11th Chemistry Some Basic Concepts of Chemistry MCQ Quiz

Test your knowledge with our free MCQ quiz on 11th Chemistry: Some Basic Concepts of Chemistry MCQ Quiz. Perfect for students aiming to ace their exams with chapter-wise practice questions.

Chapter Some Basic Concepts of Chemistry MCQ

Time: 10 Minutes for 10 Question.

11th Chemistry: Some Basic Concepts of Chemistry

1 / 10

1. What is the number of helium atoms in 52 u of helium?

3 atoms

13 atoms

5 atoms

23 atoms

Report Question Answer

2 / 10

2. Calculate the amount of water (g) produced by the combustion of 16 g of methane.

66 g H₂O

26 g H₂O

36 g H₂O

16 g H₂O

Report Question Answer

3 / 10

3. If the speed of light is 3.0 × 10⁸ m s^–1, calculate the distance covered by light in 2.00 ns.

6.00 × 10^–2 m =0.600 m

5.00 × 10^–1 m =0.600 m

6.00 × 10^–1 m =0.50 m

6.00 × 10^–1 m =0.600 m

Report Question Answer

4 / 10

4. A jug contains 2 L of milk. Calculate the volume of the milk in m³.

2x5^-3m³

2x10^-3m³

2x10^-3m²

2x10^-2m³

Report Question Answer

5 / 10

5. A solution is prepared by adding 2 g of a substance A to 18 g of water. Calculate the mass per cent of the solute.

100%

20%

10%

Report Question Answer

6 / 10

6. Calculate the molecular mass of glucose (C₆H₁₂O₆) molecule.

5 u

280.162 u

18.2 u

180.162 u

Report Question Answer

7 / 10

7. Calculate the molarity of NaOH in the solution prepared by dissolving its 4 g in enough water to form 250 mL of the solution.

0.4 M

0.6 M

6 M

8 M

Report Question Answer

8 / 10

8. A sample of drinking water was found to be contaminated with chloroform, CHCl₃, at a level of 15 ppm (by mass). What is this concentration in percent by mass?

0.25%

0.15%

0.015%

0.025%

Report Question Answer

9 / 10

9. The density of 3 M solution of NaCl is 1.25 g mL^–1. Calculate the molality of the solution.

2.09 m

2.69 m

2.79 m

1.79 m

Report Question Answer

10 / 10

10. How many seconds are there in 2 days?

172800 s

7280 s

62800 s

72800 s

Report Question Answer

Insert Full Name and email for result.

Full NameEmail

Your score is

View Chapter wise MCQ Quiz of 11th Chemistry

Summary of Some Basic Concepts of Chemistry

Chemistry: Understanding the Building Blocks of Matter
Chemistry, a relatively young discipline, has its roots in ancient India, where people understood and applied various scientific phenomena in their daily lives. Today, chemistry plays a vital role in every aspect of our lives, as it studies the properties, structure, and changes of substances. Matter, the fundamental component of substances, can exist in three states – solid, liquid, or gas – and can be classified into elements, compounds, or mixtures.

Measurements and Units
To understand chemistry, measurements are crucial, and a uniform system of measurement, SI units (International System of Units), is widely used. Measurements involve uncertainty, and hence, scientific notation and significant figures are used to express and handle data. Dimensional analysis enables the conversion of measured quantities between different systems of units.

Laws of Chemical Combination
The combination of atoms is governed by fundamental laws, including the Law of Conservation of Mass, Law of Definite Proportions, and Avogadro’s Law, which led to Dalton’s atomic theory. This theory states that atoms are the building blocks of matter, and their masses are expressed relative to the 12C isotope of carbon.

Molecular Mass and Chemical Reactions
The molecular mass of a molecule is the sum of the atomic masses of its atoms. Chemical reactions represent chemical changes, and a balanced chemical equation provides valuable information on the molar ratios and particles involved. Stoichiometry is the quantitative study of reactants and products, enabling calculations of the amount of reactants required or products formed.

Conclusion
In conclusion, chemistry is a vital discipline that helps us understand the properties, structure, and changes of substances. Its principles and laws, including measurements and units, chemical combination, and chemical reactions, form the foundation of our understanding of the world around us.

Study Source:

https://ncert.nic.in/

QuizRanker YouTube

Swati Kumari

I am an experienced chemistry teacher and content developer specializing in chemistry and science subjects at QuizRanker. With a Master’s degree in Chemistry from Delhi University, I bring a deep understanding of the subject and a passion for teaching. In addition to creating engaging educational content, I offer personalized one-on-one live tutoring sessions for students. I am available to support learners in 11th and 12th grade chemistry, as well as science subjects for students up to 10th grade.

Chapter Some Basic Concepts of Chemistry MCQ

Report a question

Summary of Some Basic Concepts of Chemistry

Swati Kumari