8 Question Paper 2019 – Questions & Answers

Exam preparation requires access to previous question papers and answers to improve understanding and practice effectively. Here, questions and answers from the 2019 examination are provided for all subjects, offering a complete resource for students. It helps in better preparation, building confidence, and achieving academic excellence.

Mathematics

Question: What is the formula to calculate the area of a circle?
Answer: The formula is A = πr², where r is the radius.

Question: Solve: 15 + 25 ÷ 5 × 2 – 3.
Answer: The answer is 22.

Question: Find the HCF of 36 and 48.
Answer: The HCF is 12.

Question: What is the value of √121?
Answer: The value is 11.

Question: Solve for x: 2x + 5 = 15.
Answer: x = 5.

Question: Convert 3/4 into a decimal.
Answer: The decimal form is 0.75.

Question: Simplify: (3² + 4²) ÷ 5.
Answer: The answer is 5.

Question: Write the quadratic formula.
Answer: The formula is x = (-b ± √(b² – 4ac)) / 2a.

Question: Calculate the perimeter of a rectangle with length 10 cm and width 5 cm.
Answer: The perimeter is 30 cm.

Question: What is the sum of angles in a triangle?
Answer: The sum is 180°.

Question: Find the value of sin 30°.
Answer: The value is 0.5.

Question: Simplify: 8 × (2 + 3).
Answer: The answer is 40.

Question: What is the cube of 4?
Answer: The cube is 64.

Question: Solve for y: 3y – 7 = 8.
Answer: y = 5.

Question: Write the expanded form of (a + b)².
Answer: The expanded form is a² + 2ab + b².

Question: What is the value of cos 0°?
Answer: The value is 1.

Question: Convert 45° into radians.
Answer: The radian value is π/4.

Question: Solve: 5x – 2 = 13.
Answer: x = 3.

Question: Write the formula for calculating the volume of a sphere.
Answer: The formula is V = 4/3 πr³.

Question: Find the LCM of 4, 6, and 8.
Answer: The LCM is 24.

Science

Question: What is photosynthesis?
Answer: Photosynthesis is the process by which green plants use sunlight to synthesize food from carbon dioxide and water.

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

Question: Name the gas essential for human respiration.
Answer: The gas is oxygen.

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

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

Question: What is Newton’s third law of motion?
Answer: For every action, there is an equal and opposite reaction.

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

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

Question: What is the speed of light?
Answer: The speed of light is approximately 3 × 10⁸ m/s.

Question: Define osmosis.
Answer: Osmosis is the movement of water molecules through a semi-permeable membrane from a low solute concentration to a high solute concentration.

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

Question: What is the SI unit of energy?
Answer: The SI unit is the joule (J).

Question: What is the pH range of a neutral substance?
Answer: The pH range is 7.

Question: Name the planet known as the Red Planet.
Answer: The planet is Mars.

Question: What is the function of chlorophyll?
Answer: Chlorophyll absorbs light for photosynthesis.

Question: Define biodiversity.
Answer: Biodiversity is the variety of life in an ecosystem or the entire Earth.

Question: What is the boiling point of water?
Answer: The boiling point is 100°C (at standard atmospheric pressure).

Question: Name one renewable source of energy.
Answer: Solar energy is a renewable source.

Question: What is the main component of natural gas?
Answer: The main component is methane.

Question: Define evaporation.
Answer: Evaporation is the process by which a liquid turns into a gas.

Social Science

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

Question: Who was the first Prime Minister of India?
Answer: The first Prime Minister was Jawaharlal Nehru.

Question: What is democracy?
Answer: Democracy is a system of government where citizens elect their representatives.

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

Question: What is the full form of GDP?
Answer: The full form is Gross Domestic Product.

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

Question: Define globalization.
Answer: Globalization is the process of interaction and integration among people, companies, and governments worldwide.

Question: What is the study of population called?
Answer: The study is called demography.

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

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

Question: What is the significance of the Indian National Flag?
Answer: The flag represents India’s independence, unity, and values.

Question: What is the main function of the judiciary?
Answer: The judiciary interprets and applies the law.

Question: Name the mountain range that includes Mount Everest.
Answer: The mountain range is the Himalayas.

Question: Define a republic.
Answer: A republic is a country where the head of state is elected and not a monarch.

Question: What is the main purpose of the United Nations?
Answer: The purpose is to promote peace and cooperation among nations.

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

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

Question: What is the smallest state in India by area?
Answer: The smallest state is Goa.

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

Question: Define secularism.
Answer: Secularism is the principle of separation between government institutions and religion.

English

Question: What is a synonym?
Answer: A synonym is a word with the same or similar meaning as another word.

Question: Define a noun.
Answer: A noun is a word that names a person, place, thing, or idea.

Question: What is the past tense of “go”?
Answer: The past tense is “went.”

Question: Define a verb.
Answer: A verb is a word that expresses an action, occurrence, or state of being.

Question: What is an adjective?
Answer: An adjective is a word that describes a noun or pronoun.

Question: Write a sentence using the word “beautiful.”
Answer: The garden looks beautiful in spring.

Question: What is the plural form of “child”?
Answer: The plural form is “children.”

Question: Define an adverb.
Answer: An adverb modifies a verb, an adjective, or another adverb.

Question: What is a preposition?
Answer: A preposition is a word that shows the relationship between a noun or pronoun and other words in a sentence.

Question: Write an example of a compound sentence.
Answer: I wanted to go to the park, but it started raining.

Question: What is a pronoun?
Answer: A pronoun is a word that replaces a noun.

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

Question: What is an antonym?
Answer: An antonym is a word with the opposite meaning of another word.

Question: Write an example of a simile.
Answer: She is as brave as a lion.

Question: What is the main idea of a paragraph?
Answer: The main idea is the central point or message of the paragraph.

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

Question: What is an interjection?
Answer: An interjection is a word that expresses emotion.

Question: What are homophones?
Answer: Homophones are words that sound the same but have different meanings and spellings.

Question: What is the subject of a sentence?
Answer: The subject is the part of the sentence that tells who or what the sentence is about.

Exam preparation is key to success, and these questions and answers provide comprehensive insights into various subjects. By practicing and understanding these, students can improve their knowledge and perform confidently in their exams.