IGKO Class 5 - Sample question paper 09
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Q151) What is the phenomenon where light waves get bent as they pass from one medium to another?
a) Reflection
b) Refraction
c) Dispersion
d) Diffraction
Answer: b) Refraction
Explanation: Refraction is the phenomenon where light waves change direction and speed as they pass from one medium to another, causing them to bend. It's responsible for phenomena like the bending of light in a glass of water.
Q152) Who is credited with the discovery of penicillin, the first antibiotic?
a) Albert Einstein
b) Isaac Newton
c) Marie Curie
d) Alexander Fleming
Answer: d) Alexander Fleming
Explanation: Alexander Fleming is credited with the discovery of penicillin, the first antibiotic. His accidental observation of the mold Penicillium notatum led to the development of this groundbreaking medicine.
Q153) What did Galileo Galilei discover about the moons of Jupiter?
a) They are made of cheese
b) They have rings
c) They orbit other planets
d) They orbit Jupiter
Answer: d) They orbit Jupiter
Explanation: Galileo Galilei discovered that the moons of Jupiter orbit the planet, not Earth. This observation provided evidence against the geocentric model of the universe and supported the heliocentric model.
Q154) What is the process by which plants make their own food using sunlight?
a) Respiration
b) Photosynthesis
c) Fermentation
d) Combustion
Answer: b) Photosynthesis
Explanation: Photosynthesis is the process by which plants convert sunlight, carbon dioxide, and water into glucose and oxygen. It's a vital process that sustains plant life and produces oxygen that is essential for other organisms.
Q155) Which invention is attributed to Johannes Gutenberg in the 15th century?
a) Telescope
b) Printing Press
c) Steam Engine
d) Telephone
Answer: b) Printing Press
Explanation: Johannes Gutenberg is credited with inventing the movable-type printing press in the 15th century. This invention revolutionized the spread of information and played a key role in the Renaissance and the Reformation.
Q156) Who is credited with inventing the telephone?
a) Alexander Graham Bell
b) Thomas Edison
c) Nikola Tesla
d) Isaac Newton
Answer: a) Alexander Graham Bell
Explanation: Alexander Graham Bell is credited with inventing the telephone, which revolutionized communication by allowing voice transmission over long distances.
Q157) What invention is Thomas Edison most famously known for?
a) Airplane
b) Light bulb
c) Steam engine
d) Radio
Answer: b) Light bulb
Explanation: Thomas Edison is most famously known for inventing the incandescent light bulb, a significant advancement in lighting technology.
Q158) Which scientist is known for his work on the theory of relativity and the equation E=mc^2?
a) Albert Einstein
b) Isaac Newton
c) Galileo Galilei
d) Nikola Tesla
Answer: a) Albert Einstein
Explanation: Albert Einstein is known for his work on the theory of relativity and the equation E=mc^2, which relates energy (E) and mass (m) in the context of special relativity.
Q159) Who is credited with inventing the World Wide Web (WWW)?
a) Tim Berners-Lee
b) Steve Jobs
c) Mark Zuckerberg
d) Bill Gates
Answer: a) Tim Berners-Lee
Explanation: Tim Berners-Lee is credited with inventing the World Wide Web (WWW), a system that allows information to be shared and accessed over the internet.
Q160) What invention did the Wright brothers famously pioneer?
a) Telecommunication
b) Steam engine
c) Airplane
d) Telephone
Answer: c) Airplane
Explanation: The Wright brothers, Orville and Wilbur Wright, famously pioneered the invention of the airplane, achieving the first controlled, powered, and sustained flight.
Q161) He was known for his intelligence and valour, and his kingdom stretched from Macedonia to Egypt and Greece to modern India. Can you guess the king?
Answer: Alexander the Great
Explanation: Alexander the Great's vast kingdom extended from Macedonia to Egypt and Greece to modern India.
Q162) The Great Wall was constructed to defend against invasions from which group? Take a guess!
Answer: Mongols
Explanation: The Great Wall of China was built to protect against Mongol invasions.
Q163) He was the first President of the United States of America. Who could it be? Take a guess!
Answer: George Washington
Explanation: George Washington served as the first President of the United States.
Q164) The ancient city of Rome is located in which modern-day country? Can you make a guess?
Answer: Italy
Explanation: The ancient city of Rome is situated in the modern country of Italy.
Q165) He led a movement of nonviolent resistance against British colonial rule in India. Can you guess who this influential figure was?
Answer: Mahatma Gandhi
Explanation: Mahatma Gandhi used nonviolent methods to fight against British colonial rule in India.
Q166) This ancient wonder was a colossal statue of a mythical creature, guarding the harbor of Rhodes. Can you guess what it is?
Answer: Colossus of Rhodes
Explanation: The Colossus of Rhodes was a massive statue that stood at the entrance of the harbor in the city of Rhodes.
Q167) She was a famous French scientist and mathematician, known for her groundbreaking contributions. Take a guess at her name!
Answer: Marie Curie
Explanation: Marie Curie made significant discoveries in the field of radioactivity and was the first woman to win a Nobel Prize.
Q168) This ancient civilization flourished along the banks of the Nile River and built impressive structures like the pyramids. Can you guess which civilization it is?
Answer: Ancient Egypt
Explanation: The civilization of Ancient Egypt thrived along the Nile River and left behind remarkable monuments like the pyramids.
Q169) He was an Italian polymath known for his contributions to various fields like art, science, and anatomy. Can you guess his name?
Answer: Leonardo da Vinci
Explanation: Leonardo da Vinci was a versatile genius who excelled in art, science, mathematics, and many other disciplines.
Q170) This ancient city was the capital of the Inca Empire and is now a UNESCO World Heritage site. Can you guess its name?
Answer: Machu Picchu
Explanation: Machu Picchu was the capital city of the Inca Empire and is renowned for its stunning architecture and mountainous surroundings.
Q171) This famous landmark is an ancient temple complex located in Cambodia. Can you guess its name?
Answer: Angkor Wat
Explanation: Angkor Wat is a magnificent temple complex in Cambodia, known for its stunning architecture and historical significance.
Q172) He was a prominent leader of the Indian independence movement and played a key role in shaping India's destiny. Take a guess at his name!
Answer: Mahatma Gandhi
Explanation: Mahatma Gandhi was a revered figure who led India towards independence through nonviolent resistance and civil disobedience.
Q173) This ancient city was one of the largest and most advanced cities of its time, located in present-day Iraq. Can you guess its name?
Answer: Babylon
Explanation: Babylon was a significant city in ancient Mesopotamia, known for its impressive architecture, Hanging Gardens, and contributions to civilization.
Q174) This famous scientist formulated the laws of motion and universal gravitation, transforming our understanding of the natural world. Can you guess who this scientist is?
Answer: Isaac Newton
Explanation: Sir Isaac Newton made groundbreaking contributions to physics and mathematics, including his laws of motion and theory of gravitation.
Q175) This ancient trading route connected the East and West, facilitating cultural exchange and trade between different regions. Can you guess its name?
Answer: Silk Road
Explanation: The Silk Road was an extensive network of trade routes that connected Asia, the Middle East, and Europe, allowing the exchange of goods, ideas, and culture.