CBSE Class 10 Science Question Paper Solved 2021 Set A

Access and download CBSE Class 10 Science Question Paper Solved 2021 Set A, carefully designed as per the latest 2025-26 examination guidelines issued by CBSE, NCERT, and KVS. These Class 10 Science previous year question papers include detailed solutions, helping students to assess their performance and identify and improve key areas before the final exams.

Solved Science Question Papers for Class 10

Practicing these Class 10 Science question papers is the best way to understand the actual exam pattern and marking scheme. By solving these papers under timed conditions, Class 10 students can improve their speed and accuracy. Download the full CBSE Class 10 Science Question Paper Solved 2021 Set A to begin your self-assessment today.

Science Class 10 Question Paper PDF with Solutions

SECTION A
 
1 Name the cells that surround a stoma in leaf. 
 
2 How does Spirogyra reproduce? 
 
3 The atomic numbers of three elements X,Y& Z are 7,15 and 17 respectively. Which two of these elements will show similar chemical properties? Why?
 
4 Write any two methods in which the efficiency of a solar cooker can be improved? 
 
5 How much current will an electric bulb draw from 220 V source if the resistance of the bulb is  1200 ohm? If in place of bulb, when a heater is used the current drawn is 2.2 A. Calculate the resistance of the heater.
 
6 An object of height 2 cm is placed perpendicular to the principal axis, at a distance of 10 cm from a convex mirror. The mirror has a focal length 15 cm. Find the position and size of the image.
 
7 (i) What is hypermetropia?
 
(ii) Write the cause of hypermetroipa?
 
(iii) Draw the ray diagram showing how hypermetropia is corrected?
 
8 A reddish brown powder „Z‟ is heated in the presence of air in glass tube A.
CBSE Class 10 Science Question Paper Solved 2021 Set A
 
a) Identify Z and the colour of the CuO formed in glass tube A.
 
b) What type of reaction takes place in glass tube B? Write the chemical equation.
 
9 Given below are some elements of the Modern Periodic table.
 
                   6C ,8O, 10Ne, 11 Na, 14Si
 
a) Select the element that has one electron in the outermost shell and write the electronic configuration.
 
b) Select two elements that belong to the same group. Give reason for your answer.
 
c) Select two elements that belong to the same period. Which one has bigger atomic size?
 
10 a) How is glottis different from epiglottis? State their function.
 
b) Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms?
                                      OR
State the function of
 
a) pulmonary arteryb) Red blood cellsc) Blood Platelets
 
11 a) Distinguish between acquired and inherited traits giving one example of each
 
b) What are homologous organs? Give an example
 
12 Name the device that converts electrical energy into mechanical energy. Draw the labeled diagram and write the working principle of this device.
                                      OR
(i) How is an ammeter connected in an electric circuit? Give reason.
 
(ii) List out advantages of parallel combination of appliances over series combination in domestic circuit.
 
13 a) What is universal indicator?

 

Please click on below link to download CBSE Class 10 Science Question Paper Solved 2021 Set A

2012
CBSE Class 10 Science Question Paper 2012 (1)
CBSE Class 10 Science Question Paper 2012 (10)
CBSE Class 10 Science Question Paper 2012 (11)
CBSE Class 10 Science Question Paper 2012 (12)
CBSE Class 10 Science Question Paper 2012 (13)
CBSE Class 10 Science Question Paper 2012 (14)
CBSE Class 10 Science Question Paper 2012 (15)
CBSE Class 10 Science Question Paper 2012 (16)
CBSE Class 10 Science Question Paper 2012 (2)
CBSE Class 10 Science Question Paper 2012 (3)
CBSE Class 10 Science Question Paper 2012 (4)
CBSE Class 10 Science Question Paper 2012 (5)
CBSE Class 10 Science Question Paper 2012 (6)
CBSE Class 10 Science Question Paper 2012 (7)
CBSE Class 10 Science Question Paper 2012 (8)
CBSE Class 10 Science Question Paper 2012 (9)
CBSE Class 10 Science Question Paper SA 2 2012 (1)
CBSE Class 10 Science Question Paper SA 2 2012 (10)
CBSE Class 10 Science Question Paper SA 2 2012 (11)
CBSE Class 10 Science Question Paper SA 2 2012 (12)
CBSE Class 10 Science Question Paper SA 2 2012 (13)
CBSE Class 10 Science Question Paper SA 2 2012 (14)
CBSE Class 10 Science Question Paper SA 2 2012 (15)
CBSE Class 10 Science Question Paper SA 2 2012 (16)
CBSE Class 10 Science Question Paper SA 2 2012 (17)
CBSE Class 10 Science Question Paper SA 2 2012 (2)
CBSE Class 10 Science Question Paper SA 2 2012 (3)
CBSE Class 10 Science Question Paper SA 2 2012 (4)
CBSE Class 10 Science Question Paper SA 2 2012 (5)
CBSE Class 10 Science Question Paper SA 2 2012 (6)
CBSE Class 10 Science Question Paper SA 2 2012 (7)
CBSE Class 10 Science Question Paper SA 2 2012 (8)
CBSE Class 10 Science Question Paper SA 2 2012 (9)
CBSE Class 10 Science Question Paper SA1 2012
CBSE Class 10 Science Question Paper SA2 2012 (1)

CBSE Class 10 Science Question Paper Solved 2021 Set A

To understand the types of questions asked in past examinations, it is very important for Class 10 students to solve the CBSE Class 10 Science Question Paper Solved 2021 Set A provided above. You can easily download these past papers for Class 10 Science in PDF format for the last 10 years. By practicing these actual exam questions you will gain an understanding of the difficulty level and the variety of topics covered over the years. By solving these Previous Year Papers (PYPs) you will understand both descriptive and MCQ questions in your final tests.

Importance of solving CBSE Class 10 Science Question Paper Solved 2021 Set A

Regularly practicing CBSE Class 10 Science Question Paper Solved 2021 Set A is the best way to improve your score in Class 10 Science. These papers will give you details of the marking scheme and the paper structure used by the CBSE. By regularly attempting these under actual exam conditions at home, you can slowly improve your time management skills, which will help you to complete your Science paper within the allowed duration.

Benefits of downloading CBSE Class 10 Question Papers

Having the CBSE Class 10 Science Question Paper Solved 2021 Set A in PDF format allows you to revise key concepts anywhere, even without an internet connection. These sets are a reliable tool to practice numerical problems and understand the correct approach to all types of answers. After solving the questions, you should compare your work with the solutions provided by our teachers. Along with these papers, students should always solve the Class 10 Science Sample Papers and MCQ tests on studiestoday.com for a complete revision.

Where can I download the official PDF for CBSE Class 10 Science Question Paper Solved 2021 Set A?

The CBSE Class 10 Science Question Paper Solved 2021 Set A is available for download on StudiesToday.com. It includes complete set with all sections so that Class 10 students can practice with the exact same paper that came in the CBSE exams.

Are the solutions for CBSE Class 10 Science Question Paper Solved 2021 Set A based on the official CBSE marking scheme?

Yes, the solutions for CBSE Class 10 Science Question Paper Solved 2021 Set A are prepared by subject matter experts as per official marking scheme. Class 10 students will understand the structure of answers and 'step-marks' methodology Science.

How does solving CBSE Class 10 Science Question Paper Solved 2021 Set A help in preparing for the 2026 exams?

Solving previous year papers like CBSE Class 10 Science Question Paper Solved 2021 Set A is important to understand repeat themes and question difficulty levels of Science. It helps Class 10 students to test their time management skills too.

Can I access CBSE Class 10 Science Question Paper Solved 2021 Set A in different languages?

Yes, where applicable, CBSE Class 10 Science Question Paper Solved 2021 Set A is available in both English and Hindi mediums. All students from Class 10 can access Science study material in their preferred language.

Is there a charge to download the CBSE Class 10 Science solved papers?

No, all previous year question papers on StudiesToday, including CBSE Class 10 Science Question Paper Solved 2021 Set A, are provided free of charge in mobile-friendly PDF.