theoretical concept is crucial for several reasons:
- Application of Knowledge: Problem-solving allows you to apply the theoretical concepts of the topic NEET Chemistry The d- and f-Block Elements you have learned to real-life situations. It helps you bridge the gap between abstract knowledge and practical scenarios, making the learning more relevant and meaningful.
- Understanding Deeper Concepts: When you encounter problems related to a theoretical concept that you learned in NEET Chemistry The d- and f-Block Elements NCERT Chapter 8, you are forced to delve deeper into its intricacies. This deeper understanding enhances your comprehension of the subject and strengthens your grasp of the underlying principles.
- Critical Thinking: Problem-solving encourages critical thinking and analytical skills. It requires you to analyze the problem, identify relevant information, and devise a logical solution. This process sharpens your mind and improves your ability to approach complex challenges effectively.
- Retention and Recall: Actively engaging in problem-solving reinforces your memory and improves long-term retention. Applying the concepts learned in The d- and f-Block Elements NEET Chemistry in practical scenarios helps you remember them better than passive reading or memorization.
- Identifying Knowledge Gaps: When you attempt to solve problems, you may encounter areas where your understanding is lacking. These knowledge gaps become evident during problem-solving, and you can then focus on filling those gaps through further study and practice. You can refer The d- and f-Block Elements NEET Chemistry Notes on LearnoHub.com
- Boosting Confidence: Successfully solving problems after learning a theoretical concept boosts your confidence in your abilities to handle The d- and f-Block Elements. This confidence motivates you to tackle more challenging tasks and improves your overall performance in the subject.
- Preparation for Exams and Challenges: Many exams, especially in science, mathematics, and engineering, involve problem-solving tasks. Regular practice in problem-solving prepares you to face these exams with confidence and perform well. It is also advised to take tests on The d- and f-Block Elements NEET Chemistry Online Tests at LearnoHub.com.
- Enhancing Creativity: Problem-solving often requires thinking outside the box and exploring various approaches. This fosters creativity and innovation, enabling you to come up with novel solutions to different problems.
- Life Skills Development: Problem-solving is a valuable life skill that extends beyond academics. It equips you with the ability to tackle various challenges you may encounter in personal and professional life.
- Improving Decision Making: Problem-solving involves making decisions based on available information and logical reasoning. Practicing problem-solving enhances your decision-making skills, making you more effective in making informed choices.
In summary, problem-solving after learning a theoretical concept on CBSE The d- and f-Block Elements NEET Chemistry is an essential part of the learning process. It enhances your understanding, critical thinking abilities, and retention of knowledge. Moreover, it equips you with valuable skills that are applicable in academic, personal, and professional contexts.
You must have heard of the phrase “Practice makes a man perfect”. Well, not just a man, practice indeed enhances perfection of every individual.
Practicing questions plays a pivotal role in achieving excellence in exams. Just as the adage goes, "Practice makes perfect," dedicating time to solve a diverse range of exam-related questions yields manifold benefits. Firstly, practicing questions allows students to familiarize themselves with the exam format and types of problems they might encounter. This familiarity instills confidence, reducing anxiety and improving performance on the actual exam day. Secondly, continuous practice sharpens problem-solving skills and enhances critical thinking, enabling students to approach complex problems with clarity and efficiency. Thirdly, it aids in identifying weak areas, allowing students to focus their efforts on improving specific topics. Moreover, practice aids in memory retention, as active engagement with the material reinforces learning. Regular practice also hones time management skills, ensuring that students can allocate appropriate time to each question during the exam. Overall, practicing questions not only boosts exam performance but also instills a deeper understanding of the subject matter, fostering a holistic and effective learning experience.
All About Daily Practice Problems on NEET Chemistry The d- and f-Block Elements NCERT Chapter 8
Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on NEET Chemistry The d- and f-Block Elements NCERT Chapter 8 useful.
Last but not least, to get the best hold on NEET Chemistry The d- and f-Block Elements NCERT Chapter 8, do not forget to check out:
- The d- and f-Block Elements NEET Chemistry Best videos
- The d- and f-Block Elements NEET Chemistry NCERT Solutions
- NEET Chemistry The d- and f-Block Elements Revision notes
- The d- and f-Block Elements NEET Chemistry DPPs, Download PDF of solutions
- NEET Chemistry The d- and f-Block Elements Online Tests
- NEET Chemistry Sample papers