10th Science one mark questions with answers PDF

This guide is designed to help students with 10th Science one mark questions and answers. It covers various important topics that are commonly asked in exams, providing concise answers for quick revision. The questions are simple, making it easier for students to understand key concepts.

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Physics Questions and Answers

Question: What is the unit of force?
Answer: The unit of force is Newton (N).

Question: What is the SI unit of work?
Answer: The SI unit of work is Joule (J).

Question: What is the acceleration due to gravity on Earth?
Answer: The acceleration due to gravity on Earth is 9.8 m/s².

Question: What is the formula for gravitational potential energy?
Answer: The formula for gravitational potential energy is PE = mgh.

Question: What is Ohm’s law?
Answer: Ohm’s law states that V = IR, where V is voltage, I is current, and R is resistance.

Question: What is the unit of power?
Answer: The unit of power is Watt (W).

Question: What is the principle of conservation of energy?
Answer: The principle of conservation of energy states that energy cannot be created or destroyed, only converted from one form to another.

Question: What is the law of reflection?
Answer: The law of reflection states that the angle of incidence is equal to the angle of reflection.

Question: What is the formula for force?
Answer: The formula for force is F = ma, where F is force, m is mass, and a is acceleration.

Question: What is an example of a non-contact force?
Answer: Gravity is an example of a non-contact force.

Question: What is the function of a fuse in an electric circuit?
Answer: A fuse protects the circuit from excessive current by breaking the circuit if the current exceeds a safe level.

Question: What is the role of a battery in an electric circuit?
Answer: A battery provides the necessary voltage to drive current through an electric circuit.

Question: What is the unit of electric current?
Answer: The unit of electric current is Ampere (A).

Question: What is the formula for calculating speed?
Answer: The formula for speed is Speed = Distance/Time.

Question: What is the effect of an increase in temperature on the resistance of a conductor?
Answer: An increase in temperature generally increases the resistance of a conductor.

Question: What is refraction?
Answer: Refraction is the bending of light when it passes from one medium to another.

Question: What is the SI unit of electric charge?
Answer: The SI unit of electric charge is Coulomb (C).

Question: What is the magnetic field around a current-carrying conductor?
Answer: A current-carrying conductor produces a circular magnetic field around it.

Question: What is a solenoid?
Answer: A solenoid is a coil of wire that produces a magnetic field when an electric current flows through it.

Question: What is the SI unit of frequency?
Answer: The SI unit of frequency is Hertz (Hz).

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Chemistry Questions and Answers

Question: What is the chemical formula of water?
Answer: The chemical formula of water is H₂O.

Question: What is an acid?
Answer: An acid is a substance that releases hydrogen ions (H⁺) in solution.

Question: What is the pH value of neutral water?
Answer: The pH value of neutral water is 7.

Question: What is the process of rusting?
Answer: Rusting is the process in which iron reacts with oxygen and moisture to form iron oxide.

Question: What is a chemical reaction?
Answer: A chemical reaction is a process where reactants are transformed into products with different properties.

Question: What is the symbol for sodium?
Answer: The symbol for sodium is Na.

Question: What is the formula for methane?
Answer: The formula for methane is CH₄.

Question: What is the difference between a mixture and a compound?
Answer: A mixture is a combination of two or more substances that retain their individual properties, while a compound is a substance formed by chemically bonding elements.

Question: What is the atomic number of oxygen?
Answer: The atomic number of oxygen is 8.

Question: What is the process of filtration?
Answer: Filtration is a process used to separate solid particles from a liquid or gas by using a filter.

Question: What is the chemical formula for sulfuric acid?
Answer: The chemical formula for sulfuric acid is H₂SO₄.

Question: What is the principle of conservation of mass?
Answer: The principle of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.

Question: What is the chemical formula of ammonia?
Answer: The chemical formula of ammonia is NH₃.

Question: What is the property of an acid?
Answer: Acids have a sour taste, turn blue litmus paper red, and release hydrogen ions in water.

Question: What is the property of a base?
Answer: Bases have a bitter taste, slippery feel, and turn red litmus paper blue.

Question: What is distillation?
Answer: Distillation is a process used to separate liquids based on differences in boiling points.

Question: What is the atomic number of hydrogen?
Answer: The atomic number of hydrogen is 1.

Question: What is the formula for hydrochloric acid?
Answer: The formula for hydrochloric acid is HCl.

Question: What is the symbol for potassium?
Answer: The symbol for potassium is K.

Question: What is the process of neutralization?
Answer: Neutralization is a chemical reaction between an acid and a base to form water and a salt.

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Biology Questions and Answers

Question: What is the basic unit of life?
Answer: The basic unit of life is the cell.

Question: What is photosynthesis?
Answer: Photosynthesis is the process by which plants convert carbon dioxide and water into glucose and oxygen using sunlight.

Question: What is the main function of the heart?
Answer: The main function of the heart is to pump blood throughout the body.

Question: What are chromosomes made of?
Answer: Chromosomes are made of DNA.

Question: What is the human genome?
Answer: The human genome is the complete set of genes or genetic material present in human cells.

Question: What is the function of the kidney?
Answer: The function of the kidney is to filter waste from the blood and produce urine.

Question: What is respiration?
Answer: Respiration is the process by which cells release energy from glucose and oxygen.

Question: What is the role of the nervous system?
Answer: The nervous system controls and coordinates the body’s activities by transmitting signals between different parts of the body.

Question: What is immunity?
Answer: Immunity is the body’s ability to resist or fight infections and diseases.

Question: What is the function of red blood cells?
Answer: The function of red blood cells is to transport oxygen from the lungs to the rest of the body.

Question: What is the function of white blood cells?
Answer: The function of white blood cells is to protect the body against infection.

Question: What is the process of digestion?
Answer: Digestion is the breakdown of food into smaller molecules that can be absorbed by the body.

Question: What is the largest organ in the human body?
Answer: The largest organ in the human body is the skin.

Question: What are the components of blood?
Answer: The components of blood are plasma, red blood cells, white blood cells, and platelets.

Question: What is the function of the digestive system?
Answer: The function of the digestive system is to break down food and absorb nutrients.

Question: What is the difference between an artery and a vein?
Answer: Arteries carry oxygenated blood away from the heart, while veins carry deoxygenated blood to the heart.

Question: What is the role of the mitochondria?
Answer: The mitochondria are responsible for producing energy in the form of ATP for the cell.

Question: What is the main organ of the circulatory system?
Answer: The heart is the main organ of the circulatory system.

Question: What is an ecosystem?
Answer: An ecosystem is a community of living organisms interacting with their environment.

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These one-mark questions and answers are an excellent resource for quick revision. By practicing these, students can gain confidence and be well-prepared for their 10th Science exams. The questions cover a variety of important concepts across Physics, Chemistry, and Biology.