Daily Practice Problems
Class 11 Chemistry
Some Basic Concepts of Chemistry
daily practice problem

Question1.

Mass of 120 cm3HCl(g) at S.T.P is

a. 0.55g

b. 0.031g

c. 0.08g

d. 1.2g

Question2.

How many of electrons has mass equal to 1 kilogram:

a. 6.022 x 1023

b. 19.108x 1031

c. 6.0229.108x 1054

d. 19.108 ×6.023  x 108

Question3.

In dibasic acid, C = 26.7%, H = 2.2% and O = 71.1% are present. Molecular mass of an acid is 90. Calculate the empirical and molecular formula.

Question4.

Calculate the price of salt and sugar is Rs.17 per Kg and Rs. 40 per Kg then calculate the price of their 1 mole.

Question5.

How many grams of iron should be made red hot to get 2.32g of Fe3o4 by passing water vapour? The atomic mass of Fe is 56 a.m.u and O = 16 a.m.u.

Question6.

(i) Calculate the amount of KClO3 required for producing 1.23g O2 ?

(ii) What amount of KCl is produced along with this oxygen ?

Question7.
A commercial sample of Sulphuric acid Contains 36% acid by mass. Find its molarity if its density is 1.19 g cm3.

Question8.

Calculate mass of one copper atom.

Question9.

Average atomic mass of magnesium is 24.31 amu. This magnesium is composed of 79 mol% of 24Mg and remaining 21 mol % of 25Mg and 26Mg. calculate Mole% of 26Mg.

Question10.

A sample of calcium carbonate (CaCO3) has the following percentage composition :

Ca = 40%, C= 12% and O= 48%. If the law of constant proportions is true, then the mass of calcium in 4g of a sample of calcium carbonate obtained from another source will be.

a. 0.16g

b. 1.6g

c. 16g

d. 0.016g

Question11.

Explain law of constant proportions and law of conservation of mass.

Question12.

Calculate the percentage of Pb and PbO can be calculated in Pb3O4 as follows:

Question13.

What is vapour density? Write down its relation with molecular mass.

Question14.

For the same volume of gas at NTP their

a. No. of molecules will be the same.

b. No. of atoms will be the same.

c. Masses will be the same.

d. Densities will be the same.

Question15.

On combustion of 2 mol of C2H5OH, the amount of CO2 obtained will be:

a. 58

b. 176

c. 88

d. 44

Question16.

What is the Berzelius hypothesis?

Question17.

What do you understand by limiting reagents?

Question18.

The Vapour density of a mixture containing NO2 and N2O4 is 38.3 at 270 . Calculate the moles of NO2 in 100g of mixture.

Question19.

Assume that the nucleus of the Q atom is a sphere of radius 12.04 x 10-6cm.Calculate the density of matter in Q nucleus .

(If atomic mass of Q = 24g)

Question20.

AVOGRAM is ________.

**********

Problem-solving on Class 11 Chemistry Some Basic Concepts of Chemistry NCERT Chapter 1 after learning a theoretical concept is crucial for several reasons:

  1. Application of Knowledge: Problem-solving allows you to apply the theoretical concepts of the topic Class 11 Chemistry Some Basic Concepts of Chemistry 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.
  2. Understanding Deeper Concepts: When you encounter problems related to a theoretical concept that you learned in Class 11 Chemistry Some Basic Concepts of Chemistry NCERT Chapter 1, 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.
  3. 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.
  4. Retention and Recall: Actively engaging in problem-solving reinforces your memory and improves long-term retention. Applying the concepts learned in Some Basic Concepts of Chemistry Class 11 Chemistry in practical scenarios helps you remember them better than passive reading or memorization.
  5. 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 Some Basic Concepts of Chemistry Class 11 Chemistry Notes on LearnoHub.com
  6. Boosting Confidence: Successfully solving problems after learning a theoretical concept boosts your confidence in your abilities to handle Some Basic Concepts of Chemistry. This confidence motivates you to tackle more challenging tasks and improves your overall performance in the subject.
  7. 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 Some Basic Concepts of Chemistry Class 11 Chemistry Online Tests at LearnoHub.com.
  8. 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.
  9. 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.
  10. 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 Some Basic Concepts of Chemistry Class 11 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 Class 11 Chemistry Some Basic Concepts of Chemistry NCERT Chapter 1

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 Class 11 Chemistry Some Basic Concepts of Chemistry NCERT Chapter 1 useful.

Last but not least, to get the best hold on Class 11 Chemistry Some Basic Concepts of Chemistry NCERT Chapter 1, do not forget to check out:

  • Some Basic Concepts of Chemistry Class 11 Chemistry Best videos
  • Some Basic Concepts of Chemistry Class 11 Chemistry NCERT Solutions
  • Class 11 Chemistry Some Basic Concepts of Chemistry Revision notes
  • Some Basic Concepts of Chemistry Class 11 Chemistry DPPs, Download PDF of solutions
  • Class 11 Chemistry Some Basic Concepts of Chemistry Online Tests
  • Class 11 Chemistry Sample papers