Madhyamik 2025Physical Science Question Paper Pdf

A’ category

1. Multiple choice questions. Four answer options are given below each question. Write the correct one: 1 x 15

1.1 Which of the following gases does not contribute to ozone depletion in the ozone layer? (a) NO (b) NO2 (c) CFC (d) CO2

1.2 What is the value of PV at STP for an ideal gas of 11.2 liters? (a) 2 RT (b) RT (c) 0.5 RT (d) 11.2 RT

1.3 According to the chemical equation below, CH4+2O2→CO2+2H2O, what volume of O2 is required at STP to burn 10 moles of CH4? (a) 448 L (b) 224 L (c) 44.8 L (d) 22.4 L

1.4 Which of the following materials has the highest thermal conductivity? (a) Silver (b) Diamond (c) Copper (d) Aluminum

1.5 If a red and a violet light ray are incident from air at the same angle on the surface of a prism and produce angles of refraction r and v respectively, which of the following is correct? (a) r=v (b) r=1v (c) r>v (d) r<v

1.6 A point light source is placed at the centre of curvature of a concave mirror. The angle of refraction between the rays incident on the mirror and those reflected from the mirror from this source is (a) 0° (b) 180° (c) 90° (d) 360°

1.7 Coulomb’s law of electric charge is applicable when two charges are (a) one point, one spherical (b) both spherical (c) one point, the other extended (d) both point

1.8 The properties of fuse wire are (a) high resistance, high melting point (b) low resistance, low melting point (c) low heat, high melting point (d) high resistance, low melting point

1.9 An α-particle contains (a) one proton, one neutron (b) one proton (c) two protons, two neutrons (d) one electron

1.10 Which of the following is not a periodic law of elements? (a) Density (b) Melting point (c) Boiling point (d) Radioactivity

1.11 Which of the following compounds does not have any molecule? (a) Hydrogen chloride (b) Calcium oxide (c) Methane (d) Ammonia

1.12 Which of the following statements is correct regarding the electrolysis of CuSO4 solution using Cu electrode? (a) The mass of cathode decreases (b) The mass of anode increases (c) The concentration of CuSO4 in the solution decreases (d) The concentration of CuSO4 in the solution remains unchanged

1.13 What colour is produced when H2S gas is passed through an alkaline aqueous solution of sodium nitroprusside? (a) Purple (b) Orange (c) Dark blue (d) Green

1.14 The formula of iron ore red hematite is (a) FeO (b) Fe2O3 (c) Fe2O4 (d) FeCO3

1.15 Which of the following compounds reacts with aqueous NaHCO3 to produce CO2? (a) CH3CH2OH (b) CH3CHO (c) CH3COCH3 (d) CH3COOH

 ‘B’ category

2. Answer the following questions (note the optional questions):

2.1 Which fuel gas is extracted from coal beds?

Or

Name any gas present in the air, the increase in which causes global warming.

2.2 Name an energy source that can be used for sustainable growth and development.

2.3 Write the following statement as true or false: The velocities of molecules in a gas kept in a closed container at a certain temperature and pressure are equal.

2.4 What is the nature of the V vs. T diagram according to Charles’s law?

2.5 Write the following statement as true or false: Among copper, invar and iron, the coefficient of linear expansion of iron is the lowest.

Or

What is the unit of coefficient of volumetric expansion?

2.6 What is meant by the pole of a spherical mirror?

2.7 Write one use of X-rays.

2.8 Name a device where electrical energy is converted into mechanical energy.

2.9 What are the two other wires in a household circuit other than the live wire?

2.10 What type of nuclear reaction is used to produce energy in a nuclear reactor?

Or

Give an example of a naturally occurring radioactive element.

2.11 Match the left column with the right column: 1 x 4

Left Column Right Column 2.11.1 A post-uranium element (a) Klypton 2.11.2 A noble element (b) Neptunium 2.11.3 It is prepared by carbon reduction of the oxide of the metal (c) Copper 2.11.4 A metal alloy in which the percentage of one metal is greater than the percentage of the other metal (d) Zinc

2.12 Which of chloroform and sodium chloride does not dissolve in water?

2.13 Name a metal that is extracted by electrolysis.

Or

What is the anode in the electroplating of silver on a brass spoon?

2.14 What energy causes chemical reactions during electrolysis?

2.15 With the help of suitable litmus paper, show that aqueous solution of ammonia is alkaline in nature.

Or

Fill in the blanks: NaOH+H2S→ —— +H2O

2.16 Write one use of urea.

2.17 Write the structural formula of propanone.

Or

Bhola was the first to prepare an organic compound from an inorganic compound in the laboratory. What is the organic compound?

2.18 Give an example of a biodegradable natural polymer.

‘C’ category

3. Answer the following questions (note the optional questions): 2×9

3.1 In which of the layers of the atmosphere is the pressure the highest? Write the reason. 20

3.2 Determine the ratio of the volumes occupied by 32g of O2 and 44g of CO2 gas at a temperature of 27°C and a pressure of 700 mmHg.

Or

A certain mass of gas occupies a volume of 520 cm3 at -13°C. When the gas is heated while keeping the pressure unchanged, the volume of the gas increases to 700 cm3. What is the final temperature of the gas in degrees Celsius? 2

3.3 Mention two properties of the image formed by a simple camera.

Or

Where will the image formed by a concave mirror of an infinitely large object be formed in front of the mirror? Mention one property of the image. 1+1

3.4 State one similarity and one difference between electromotive force and potential difference. 1+1

3.5 Give an example of an ionic compound to show that its ions do not obey the octet rule. 2

Or

Explain why the melting point of sodium chloride is much higher than the melting point of glucose. 2

3.6 Show that F forms ionic bonds with Na, but forms covalent bonds with H. (The atomic numbers of H, F and Na are 1, 9 and 11 respectively) 2

3.7 Write the balanced chemical equation of what happens when nitrogen gas is passed over calcium carbide heated to 100°C. 2

3.8 Write the balanced chemical equation for the production of metallic iron from ferric oxide by the thermite method. Mention one application of this method.

Or

Write the balanced chemical equation for the chemical reaction that occurs when a piece of metallic iron is added to an aqueous solution of CuSO4. What can be learned from this reaction about the relative positions of Cu and Fe in the activity class of metals? 2

3.9 Select members of a homogeneous class from the following compounds and arrange them in ascending order of molecular weight: CH3COOH, CH3CH2OH, CH3OCH3, CH3OH, C2H4, C2H6, CH3CH2CH2OH, C3H4 2

Or

Write with an example what is meant by functional group.

‘D’ category

 4. Answer the following questions (note the optional questions):

4.1 State Avogadro’s formula. At a given temperature and pressure, the molar volume (v/N) of real gases is approximately equal and its limiting value at STP is 22.4 L mol-1. How can Avogadro’s formula be derived from this experimental data? 2+1

4.2 A and B react with each other to produce C according to the chemical equation below: 2A+B→2C A, B and C are the symbols of three gaseous substances respectively. The vapour density of A and B are 32 and 16 respectively. Determine the vapour density of C. 3

Or

According to the chemical equation below 2ZnS+3O2→2ZnO+2SO2, how many (i) grams of ZnO and (ii) moles of SO2 will be produced from 100 moles of ZnS? (Zn = 65.5, S = 32, O = 16)

4.3 Give an example of volume expansion of a liquid on application of heat.

The area of ​​a solid is A1 sqm at temperature T1 K and A2 sqm at temperature T2K. Write the mathematical form of the coefficient of expansion of the solid with units. 1+2

Or

Write down the three factors on which the transfer of heat through solids depends. 3

4.4 What is the dispersion of light? What will be the dispersion inside the glass after refraction of white light incident on a glass plate at an angle of 45°? 2+1

4.5 The principal cross-section of a prism is an equilateral triangle. If a ray incident at an angle of 30° on one of the prism’s reflecting surfaces emerges at an angle of 45° from the other reflecting surface, what is the angle of refraction? 3

Or

If the wavelength of light in air is 6000 Å, what will be the speed and wavelength of that light in a medium with refractive index of 1.5? 1+2

4.6 Two metal conductors A and B of equal length have resistivities of 1.6 x 10-8 Ωm and 3.2 x 10-8 Ωm respectively. The two conductors are connected separately to the same potential difference. What is the ratio of their cross-sections so that the current through each of them will be the same?

Or

Two 10 ohm resistors are connected in series and the resistor is connected in parallel with a 20 ohm resistor. Determine the equivalent resistance of the final resistor. 3

4.7 What is meant by power? A bulb is rated 220V — 100 W — what does this mean? 1+2

4.8 Radioactive rays are emitted from which part of the atom? Which of the radioactive rays has the highest penetrating power and ionizing power? 1+2

4.9 State the difference between the hydrogen atom and one atom of group 1 elements and two atoms of group 17 elements. 1+2

Or

Arrange as instructed:

(a) Arrange Na(11), K(19), Li(3), Rb(37) belonging to group 1 of the long periodic table in the descending order of atomic radius.

(b) In the long periodic table, S(16), O(8), Te (52), Se (34) belonging to group 16 are arranged in order of increasing electronegativity.

(c) In the descending order of reducing power, Ca(20), Be(4), Sr(38), Mg(12) belong to group 2 of the long periodic table.

(The atomic numbers of the elements are given in the first bracket next to the symbols of the elements) 1+1+1

4.10 On what basis are electrolysis classified as strong and weak electrolysis? Give an example of strong electrolysis. 2+1

4.11 Describe how nitric oxide is produced by oxidizing ammonia with oxygen from the air, mentioning the name of the catalyst and the conditions. Also write the balanced chemical equation of the reaction. 2 + 1

4.12 Two different organic compounds A and B have the same molecular formula, C2H6O. A reacts with metallic sodium to produce hydrogen gas but B does not react with metallic sodium. Write the structural formula of compounds A and B. Write the balanced chemical equation for the reaction of metallic sodium with A. 2+1

Or state the conditions for the reaction of hydrogen addition to ethylene. Write the balanced chemical equation for the reaction. State one use of CNG. 2+1

‘E’ category

(For external candidates only)

5. Answer the following questions (any four) 1×4

5.1 In which layer of the atmosphere are convection currents seen?

5.2 When two resistors are combined in which coefficient, the equivalent resistance is less than both resistors?

5.3 A certain mass of a gas occupies a volume of 150 cm3 at a certain temperature and 1 atmosphere of pressure. What volume will the gas occupy at that temperature and 1.5 atmosphere of pressure?

5.4 Which radioactive rays are composed of negatively charged particles?

5.5 Mention one use of ethylene.

6. Answer the following questions (any three): 2×3

6.1 Write the difference between semiconductor and superconductor based on the relationship between resistivity and temperature. 6.2 What is a diverging lens?

6.3 Write the balanced chemical equation of what happens when ammonium chloride is heated with dry lime.

6.4 Write what is meant by saturated hydrocarbon with an example.

I currently do not have direct access to the Madhyamik 2025 Physical Science Question Paper PDF. However, I can guide you on where and how you can find it, and also provide tips for preparing for the Madhyamik Physical Science exam.

Where to Find the Madhyamik 2025 Physical Science Question Paper:

1. Official WBBSE Website:

   • The West Bengal Board of Secondary Education (WBBSE), the official authority for Madhyamik exams, usually provides model papers and previous year question papers on their official website. Visit:

   • Educational Websites:

   • Websites like Aglasem, BYJU’s, Toppr, Shiksha, and Embibe offer Madhyamik Physical Science question papers and model papers. These can be downloaded for free.

2. Social Media and Study Groups:

   • Join online study groups on WhatsApp, Facebook, or Reddit where students often share question papers, study materials, and exam tips related to Physical Science.

3. Educational Publishers:

   • Educational publishers like Selina, Oswal Publishers, and Cengage provide model question papers and practice papers for Physical Science. You can check their websites for PDF downloads.

4. Online Learning Platforms:

   • Websites and apps like Toppr, Embibe, and Vedantu provide practice papers and solutions for Physical Science. They also have resources tailored to the Madhyamik syllabus.

Preparation Tips for Madhyamik 2025 Physical Science Exam:

1. Understand the Syllabus:

   • The Madhyamik Physical Science syllabus generally includes:

     • Physics: Topics like force, motion, work and energy, light, sound, electricity, magnetism, and heat.

     • Chemistry: Topics such as matter, chemical reactions, acids-bases, metals and non-metals, and environmental chemistry.

2. Focus on Important Topics:

   • In Physics, focus on understanding concepts like Newton’s laws of motion, laws of reflection and refraction, Ohm’s law, electric circuits, and magnetism.

   • In Chemistry, focus on topics such as chemical reactions, atomic structure, properties of acids and bases, periodic table, and chemical bonding.

3. Practice Numerical Problems:

   • Physical Science often includes numerical problems, especially in Physics. Practice solving problems related to:

     • Speed, velocity, and acceleration in motion.

     • Ohm’s law and electrical circuits.

     • Energy calculations.

     • Heat and thermodynamics.

4. Revise the Formulas:

   • For Physics, memorize important formulas like:

     • Force (F = ma)

     • Work (W = F × d)

     • Energy (E = mc²)

     • Ohm’s Law (V = IR)

     • Newton’s laws of motion.

   • For Chemistry, make sure to revise concepts related to:

     • Chemical equations.

     • Molar calculations.

     • Balancing of chemical reactions.

5. Solve Previous Years’ Question Papers:

   • Solve previous years’ question papers to understand the exam pattern and the types of questions that are frequently asked.

   • Focus on solving problems that involve calculation-based questions and concept-based theory questions.

6. Important Topics to Focus On:

   • Physics: Laws of Motion, Work and Energy, Sound, Light, Electric Current, Magnetism, and Heat.

   • Chemistry: Chemical Reactions, Acid-Base Reactions, Types of Matter, Elements and Compounds, Properties of Metals and Non-Metals, and Environmental Chemistry.

7. Time Management:

   • In the exam, time management is key. Try to allocate a fixed time to each section during practice tests to improve your efficiency.

Sample Questions for Practice:

1. Physics:

   • Q1: A car accelerates from rest at a rate of 2 m/s². Calculate its velocity after 5 seconds.

   • Q2: A 10 ohm resistor is connected to a 20V battery. What is the current flowing through the circuit? (Use Ohm’s Law)

   • Q3: Explain the laws of reflection with the help of a diagram.

2. Chemistry:

   • Q1: Write a balanced chemical equation for the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH).

   • Q2: What is the atomic structure of oxygen? Explain with a diagram.

   • Q3: Explain the difference between acids and bases with examples.

3. Objective Questions:

   • Q1: The formula of methane is:

     • a) CH4

     • b) C2H4

     • c) CO2

     • d) C2H6

   • Q2: The unit of force in the SI system is:

     • a) Newton

     • b) Joule

     • c) Meter

     • d) Kilogram

Additional Resources for Preparation:

1. Reference Books:

   • “Physical Science for Class 10” by Cengage and “Oswal Publishers Physical Science” are good books for practice and theory.

   • NCERT Science Books are also very helpful for understanding core concepts.

2. YouTube Channels:

   • Channels like Unacademy, Vedantu, and BYJU’s offer free lessons on Physical Science, including detailed explanations on Physics and Chemistry topics.

3. Mobile Apps:

   • Apps like Toppr, BYJU’s, and Vedantu provide practice questions, mock tests, and detailed solutions specifically for Madhyamik Physical Science.

4. Online Practice Websites:

   • Websites like Khan Academy, Embibe, and BYJU’s offer practice questions and interactive learning modules on Physical Science.

By following these preparation strategies and practicing regularly, you will be well-prepared for the Madhyamik 2025 Physical Science exam. Let me know if you need help with any specific topic or if you have other queries!

Madhyamik 2025Physical Science Question Paper Pdf