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Scientists & Discoveries — Homi Bhabha Class 6 General Knowledge MCQs with Solutions
Free Homi Bhabha Class 6 General Knowledge Scientists & Discoveries MCQs with step-by-step solutions covering Famous Scientists, Indian Discoveries & Scientific Awards. Practise online on Prepizo — no login needed.
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Sample questions with solutions
Q1 — Famous Scientists · easy · theory
Which scientist is famous for the idea of gravity, said to have come to him when he saw an apple fall from a tree?
A. Galileo Galilei
B. Charles Darwin
C. Thomas Edison
D. Isaac Newton ✓ Correct
Solution: Isaac Newton described how gravity pulls objects down, like an apple falling to the ground.
Q2 — Famous Scientists · easy · theory
Who invented the first practical electric light bulb?
A. Marie Curie
B. Albert Einstein
C. Isaac Newton
D. Thomas Edison ✓ Correct
Solution: Thomas Edison made the first long-lasting, practical electric light bulb.
Q3 — Famous Scientists · easy · theory
Which scientist gave the famous theory of relativity and the equation E = mc²?
A. Albert Einstein ✓ Correct
B. Isaac Newton
C. Michael Faraday
D. Galileo Galilei
Solution: Albert Einstein gave the theory of relativity and the well-known equation E = mc².
Q4 — Famous Scientists · easy · theory
Who invented the telephone, a machine that lets people talk to each other from far away?
A. Thomas Edison
B. Nikola Tesla
C. Guglielmo Marconi
D. Alexander Graham Bell ✓ Correct
Solution: Alexander Graham Bell invented the telephone; Marconi is remembered for the radio.
Q5 — Famous Scientists · easy · theory
Which scientist is famous for the theory of evolution by natural selection?
A. Isaac Newton
B. Gregor Mendel
C. Louis Pasteur
D. Charles Darwin ✓ Correct
Solution: Charles Darwin explained how living things change over long periods of time through natural selection.
Q6 — Famous Scientists · easy · theory
Who discovered penicillin, the first antibiotic medicine, which came from a mould?
A. Alexander Fleming ✓ Correct
B. Louis Pasteur
C. Edward Jenner
D. Robert Koch
Solution: Alexander Fleming discovered penicillin, which is used to fight germs that cause illness.
Q7 — Famous Scientists · easy · theory
Marie Curie is famous for her scientific work on which of these?
A. Evolution
B. Radioactivity ✓ Correct
C. Gravity
D. Electricity
Solution: Marie Curie studied radioactivity and won two Nobel Prizes for her discoveries.
Q8 — Famous Scientists · easy · theory
Which scientist improved the telescope and used it to discover the moons of the planet Jupiter?
A. Isaac Newton
B. Johannes Kepler
C. Nicolaus Copernicus
D. Galileo Galilei ✓ Correct
Solution: Galileo Galilei used his improved telescope to study the sky and found four moons of Jupiter.
Q9 — Indian Discoveries & Scientific Awards · easy · theory
Which Indian scientist won the Nobel Prize in Physics for his work on the scattering of light, known as the "Raman Effect"?
A. Homi Bhabha
B. Vikram Sarabhai
C. A.P.J. Abdul Kalam
D. C. V. Raman ✓ Correct
Solution: C. V. Raman discovered how light scatters when it passes through liquids, called the Raman Effect.
Q10 — Indian Discoveries & Scientific Awards · easy · theory
What is the name of the highest civilian award of India?
A. Ashoka Chakra
B. Padma Shri
C. Nobel Prize
D. Bharat Ratna ✓ Correct
Solution: The Bharat Ratna is the highest civilian award given in India.
Q11 — Indian Discoveries & Scientific Awards · easy · theory
Dr. A.P.J. Abdul Kalam, who also became President of India, is called the "Missile Man of India" because he worked on
A. Bridges
B. Medicines
C. Computers
D. Missiles and rockets ✓ Correct
Solution: A.P.J. Abdul Kalam helped develop India’s missiles and rockets, earning him the name "Missile Man".
Q12 — Indian Discoveries & Scientific Awards · easy · theory
Which Indian organisation builds and launches India’s rockets and satellites?
A. NASA
B. ISRO ✓ Correct
C. DRDO
D. BARC
Solution: ISRO (Indian Space Research Organisation) launches India’s rockets and satellites.
Q13 — Indian Discoveries & Scientific Awards · easy · theory
Dr. Homi Bhabha is called the "Father of India’s ___ Programme".
A. Nuclear ✓ Correct
B. Green Revolution
C. Space
D. Railway
Solution: Homi Bhabha is known as the father of India’s nuclear (atomic energy) programme.
Q14 — Indian Discoveries & Scientific Awards · easy · theory
Dr. Vikram Sarabhai is called the "Father of India’s ___ Programme".
A. Space ✓ Correct
B. Computer
C. Nuclear
D. Medical
Solution: Vikram Sarabhai is known as the father of India’s space programme and helped start ISRO.
Q15 — Indian Discoveries & Scientific Awards · easy · theory
The Indian scientist Jagadish Chandra Bose is famous for showing with experiments that plants can
A. Walk from place to place
B. Turn into animals
C. Feel and respond to touch and light ✓ Correct
D. Talk like humans
Solution: J. C. Bose showed that plants respond to things like touch and light, just as living beings do.
Q16 — Indian Discoveries & Scientific Awards · easy · theory
Srinivasa Ramanujan, one of India’s greatest geniuses, was a famous
A. Mathematician ✓ Correct
B. Chemist
C. Astronaut
D. Doctor
Solution: Srinivasa Ramanujan was a brilliant Indian mathematician known for amazing work with numbers.
Q17 — Famous Scientists · hard · theory
Which scientist first suggested that the Sun, and not the Earth, is at the centre of the solar system?
A. Nicolaus Copernicus ✓ Correct
B. Aristotle
C. Ptolemy
D. Galileo Galilei
Solution: Nicolaus Copernicus proposed that the planets, including Earth, move around the Sun.
Q18 — Famous Scientists · hard · theory
Which scientist noticed that a compass needle moves when an electric current flows nearby, showing electricity and magnetism are linked?
A. Charles Darwin
B. James Watt
C. Robert Hooke
D. Hans Christian Oersted ✓ Correct
Solution: Hans Christian Oersted saw a compass needle turn near a wire carrying current, linking electricity and magnetism.
Q19 — Famous Scientists · hard · theory
Robert Hooke was the first to use the word "cell" for the tiny box-like spaces he saw through a microscope in a thin slice of
A. Cork ✓ Correct
B. Blood
C. Leaves
D. Water
Solution: Looking at cork under a microscope, Robert Hooke saw tiny compartments and named them "cells".
Q20 — Famous Scientists · hard · theory
James Watt is remembered for greatly improving which machine that helped power the Industrial Revolution?
A. The telephone
B. The light bulb
C. The steam engine ✓ Correct
D. The printing press
Solution: James Watt improved the steam engine, making it far more useful; the unit "watt" is named after him.
Q21 — Indian Discoveries & Scientific Awards · hard · theory
Subrahmanyan Chandrasekhar, an Indian-born scientist, won the Nobel Prize in Physics for his study of
A. Stars ✓ Correct
B. Rivers
C. Insects
D. Volcanoes
Solution: Chandrasekhar studied how stars live and change, and won the Nobel Prize for this work.
Q22 — Indian Discoveries & Scientific Awards · hard · theory
Venkatraman Ramakrishnan, a scientist of Indian origin, won the Nobel Prize in which subject for studying the ribosome?
A. Chemistry ✓ Correct
B. Peace
C. Physics
D. Literature
Solution: Venkatraman Ramakrishnan won the Nobel Prize in Chemistry for his work on the ribosome inside cells.
Q23 — Indian Discoveries & Scientific Awards · hard · theory
In which subject did C. V. Raman win his Nobel Prize in the year 1930?
A. Physics ✓ Correct
B. Chemistry
C. Medicine
D. Peace
Solution: C. V. Raman won the 1930 Nobel Prize in Physics for the Raman Effect.
Q24 — Indian Discoveries & Scientific Awards · hard · theory
The "Padma Vibhushan" is the second-highest civilian award of India. Which award ranks above it as the highest?
A. Param Vir Chakra
B. Bharat Ratna ✓ Correct
C. Nobel Prize
D. Arjuna Award
Solution: The Bharat Ratna is the highest civilian award; the Padma Vibhushan comes next.
Q25 — Famous Scientists · medium · theory
The ancient scientist who is said to have shouted "Eureka!" after discovering the principle of floating (buoyancy) was
A. Isaac Newton
B. Pythagoras
C. Aristotle
D. Archimedes ✓ Correct
Solution: Archimedes discovered how objects float and displace water, and is said to have cried "Eureka!"
Q26 — Famous Scientists · medium · theory
Michael Faraday is best known for his important discoveries in which area of science?
A. Electricity and magnetism ✓ Correct
B. The human body
C. The stars
D. The chemistry of food
Solution: Michael Faraday studied electricity and magnetism, and his work helped lead to electric motors.
Q27 — Famous Scientists · medium · theory
Louis Pasteur invented a way to kill harmful germs in milk by gently heating it. This process is called
A. Filtration
B. Fermentation
C. Distillation
D. Pasteurisation ✓ Correct
Solution: Heating a liquid to kill germs is called pasteurisation, named after Louis Pasteur.
Q28 — Famous Scientists · medium · theory
Which two brothers built and flew the first successful powered aeroplane?
A. The Marconi Brothers
B. The Wright Brothers ✓ Correct
C. The Curie Brothers
D. The Montgolfier Brothers
Solution: The Wright Brothers, Orville and Wilbur, made the first successful powered aeroplane flight.
Q29 — Famous Scientists · medium · theory
Who invented the first practical electric battery, which could store and give a steady flow of electricity?
A. Michael Faraday
B. Thomas Edison
C. Benjamin Franklin
D. Alessandro Volta ✓ Correct
Solution: Alessandro Volta made the first battery; the unit "volt" is named after him.
Q30 — Famous Scientists · medium · theory
Gregor Mendel is called the "Father of Genetics" because of his careful experiments with which plant?
A. Rose bushes
B. Pea plants ✓ Correct
C. Fruit flies
D. Mice
Solution: Gregor Mendel studied how features pass from parents to offspring using pea plants.