8th Annual Question Paper 2019 Questions and Answers

The 8th Annual Question Paper 2019 covers key concepts and subjects for students to enhance their understanding. These questions provide a foundation for academic success and exam preparation. The answers are designed to improve clarity and make learning effective. Each subject is presented with essential questions to promote learning and confidence.

---

Mathematics

Question: What is the value of 15 × 4 ÷ 3?
Answer: The value is 20.

Question: Simplify: 3x + 5x.
Answer: The simplified result is 8x.

Question: If a triangle has sides of 3 cm, 4 cm, and 5 cm, find its perimeter.
Answer: The perimeter is 12 cm.

Question: Solve for x: 2x + 3 = 11.
Answer: x = 4.

Question: Convert 0.75 into a fraction.
Answer: 0.75 as a fraction is 3/4.

Question: What is the area of a rectangle with length 5 cm and width 3 cm?
Answer: The area is 15 cm².

Question: If the radius of a circle is 7 cm, find its circumference.
Answer: The circumference is 44 cm.

Question: What is the square root of 81?
Answer: The square root is 9.

Question: Solve: 4² + 6².
Answer: The result is 52.

Question: What is the cube of 3?
Answer: The cube of 3 is 27.

Question: If 20% of a number is 40, find the number.
Answer: The number is 200.

Question: Simplify: (2x + 3)².
Answer: The simplified form is 4x² + 12x + 9.

Question: Find the average of 10, 20, and 30.
Answer: The average is 20.

Question: What is 12 divided by 0.5?
Answer: The result is 24.

Question: Solve for y: y/5 = 7.
Answer: y = 35.

Question: Find the LCM of 4 and 6.
Answer: The LCM is 12.

Question: What is the remainder when 25 is divided by 4?
Answer: The remainder is 1.

Question: If a = 3 and b = 4, find a² + b².
Answer: The result is 25.

Question: What is the volume of a cube with side 3 cm?
Answer: The volume is 27 cm³.

Question: Simplify: 2/3 + 3/4.
Answer: The result is 17/12.

---

Science

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

Question: Name the process by which plants make their food.
Answer: The process is photosynthesis.

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

Question: What is the chemical symbol for gold?
Answer: The symbol is Au.

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

Question: What are the three states of matter?Answer: The states are solid, liquid, and gas.

Question: What is the main gas in the Earth’s atmosphere?
Answer: The main gas is nitrogen.

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

Question: What is the formula for speed?
Answer: The formula is speed = distance/time.

Question: Name the organ that pumps blood in humans.
Answer: The organ is the heart.

Question: What is the function of chlorophyll in plants?
Answer: It helps in photosynthesis by absorbing sunlight.

Question: What is the hardest natural substance on Earth?
Answer: The hardest substance is diamond.

Question: Name the part of the plant that absorbs water.
Answer: The part is the root.

Question: What type of energy does the sun provide?
Answer: The sun provides solar energy.

Question: What is the function of the lungs in humans?
Answer: The lungs help in breathing and exchanging gases.

Question: Name the organ where digestion begins in humans.
Answer: Digestion begins in the mouth.

Question: What is the role of the ozone layer?
Answer: It protects Earth from harmful UV rays.

Question: What is the process of converting a solid to a gas called?
Answer: The process is sublimation.

Question: What is the main source of energy for life on Earth?
Answer: The main source is the sun.

Question: What is the chemical formula for carbon dioxide?
Answer: The formula is CO₂.

---

Social Studies

Question: Who is known as the Father of the Nation in India?
Answer: Mahatma Gandhi.

Question: What is the capital of India?
Answer: The capital is New Delhi.

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

Question: When did India gain independence?
Answer: India gained independence on August 15, 1947.

Question: What is the largest desert in the world?
Answer: The largest desert is the Sahara.

Question: Who was the first President of India?
Answer: The first President was Dr. Rajendra Prasad.

Question: What is the highest mountain in the world?
Answer: The highest mountain is Mount Everest.

Question: Name the three levels of government in India.
Answer: The levels are central, state, and local.

Question: What is the main religion in India?
Answer: The main religion is Hinduism.

Question: What is the national animal of India?
Answer: The national animal is the Bengal tiger.

Question: Name the primary occupation of ancient civilizations.
Answer: The primary occupation was agriculture.

Question: What is the importance of the Indian Constitution?
Answer: It is the supreme law of the land.

Question: Name the sea to the west of India.
Answer: The sea is the Arabian Sea.

Question: What is the role of the United Nations?
Answer: Its role is to maintain international peace and security.

Question: What is the currency of India?
Answer: The currency is the Indian Rupee.

Question: What is the name of the Indian national flag?
Answer: The name is the Tricolor.

Question: What is the primary source of income for the government?
Answer: The primary source is taxes.

Question: What is the main cause of air pollution?
Answer: The main cause is vehicle emissions.

Question: Who wrote the Indian national anthem?
Answer: Rabindranath Tagore.

Question: What is the role of the Parliament in India?
Answer: Its role is to make and pass laws.

---

These questions and answers are designed to help students prepare for the 8th Annual Question Paper 2019. Covering mathematics, science, and social studies, this guide offers clarity and detailed solutions. Focus on understanding the concepts for better exam readiness. Stay confident and keep learning!