Engage young minds with our exciting and educational Science Quiz for Class 4! Discover a world of fascinating facts and scientific wonders, tailored to suit young learners. Foster curiosity and learning with our interactive quiz. Get ready for a fun-filled journey through the wonders of science!
Science Quiz For Class 4
1. What tissue connects muscles to bones?
a. Skin
b. Blood vessels
c. Fat
d. Tendon
Answer: Tendon
2. Which nutrient plays an essential role in muscle-building?
a. Protein
b. Carbohydrate
c. Iron
d. Fat
Answer: Protein
3. Plants need which gas to perform photosynthesis?
a. Hydrogen
b. Carbon monoxide
c. Carbon dioxide
d. Oxygen
Answer: Carbon dioxide
4. Which scientist proposed the three laws of motion?
a. Isaac Newton
b. Thomas Alva Edison
c. Albert Einstein
d. Stephen Hawking
Answer: Isaac Newton
5. Earth is surrounded by layers of gasses collectively called the ___.
a. Hydrosphere
b. Stratosphere
c. Atmosphere
d. Ozone layer
Answer: Atmosphere
6. Which system of the body controls the senses?
a. Circulatory system
b. Digestive system
c. Nervous system
d. Skeletal system
Answer: Nervous system
7. Which is the largest animal on earth?
a. Shark
b. Elephant
c. Blue whale
d. Giraffe
Answer: Blue whale
8. Similar body cells group together to form a _.
a. Organ
b. Tissue
c. Blood vessels
d. Joints
Answer: Tissue
9. What energy emerges from motion?
a. Potential energy
b. Electrical energy
c. Kinetic energy
d. Gravitational energy
Answer: Kinetic energy
10. Which is the strongest sense in a dog?
a. Touch
b. Hearing
c. Smell
d. Taste
Answer: Smell
11. The standard unit of measurement for energy is __.
a. Newton
b. Ampere
c. Watt
d. Joule
Answer: Joule
12. Which biologist proposed the theory of evolution through natural selection?
a. Charles Darwin
b. Stephen Hawking
c. Francesco Redi
d. Alexander Fleming
Answer: Charles Darwin
13. What are animals, which eat both plants and animals, called?
a. Herbivores
b. Insectivores
c. Carnivores
d. Omnivores
Answer: Omnivores
14. The outward force, away from the center, felt by an object in circular motion is _.
a. Centripetal force
b. Circular force
c. Centrifugal forces
d. Elastic force
Answer: Centrifugal force
15. What type of energy eventually depletes?
a. Kinetic energy
b. Non-renewable energy
c. Gravitational energy
d. Renewable energy
Answer: Non-renewable energy
16. A single piece of coiled DNA is called __.
a. Nucleus
b. Ribosome
c. Cytoplasm
d. Chromosome
Answer: Chromosome
17. Yeast is a type of __.
a. Plant
b. Animal
c. Bacterium
d. Fungus
Answer: Fungus
18. Which is the closest planet to the sun?
a. Venus
b. Mars
c. Mercury
d. Earth
Answer: Mercury
19. Which one of the following waves are used by the common TV remote control?
a. Radio waves
b. Lasers
c. Infrared waves
d. Ultrasonic waves
Answer: Infrared waves
20. Which gas is safe and an effective extinguisher for all confined fires?
a. Nitrogen dioxide
b. Carbon dioxide
c. Sulphur dioxide
d. Nitrous Oxide
Answer: Carbon dioxide
21. Which one of the following elements the drum of a Photostat machine is made up of:
a. Aluminium
b. Selenium
c. Barium
d. Caesium
Answer: Selenium
22. If we say the child has an IQ of 100, what does this mean?
a. The performance of the child is below average.
b. The performance of the child is above average.
c. The mental age of the child is equal to his actual age.
d. The performance of the child cannot be better.
Answer: The mental age of the child is equal to his actual age.
23. Which bacteria are responsible for the formation of curd?
a. Lactic acid bacteria
b. Lactobacillus Acidophillus
c. Lactobacillus aureus
d. Bacillus radicicola
Answer: Lactobacillus Acidophillus
24. In poorly ventilated buildings which one of the following inert gases can be accumulated?
a. Helium
b. Neon
c. Argon
d. Radon
Answer: Radon
25. Honey is sweeter than cane sugar or corn syrup. Which one of the following carbon sugars is responsible for this?
a. Dextrose
b. Levulose
c. Sucrose
d. Fructose
Answer: Levulose
26.Which of the following is an example of a renewable energy source?
a. Natural gas
b. Coal
c. Solar power
d. Nuclear power
Answer: Solar power
27.What is the boiling point of water at sea level?
a. 0 degrees Celsius
b. 100 degrees Celsius
c. 212 degrees Fahrenheit
d. 273 Kelvin
Answer: 100 degrees Celsius
28.Which of the following is NOT a component of air?
a. Oxygen
b. Nitrogen
c. Carbon dioxide
d. Chlorine
Answer: Chlorine
29. Which of the following process is used to do maximum work done on the ideal gas if the gas is compressed to half of its initial volume?
a. Isothermal
b. Isochoric
c. Isobaric
d. Adiabatic
Answer: Adiabatic
Science Quiz For Class 4
30.What will be the work done by 3 moles of an ideal gas when it expands spontaneously in vacuum?
a. Zero
b. Infinite
c. 3 joules
d. 9 joules
Answer: Zero
31.What is the anti-particle of electrons?
a. Positron
b. Proton
c. Alpha-Particle
d. Beta-Patakal
Answer: Positron
32.Who is the discoverer of hydrogen?
a. Priestley
b. Cavendish
c. Ure
d.Levizer
Answer: Cavendish
33.What is the constant of proportionality of an oscillator if the damping force is directly proportional to the velocity
a. Kg.s-1
b. Kg.m.s-1
c. Kg.s
d. Kg.m.s-2
Answer: Kg.s-1
34.What does an electric dipole experience when it is kept in the non-uniform electric field?
a. Only a force
b. Only torque
c. Force and torque both
d. Neither force nor torque
Answer: Force and torque both
35.Find the molecular mass of a gas that takes three times more time to effuse as compared to He with the same volume
a. 9 u
b. 64 u
c. 27 u
d. 36 u
Answer: 36 u
36.What percentage of body weight of an adult human is contributed by muscles?
a. 20-30%
b. 10-20%
c. 40-50%
d. 30-40%
Answer: 40-50%
37.Nails consist of modified ____ cells
a. Epithelial
b. Epidermal
c. Hypodermal
d. Dermal
Answer: Epidermal
38.There are approximately how many muscles in Human body?
a. 206
b. 320
c. 554
d. 650
Answer: 650
39.What are the basic units from which human spare parts can be created?
a. Nerve cells
b. Stem cells
c. Heart cells
d. Kidney cells
Answer: Stem cells
40.The most commonly found green house gas in the world is: –
a. carbon dioxide
b. Water vapor
c. Sulfur Dioxide
d. ozone
Answer: Water vapor
41.Which of the following is not a traditional source of energy?
a. Natural Gas
b. Mineral Oil
c. Geothermal energy
d. Coal
Answer: Geothermal energy
42.Which of these diseases is also known as ‘encephalitis’?
a. Japanese encephalitis
b. Tetanus
c. Dengue
d. Rabies
Answer: Japanese encephalitis
43.Which of the following is ‘V.A.M.’ (VAM) is fungus?
a. Glomus species
b. Fusarium species
c. Rhizoctonia species
d. Pythium species
Answer: Glomus species
44.The main ingredient of ‘Bio Gas’ is?
a. Ethane
b. Ammonia
c. Methane
d. Ethylene
Answer: Methane
45.Sulfur is used?
a. Dynamite
b. Gunpowder
c. Ammo
d. All of the above
Answer: All of the above
46.Can the difference between cotton and woolly fibers be found?
a. Touching
b. Torches
c. Reacting with NaOH
d. Taking action with H.S.O.
Answer: Torches
47.Was Insuline Discovered?
a. Bentig
b. Domake
c. Ronald Ross
d. Harvey
Answer: Bentig
48.Which one of the following is not an ape?
a. Gorilla
b. Gibbon
c. Langur
d. None of these
Answer: Langur
49.Name the vitamin which is not found in any non-vegetarian food?
a. Vitamin B12
b. Vitamin C
c. Vitamin D
d. Vitamin K
Answer: Vitamin D
50.Which of the following is LPG? What is the main component of?
a. Methane
b. Butane
c. Propane
d. Ethane
Answer: Propane
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