Class 8 Maths Half Yearly Question Paper 2019

Class 8 half-yearly exams are crucial for students, especially in mathematics. Here, we provide questions and answers for Class 8 Maths Half Yearly Question Paper 2019. Additionally, important questions from other subjects like Science, Social Studies, and English are included to aid in exam preparation.

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Class 8 Maths Half Yearly Question Paper 2019

Question 1: What is the value of 3x + 5 = 20?
Answer: x = 5

Question 2: Solve: 45 ÷ [9 + (6 – 4)]
Answer: 5

Question 3: Find the area of a rectangle with length 8 cm and breadth 5 cm.
Answer: 40 cm²

Question 4: Write the expanded form of 4560.
Answer: 4000 + 500 + 60

Question 5: Solve: (5² + 2³) × 3
Answer: 141

Question 6: Find the least common multiple (LCM) of 12 and 15.
Answer: 60

Question 7: If the perimeter of a square is 32 cm, find the side length.
Answer: 8 cm

Question 8: A triangle has sides 7 cm, 24 cm, and 25 cm. Is it a right triangle?
Answer: Yes

Question 9: Convert 0.75 into a fraction in its simplest form.
Answer: 3/4

Question 10: Simplify: 3x – 7 = 8.
Answer: x = 5

Question 11: Write the value of π up to two decimal places.
Answer: 3.14

Question 12: If a = 4 and b = 3, find the value of (a² + b²).
Answer: 25

Question 13: A shopkeeper sells a pen for ₹50, earning a profit of ₹10. Find the cost price.
Answer: ₹40

Question 14: Calculate the simple interest on ₹5000 for 2 years at 5% per annum.
Answer: ₹500

Question 15: Convert 75% into a decimal.
Answer: 0.75

Question 16: Find the volume of a cube with a side of 3 cm.
Answer: 27 cm³

Question 17: Solve: 2/3 + 5/6
Answer: 3/2 or 1.5

Question 18: Find the square root of 144.
Answer: 12

Question 19: Express 0.00045 in scientific notation.
Answer: 4.5 × 10⁻⁴

Question 20: The ratio of boys to girls in a class is 4:5. If there are 20 boys, find the number of girls.
Answer: 25

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Class 8 Science Half Yearly Question Paper 2019

Question 1: What is photosynthesis?
Answer: The process by which green plants make their food using sunlight, carbon dioxide, and water.

Question 2: Define atomic number.
Answer: The number of protons in an atom’s nucleus.

Question 3: State Newton’s first law of motion.
Answer: A body remains at rest or in uniform motion unless acted upon by an external force.

Question 4: What is the chemical formula for water?
Answer: H₂O

Question 5: Name the process of water changing into water vapor.
Answer: Evaporation

Question 6: What is the function of the heart?
Answer: It pumps blood throughout the body.

Question 7: What is the SI unit of force?
Answer: Newton (N)

Question 8: Define habitat.
Answer: The natural environment where an organism lives.

Question 9: What are acids and bases?
Answer: Acids release H⁺ ions in water; bases release OH⁻ ions.

Question 10: Name two examples of non-renewable resources.
Answer: Coal and petroleum

Question 11: What is chlorophyll?
Answer: The green pigment in plants that aids in photosynthesis.

Question 12: What is friction?
Answer: A force that opposes the motion of objects.

Question 13: Define adaptation.
Answer: A change in an organism that helps it survive in its environment.

Question 14: What is the boiling point of water in Celsius?
Answer: 100°C

Question 15: What are biodegradable substances?
Answer: Materials that can be decomposed by microorganisms.

Question 16: What is the main function of roots in plants?
Answer: To absorb water and nutrients from the soil.

Question 17: Name the gas used in photosynthesis.
Answer: Carbon dioxide

Question 18: What is the primary source of energy for Earth?
Answer: The Sun

Question 19: Define ecosystem.
Answer: A system comprising living and non-living components interacting in an environment.

Question 20: What is a reflex action?
Answer: An immediate and involuntary response to a stimulus.

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Class 8 Social Studies Half Yearly Question Paper 2019

Question 1: What is democracy?
Answer: A system of government by the people, for the people, and of the people.

Question 2: Who is the Father of the Indian Constitution?
Answer: Dr. B.R. Ambedkar

Question 3: What is the Tropic of Cancer?
Answer: The latitude at 23.5°N.

Question 4: Define monarchy.
Answer: A form of government where a king or queen rules.

Question 5: What is a continent?
Answer: A large landmass on Earth.

Question 6: Name the longest river in the world.
Answer: The Nile

Question 7: What is urbanization?
Answer: The process of increasing urban areas due to population growth.

Question 8: Define federalism.
Answer: A system of government where power is divided between central and state authorities.

Question 9: What is globalization?
Answer: The interconnectedness of world economies and cultures.

Question 10: Name the three branches of government.
Answer: Executive, Legislative, and Judiciary

Question 11: What is the Prime Meridian?
Answer: The longitude at 0°.

Question 12: What is a constitution?
Answer: A set of fundamental principles governing a country.

Question 13: Who discovered America?
Answer: Christopher Columbus

Question 14: Define nationalism.
Answer: A sense of pride and loyalty towards one’s nation.

Question 15: What is a plateau?
Answer: A flat elevated landform.

Question 16: What is deforestation?
Answer: The clearing of forests for human activities.

Question 17: Name the coldest continent.
Answer: Antarctica

Question 18: Define GDP.
Answer: The total monetary value of all goods and services produced in a country.

Question 19: What is the significance of 15th August in India?
Answer: Independence Day

Question 20: What is a natural disaster?
Answer: A catastrophic event caused by natural forces like earthquakes or floods.

Class 8 half-yearly exams test students’ understanding of various subjects, preparing them for the final exams. This comprehensive question and answer guide helps students enhance their knowledge in mathematics, science, social studies, and English, making them confident for any exam type.