Bihar Board Class 10 Science Objective Questions

Bihar Board Class 10 science objective questions are crucial for students preparing for their exams. These questions help students revise key concepts in an efficient and quick manner. The objective section often covers multiple topics and requires clear understanding. Below are the most important questions and answers to help students practice effectively.

Bihar Board Class 10 Science Objective Questions

Question: What is the SI unit of force?

Answer: Newton.

Question: Which gas is released during photosynthesis?

Answer: Oxygen.

Question: What is the chemical formula of water?

Answer: H₂O.

Question: What is the main component of biogas?

Answer: Methane.

Question: Which planet is known as the Red Planet?

Answer: Mars.

Question: What is the boiling point of water in Celsius?

Answer: 100°C.

Question: Which acid is found in vinegar?

Answer: Acetic acid.

Question: What is the pH value of neutral substances?

Answer: 7.

Question: What is the process of converting sugar into alcohol called?

Answer: Fermentation.

Question: What is the smallest unit of life?

Answer: Cell.

Question: What is the speed of light in a vacuum?

Answer: 3 × 10⁸ m/s.

Question: Name the scientist who discovered the law of gravity.

Answer: Isaac Newton.

Question: Which organ in the human body filters blood?

Answer: Kidney.

Question: What is the symbol of Sodium in the periodic table?

Answer: Na.

Question: Which organelle is known as the powerhouse of the cell?

Answer: Mitochondria.

Question: What is the primary source of energy for the Earth?

Answer: Sun.

Question: What is the formula for calculating density?

Answer: Density = Mass / Volume.

Question: What is the chemical formula of Carbon Dioxide?

Answer: CO₂.

Question: What is the unit of electric current?

Answer: Ampere.

Question: What is the major greenhouse gas responsible for global warming?

Answer: Carbon dioxide.

Question: Which metal is the best conductor of electricity?

Answer: Silver.

Question: What is the functional unit of the kidney?

Answer: Nephron.

Question: What is the main constituent of LPG?

Answer: Propane and butane.

Question: What is the atomic number of Hydrogen?

Answer: 1.

Question: What is the full form of DNA?

Answer: Deoxyribonucleic Acid.

Question: Name the gas used in the process of welding.

Answer: Acetylene.

Question: What is the process of water changing to vapor called?

Answer: Evaporation.

Question: What is the name of the largest planet in our solar system?

Answer: Jupiter.

Question: Which type of mirror is used in vehicles to see rear images?

Answer: Convex mirror.

Question: What is the chemical symbol for Gold?

Answer: Au.

Question: Name the disease caused by the deficiency of Vitamin D.

Answer: Rickets.

Question: Which instrument is used to measure temperature?

Answer: Thermometer.

Question: What is the process by which plants lose water?

Answer: Transpiration.

Question: Which type of lens is used to correct myopia?

Answer: Concave lens.

Question: What is the formula of methane?

Answer: CH₄.

Question: Name the acid present in lemon.

Answer: Citric acid.

Question: What is the main constituent of hemoglobin?

Answer: Iron.

Question: Which part of the plant conducts photosynthesis?

Answer: Leaves.

Question: What is the measure of the heat energy of an object?

Answer: Temperature.

Question: Which device is used to convert chemical energy into electrical energy?

Answer: Battery.

Question: What is the common name of sodium bicarbonate?

Answer: Baking soda.

Question: Name the hardest substance found in nature.

Answer: Diamond.

Question: Which type of bond is formed by sharing of electrons?

Answer: Covalent bond.

Question: What is the term for a substance made of only one type of atom?

Answer: Element.

Question: What is the main source of energy in a food chain?

Answer: Sunlight.

Question: What is the phenomenon of splitting white light into seven colors called?

Answer: Dispersion.

These objective questions cover essential topics from the Bihar Board Class 10 Science syllabus. Practicing these questions will help students improve their conceptual understanding and accuracy for exams.

Bihar Board Class 10 science questions help students grasp concepts and secure good marks in exams. By practicing the objective questions provided above, students can strengthen their fundamentals and perform better. Regular practice of these questions ensures clarity in the subject.