9th standard question paper 2019

The 9th standard question paper for 2019 includes a variety of questions across subjects such as Mathematics, Science, Social Science, and English. The questions are designed to test the understanding and application of concepts learned throughout the year. Here are the questions and answers for each subject to help with preparation.

---

Mathematics

Question: What is the value of (2x + 3) when x = 4?

Answer: The value is 11.

Question: Simplify: 3x – 5x + 7.

Answer: The simplified expression is -2x + 7.

Question: Solve for x: 5x + 3 = 18.

Answer: x = 3.

Question: What is the formula for the area of a triangle?

Answer: Area = 1/2 × base × height.

Question: Calculate the circumference of a circle with radius 7 cm.

Answer: The circumference is 44 cm.

Question: If a = 2 and b = 3, find the value of a² + b².

Answer: The value is 13.

Question: What is the value of 7³?

Answer: The value is 343.

Question: Solve: (5x + 2)/2 = 6.

Answer: x = 2.

Question: Write the prime factors of 36.

Answer: The prime factors are 2 × 2 × 3 × 3.

Question: Find the LCM of 12 and 18.

Answer: The LCM is 36.

Question: What is the slope of the line y = 2x + 5?

Answer: The slope is 2.

Question: Convert 0.25 into a fraction.

Answer: 0.25 = 1/4.

Question: Solve: √81 + √16.

Answer: The value is 13.

Question: What is the value of sin 30°?

Answer: The value is 1/2.

Question: If the perimeter of a square is 40 cm, find its side length.

Answer: The side length is 10 cm.

Question: Evaluate: (2³ × 5²).

Answer: The value is 200.

Question: What is the sum of angles in a triangle?

Answer: The sum is 180°.

Question: Solve for x: 3x – 7 = 11.

Answer: x = 6.

Question: Find the area of a rectangle with length 8 cm and width 5 cm.

Answer: The area is 40 cm².

Question: Simplify: (x + 2)(x – 2).

Answer: The simplified expression is x² – 4.

---

Science

Question: What is the formula of water?

Answer: The formula is H₂O.

Question: Name the process of converting solid to gas directly.

Answer: The process is sublimation.

Question: Define photosynthesis.

Answer: Photosynthesis is the process by which plants prepare food using sunlight, carbon dioxide, and water.

Question: What is the SI unit of force?

Answer: The SI unit is Newton (N).

Question: State Newton’s third law of motion.

Answer: For every action, there is an equal and opposite reaction.

Question: What is the chemical symbol of sodium?

Answer: The symbol is Na.

Question: Name the organelle responsible for energy production in cells.

Answer: It is the mitochondria.

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

Answer: It is 100°C.

Question: What are non-metals?

Answer: Non-metals are elements that lack metallic properties, such as carbon and sulfur.

Question: Define an ecosystem.

Answer: An ecosystem is a community of living organisms interacting with their environment.

Question: Name the gas responsible for global warming.

Answer: It is carbon dioxide (CO₂).

Question: What is the basic unit of life?

Answer: The basic unit is the cell.

Question: What is a conductor?

Answer: A conductor allows electricity or heat to flow through it, such as copper.

Question: What is the process of water changing into vapor?

Answer: The process is evaporation.

Question: What is the main function of the heart?

Answer: The heart pumps blood throughout the body.

Question: What is the speed of light?

Answer: The speed is approximately 3 × 10⁸ m/s.

Question: What is the chemical formula of carbon dioxide?

Answer: The formula is CO₂.

Question: Define gravity.

Answer: Gravity is the force of attraction between two masses.

Question: Name the organ where digestion begins.

Answer: Digestion begins in the mouth.

Question: What is an acid?

Answer: An acid is a substance with a pH less than 7.

---

Social Science

Question: What is democracy?

Answer: Democracy is a form of government where people elect their representatives.

Question: Name the longest river in the world.

Answer: The Nile is the longest river.

Question: What is the capital of India?

Answer: The capital is New Delhi.

Question: Define globalization.

Answer: Globalization is the process of increasing interconnectedness of the world.

Question: What is the main function of the judiciary?

Answer: The judiciary interprets laws and ensures justice.

Question: Name the first President of India.

Answer: It was Dr. Rajendra Prasad.

Question: What is the main occupation of people in rural areas?

Answer: The main occupation is agriculture.

Question: Name one renewable resource.

Answer: Solar energy is a renewable resource.

Question: What is the full form of GDP?

Answer: Gross Domestic Product.

Question: Define secularism.

Answer: Secularism is the principle of separating religion from the state.

Question: What is the main function of the legislature?

Answer: The legislature makes laws.

Question: Name the largest continent.

Answer: Asia is the largest continent.

Question: What is the function of the United Nations?

Answer: It promotes peace and international cooperation.

Question: Define weather.

Answer: Weather is the day-to-day condition of the atmosphere.

Question: Name one major mountain range in India.

Answer: The Himalayas is a major mountain range.

Question: What is the significance of the Constitution?

Answer: It provides the framework for governance.

Question: What is urbanization?

Answer: Urbanization is the increase in population in urban areas.

Question: Name the leader of the Quit India Movement.

Answer: It was Mahatma Gandhi.

Question: What is a drought?

Answer: A drought is a prolonged period of low rainfall.

Question: Define biodiversity.

Answer: Biodiversity is the variety of life forms on Earth.

---

English

Question: Define a noun.

Answer: A noun is a word used to name a person, place, thing, or idea.

Question: What is a verb?

Answer: A verb is a word that describes an action or state.

Question: Give an example of a preposition.

Answer: Examples include in, on, and under.

Question: Write a synonym for happy.

Answer: A synonym is joyful.

Question: Write an antonym for fast.

Answer: An antonym is slow.

Question: What is a metaphor?

Answer: A metaphor is a figure of speech comparing two things without using “like” or “as.”

Question: Define a simile.

Answer: A simile compares two things using “like” or “as.”

Question: What is the plural of child?

Answer: The plural is children.

Question: Write an example of an adjective.

Answer: Beautiful is an example.

Question: What is a conjunction?

Answer: A conjunction connects words, phrases, or clauses.

Question: What is the past tense of go?

Answer: The past tense is went.

Question: Define a sentence.

Answer: A sentence is a group of words that expresses a complete thought.

Question: What is the opposite of day?

Answer: The opposite is night.

Question: Write a synonym for large.

Answer: A synonym is big.

Question: Write the meaning of the word “benevolent.”

Answer: Benevolent means kind or charitable.

Question: What is a pronoun?

Answer: A pronoun is a word that replaces a noun.

Question: Write an example of an adverb.

Answer: Quickly is an example.

Question: What is the meaning of “gratitude”?

Answer: Gratitude means thankfulness.

Question: Write a synonym for intelligent.

Answer: A synonym is smart.

Question: What is the plural of leaf?

Answer: The plural is leaves.

---

The 9th standard question paper for 2019 is a great resource for students to practice and review important concepts. It covers various types of questions that help improve understanding and preparation for exams. Regular practice ensures confidence and better performance.