Which quantity is conserved in a balanced chemical equation?
Mass
A balanced equation conserves the number of atoms of each element, and hence mass.
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| Test name | Class 11 Chemistry Easy Level Test |
|---|---|
| Class / exam | Class 11 |
| Subject / paper | Class 11 Chemistry |
| Test series | Level-wise |
| Difficulty | Easy |
| Total questions | 20 MCQs |
| Time duration | 20 min |
| Positive marking | +1 per correct answer |
| Negative marking | None |
| Language | English |
| Mode | Free online test with instant result |
523+ words · 6 topics covered
The Class 11 Chemistry Easy Level Test mock test is a focused practice paper for Class 11 students who are preparing for Class 11 Chemistry. It follows the Level-wise format and uses a easy difficulty mix, so a student can practise the same style of questions that appears in school tests, scholarship exams and competitive entrance papers. The paper contains 20 questions and runs for 20 min. Each correct answer adds 1 mark and there is no negative marking.
The syllabus coverage is built around 6 main topics: Balancing, Empirical formula, Stoichiometry, Mole concept, Molecular mass, Classification of matter. Every question is written to test understanding rather than simple recall. Definitions, formulae, units, diagrams, examples and common exceptions are combined so that the student has to read the question carefully, choose the correct concept and apply it in a slightly new situation. This is the same skill that a real exam expects, where two options may look similar and only one satisfies every condition in the question.
A good way to use this paper is to revise the chapter first, then attempt the test in one sitting without notes. The 20 min limit is deliberately short enough to build speed but long enough to reward careful reading. Students should keep a rough sheet for calculations, mark doubtful questions for review and avoid spending too long on a single item. After submission, the detailed solutions should be read even for correct answers, because the explanation often shows a faster method or points out a trap that can appear in another form later.
The topic list is also a revision checklist. If a topic feels unfamiliar, go back to the textbook, revise the formula or definition, and then attempt the same test again after a day or two. Repeated practice on Class 11 Chemistry helps students recognise the wording used by examiners, improves calculation speed and reduces careless mistakes. For formula-based questions, write the formula before substituting values; for concept-based questions, underline the limiting words such as "not", "always", "only" and "except"; for data or diagram questions, read the labels and units before choosing an option.
This page is public and does not require a login. Five sample questions with the correct answer and a detailed explanation are shown below so that students, parents and teachers can judge the quality of the paper before starting. A guest can also attempt the full timed test without creating an account. Guest attempts are intentionally kept only in the browser and are not added to a database scoreboard. Students who sign in get a saved scoreboard, topic-wise analysis, attempt history and recommendations for the next test.
The final revision plan is simple: complete the chapter, read the formulae and key definitions, attempt this Class 11 Chemistry Easy Level Test paper, review every explanation, note the weak topics and repeat a mixed or level-wise test after revision. Use the score, accuracy and time report to decide whether the next step should be more concept revision, more speed practice or a full-length paper. This cycle turns a single mock test into a complete learning session instead of a one-time score.
These are real questions from this paper. The correct answer and detailed explanation are shown openly so you can check the quality before starting the full test.
Which quantity is conserved in a balanced chemical equation?
Mass
A balanced equation conserves the number of atoms of each element, and hence mass.
The empirical formula of a compound with 40% C, 6.7% H and 53.3% O is:
CH₂O
Moles: C = 40/12 = 3.33, H = 6.7/1 = 6.7, O = 53.3/16 = 3.33. Ratio 1:2:1, so CH₂O.
The limiting reagent in a reaction is the reactant that:
Is completely consumed first
The limiting reagent is used up first and decides the amount of product formed.
The number of moles in 18 g of water is:
1
Molar mass of water is 18 g/mol. Moles = 18/18 = 1 mol.
Avogadro's number is approximately:
6.022 × 10²³
One mole contains 6.022 × 10²³ particles.
Yes. The Class 11 Chemistry Easy Level Test mock test is free to attempt. You can start it without paying and read the detailed solutions after submission.
The timed paper has 20 questions and a 20 min limit. Each correct answer gives 1 mark, and there is no negative marking.
The paper covers Balancing, Empirical formula, Stoichiometry, Mole concept, Molecular mass. The questions are drawn from the Class 11 Chemistry chapter bank and include a easy difficulty mix.
Yes. Guests can start the full timed test without an account. Guest attempts stay only in the browser and are not saved to the scoreboard. Sign in if you want your result, topic analysis and attempt history to be saved.
Yes. Five sample questions with correct answers and detailed explanations are shown on this page. After submitting the full test, signed-in students can open the complete solutions page and review every question.
Attempt the complete 20-question paper with a 20 min timer, instant score and detailed solutions. Sign in to save your scoreboard, or continue as a guest without saving data.
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