CBSE Class 10 Science Additional Practice Questions 2024 with Best Competency, Marking Scheme: Download PDF

Discover the CBSE Class 10 Science Exam Pattern for the academic year 2023-24, featuring a significant emphasis on competency-based questions, which will constitute 50% of the paper. Explore the comprehensive details of the examination format, marking scheme, and question structure for the CBSE Class 10 Science Exam in 2024.

Enhance Your Science Knowledge: In this article, we present a collection of additional practice questions for CBSE Class 10 Science in 2024, complete with a corresponding marking scheme, all conveniently available in PDF format for both students and teachers.

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For CBSE Class 10 Science Additional Practice Questions in 2024, you can refer to the sample papers and their respective marking schemes, which were promptly made available by the Central Board of Secondary Education (CBSE) following the release of the 2023-24 syllabi for Classes 10 and 12. These sample papers have proven to be valuable resources for students and educators, offering insights into the exam format and the types of questions likely to appear in the 2024 board exams.

CBSE has recently published additional practice questions for both Class 10 and Class 12. These supplementary practice questions hold significance as they encourage students to tackle critical thinking-oriented problems, preparing them effectively for the challenges posed by the final board exams.

CBSE Class 10 Science Additional Practice Questions: General Instructions

  1. This question paper consists of 39 questions in 5 sections.
  2. All questions are compulsory. However, an internal choice is provided in some questions. A student is expected to attempt only one of these questions.
  3. Section A consists of 20 objective type questions carrying 1 mark each.
  4. Section B consists of 6 Very Short questions carrying 02 marks each. Answers to these questions should be in the range of 30 to 50 words.
  5. Section C consists of 7 Short Answer type questions carrying 03 marks each. Answers to these questions should be in the range of 50 to 80 words.
  6. Section D consists of 3 Long Answer type questions carrying 05 marks each. Answer to these questions should be in the range of 80 to 120 words.
  7. Section E consists of 3 source-based/case-based units of assessment of 04 marks each with sub-parts.

CBSE Class 10 Science: Additional Practice Questions 

Science (086) Class X | 2023–24

Section A

Select and write the most appropriate option out of the four options given for each of the questions 1 – 20. There is no negative mark for an incorrect response.

Q1. A single displacement reaction is represented below. 

PQ + R —-> PR + Q 

Which of the following is true about the reactants and products?

Option Type of ion of R in product Stability of PR as compared to PQ 
ACationMore stable
BCationLess stable
CAnionMore stable
DAnionLess stable

(a) A 

(b) B

(c) C 

(d) D

ALSO READ: Integration of Trigonometric Functions – Formulas, Solved Examples

Q2. Some types of chemical reactions are listed below.

– decomposition

– combination

– displacement

– double displacement

Which two of the following chemical reactions are of the SAME type?

P) AgNO3 + NaCl —> AgCl + NaNO3

Q) Mg + 2 HCl —> MgCl2 + H2

R) CH4 + 2 O2 —> CO2 + 2 H2O

S) 2 KOH + H2SO4 —> K2SO4 + H2O

(a) P and Q

(b) Q and R

(c) R and S

(d) P and S

Q3. Neetu has two test tubes containing dilute hydrochloric acid and dilute sodium hydroxide solution, but they are not labeled.

Adding which of the following solutions to the test tubes will help her visually identify the acidic and basic solution?

(a) only vinegar

(b) only baking soda

(c) only sodium chloride

(d) either vinegar or sodium chloride

Q4. Sonia has aqueous solutions of three salts, sodium acetate, sodium chloride and ammonium chloride in three test tubes. The test tubes are not labeled. On checking, she finds the pH of the solutions to be 4.6, 7.0 and 8.9. 

Which of the following correctly matches the salts with their respective pH?

 pH 4.6pH 7.0pH 8.9
Asodium acetatesodium chlorideammonium chloride
Bsodium chlorideammonium chloridesodium acetate
Cammonium chloridesodium acetatesodium chloride
Dammonium chloridesodium chloridesodium acetate

(a) A 

(b) B

(c) C 

(d) D

Q5. Galvanisation is a process of coating iron articles with a layer of zinc to prevent the iron from rusting. The iron is protected even if the zinc coating is scratched and iron is exposed.

Which of the following is true about how zinc prevents the rusting of iron?

P) A galvanised iron article does not undergo oxidation.

Q) The zinc coating prevents contact of iron with air.

R) Zinc undergoes corrosion more easily than iron.

(a) only P

(b) only Q

(c) only P and Q

(d) only Q and R

Q6. During purification of a metal by electrolysis, what happens at the negative electrode?

(a) Metal ions lose electrons to become neutral atoms.

(b) Neutral metal atoms gain electrons to become ions.

(c) Neutral metal atoms lose electrons to become ions.

(d) Metal ions gain electrons to become neutral metal atoms

To get All Questions, Download the PDF Here:

For answers to the CBSE Class 10 Science additional practice questions, please click on the provided link. It contains the solutions for the CBSE 10th Science additional practice paper.


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